miscellaneous test updates

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@4246 9d0c8265-081b-0410-96cb-a4ca84ce46f8

42 files changed, 508 insertions, 417 deletions

diff --git a/test/cut-cat-roundtrip.test b/test/cut-cat-roundtrip.test
index 970c3e17..f9928b30 100755
--- a/test/cut-cat-roundtrip.test
+++ b/test/cut-cat-roundtrip.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamcut
 # Also requires: pamfile pnmcat pnmpad pnmcrop
 
@@ -16,30 +16,30 @@ testimg_ppm_sum=`cat testimg.ppm | cksum`
 echo ${testimg_ppm_sum}
 
  imgsize=$(pamfile -size testimg.ppm)
- iw=$(echo ${imgsize} | cut -d" " -f1)
- ih=$(echo ${imgsize} | cut -d" " -f2)
+ width=$(echo ${imgsize} | cut -d " " -f 1)
+ height=$(echo ${imgsize} | cut -d " " -f 2)
 
 for i in 0 1 128 224 225
   do
   pamcut -left=$((i+1)) testimg.ppm > ${right_ppm}
   pamcut -right=$i      testimg.ppm > ${left_ppm}
   pnmcat -lr ${left_ppm} ${right_ppm} | \
-    pamcut -left=0 -width=${iw} | cksum
+    pamcut -left=0 -width=${width} | cksum
   rm ${left_ppm} ${right_ppm}
   done
 
 echo "Test 2.  Should print 3891261972 202953 1926073387 101484 six times"
 # Padding added to right.
 
-pnmpad -right=${iw} -black testimg.ppm | cksum | tr '\n' ' '
+pnmpad -right=${width} -black testimg.ppm | cksum | tr '\n' ' '
 echo ${testimg_ppm_sum}
 
 for border in 0 1 128 224 225
   do
-  pamcut -left=$((${border}+1)) -width=${iw} -pad testimg.ppm > ${right_ppm}
-  pamcut -right=${border} -width=${iw} -pad testimg.ppm > ${left_ppm}
+  pamcut -left=$((${border}+1)) -width=${width} -pad testimg.ppm > ${right_ppm}
+  pamcut -right=${border} -width=${width} -pad testimg.ppm > ${left_ppm}
   pnmcat -lr ${left_ppm} ${right_ppm} ${left_ppm} | \
-    pamcut -left=$((${iw}-${border}-1))  -width=$((${iw}*2)) | \
+    pamcut -left=$((${width}-${border}-1))  -width=$((${width}*2)) | \
     tee ${padded_ppm} | cksum | tr '\n' ' '
   pnmcrop -black -right ${padded_ppm} | cksum
   rm ${left_ppm} ${right_ppm} ${padded_ppm}
@@ -54,21 +54,22 @@ for border in 0 1 70 147
   pamcut -top=$((${border}+1)) testimg.ppm > ${bottom_ppm}
   pamcut -bottom=${border}     testimg.ppm > ${top_ppm}
   pnmcat -tb ${top_ppm} ${bottom_ppm} | \
-    pamcut -top=0 -height=${ih} | cksum
+    pamcut -top=0 -height=${height} | cksum
   rm ${top_ppm} ${bottom_ppm}
   done
 
 echo "Test 4.  Should print 26789469 202953 1926073387 101484 five times"
 # Padding added to bottom.
 
-pnmpad -bottom=${ih} -black testimg.ppm | cksum | tr '\n' ' '
+pnmpad -bottom=${height} -black testimg.ppm | cksum | tr '\n' ' '
 echo ${testimg_ppm_sum}
 for border in 0 1 70 147
   do
-  pamcut -top=$((${border}+1)) -height=${ih} -pad testimg.ppm > ${bottom_ppm}
-  pamcut -bottom=${border}     -height=${ih} -pad testimg.ppm > ${top_ppm}
+  pamcut -top=$((${border}+1)) -height=${height} -pad testimg.ppm \
+    > ${bottom_ppm}
+  pamcut -bottom=${border}     -height=${height} -pad testimg.ppm > ${top_ppm}
   pnmcat -tb ${top_ppm} ${bottom_ppm} ${top_ppm} | \
-    pamcut -top=$((${ih}-${border}-1))  -height=$((${ih}*2)) | \
+    pamcut -top=$((${height}-${border}-1))  -height=$((${height}*2)) | \
     tee ${padded_ppm} | cksum | tr '\n' ' 'cksum
   pnmcrop -black -bottom ${padded_ppm} | cksum
   rm ${top_ppm} ${bottom_ppm} ${padded_ppm}
@@ -86,15 +87,15 @@ maze_pbm_sum=`cat maze.pbm | cksum`
 echo ${maze_pbm_sum}
 
 imgsize=$(pamfile -size maze.pbm)
-iw=$(echo ${imgsize} | cut -d" " -f1)
-ih=$(echo ${imgsize} | cut -d" " -f2)
+width=$(echo ${imgsize} | cut -d " " -f 1)
+height=$(echo ${imgsize} | cut -d " " -f 2)
 
 for i in 0 1 10 30 50
   do
   pamcut -left=$((i+1)) maze.pbm > ${right_ppm}
   pamcut -right=$i      maze.pbm > ${left_ppm}
   pnmcat -lr ${left_ppm} ${right_ppm} | \
-    pamcut -left=0 -width=${iw} | cksum
+    pamcut -left=0 -width=${width} | cksum
   rm ${left_ppm} ${right_ppm}
   done
 
@@ -102,15 +103,15 @@ for i in 0 1 10 30 50
 echo "Test 6.  Should print 1748767123 895 281226646 481 six times"
 # Padding added to right.
 
-pnmpad -right=${iw} -black maze.pbm | cksum | tr '\n' ' '
+pnmpad -right=${width} -black maze.pbm | cksum | tr '\n' ' '
 echo ${maze_pbm_sum}
 
 for border in 0 1 10 30 50
   do
-  pamcut -left=$((${border}+1)) -width=${iw} -pad maze.pbm > ${right_ppm}
-  pamcut -right=${border} -width=${iw} -pad maze.pbm > ${left_ppm}
+  pamcut -left=$((${border}+1)) -width=${width} -pad maze.pbm > ${right_ppm}
+  pamcut -right=${border} -width=${width} -pad maze.pbm > ${left_ppm}
   pnmcat -lr ${left_ppm} ${right_ppm} ${left_ppm} | \
-    pamcut -left=$((${iw}-${border}-1))  -width=$((${iw}*2)) | \
+    pamcut -left=$((${width}-${border}-1))  -width=$((${width}*2)) | \
     tee ${padded_ppm} | cksum | tr '\n' ' '
   pnmcrop -black -right ${padded_ppm} | cksum
   rm ${left_ppm} ${right_ppm} ${padded_ppm}
@@ -125,21 +126,21 @@ for border in 0 1 12 21 31 44
   pamcut -top=$((${border}+1)) maze.pbm > ${bottom_ppm}
   pamcut -bottom=${border}     maze.pbm > ${top_ppm}
   pnmcat -tb ${top_ppm} ${bottom_ppm} | \
-    pamcut -top=0 -height=${ih} | cksum
+    pamcut -top=0 -height=${height} | cksum
   rm ${top_ppm} ${bottom_ppm}
   done
 
 echo "Test 8.  Should print 1346655680 954 281226646 481 five times"
 # Padding added to bottom.
 
-pnmpad -bottom=${ih} -black maze.pbm | cksum | tr '\n' ' '
+pnmpad -bottom=${height} -black maze.pbm | cksum | tr '\n' ' '
 echo ${maze_pbm_sum}
 for border in 0 1 10 50
   do
-  pamcut -top=$((${border}+1)) -height=${ih} -pad maze.pbm > ${bottom_ppm}
-  pamcut -bottom=${border}     -height=${ih} -pad maze.pbm > ${top_ppm}
+  pamcut -top=$((${border}+1)) -height=${height} -pad maze.pbm > ${bottom_ppm}
+  pamcut -bottom=${border}     -height=${height} -pad maze.pbm > ${top_ppm}
   pnmcat -tb ${top_ppm} ${bottom_ppm} ${top_ppm} | \
-    pamcut -top=$((${ih}-${border}-1))  -height=$((${ih}*2)) | \
+    pamcut -top=$((${height}-${border}-1))  -height=$((${height}*2)) | \
     tee ${padded_ppm} | cksum | tr '\n' ' 'cksum
   pnmcrop -black -bottom ${padded_ppm} | cksum
   rm ${top_ppm} ${bottom_ppm} ${padded_ppm}
diff --git a/test/g3-roundtrip.test b/test/g3-roundtrip.test
index f35c4935..2736c09a 100755
--- a/test/g3-roundtrip.test
+++ b/test/g3-roundtrip.test
@@ -11,7 +11,7 @@ pagemax_pbm=${tmpdir}/pagemax.pbm
 
 echo "Test 1.  Should print 0 0 0 : 0 or 0 0 0 0 : 0 total three times"
 
-width=$(pamfile -size maze.pbm | cut -d" " -f1)
+width=$(pamfile -size maze.pbm | cut -d " " -f 1) 
 
 pbmtog3 -nofixedwidth maze.pbm | \
 g3topbm -width=${width} | cmp -s - maze.pbm
diff --git a/test/pamarith-multiple-input.test b/test/pamarith-multiple-input.test
index 7df08817..b9c09662 100755
--- a/test/pamarith-multiple-input.test
+++ b/test/pamarith-multiple-input.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamarith
 # Also requires: pgmmake ppmpat pamfunc
 
@@ -14,7 +14,7 @@ pgmmake -maxval=99 0.01 16 11 > ${input1_pgm}
 
 add_command="pamarith -add "${input1_pgm}
 
-for ((i=1 ; i<10 ; i++ ))
+for i in 1 2 3 4 5 6 7 8 9 # for i in `seq 9`
   do
   echo ${i}":"
   add_command=${add_command}" "${input1_pgm}
@@ -58,4 +58,4 @@ for function in "-add" "-and" "-or" "-xor" "-nand" "-nor"
   pamarith ${function} ${g2_ppm} ${g3_ppm} ${g2_ppm} | cksum
   done
 
-rm ${g2_ppm} ${g3_ppm}
\ No newline at end of file
+rm ${g2_ppm} ${g3_ppm}
diff --git a/test/pamcut.test b/test/pamcut.test
index e18c3cf2..2299b4bc 100755
--- a/test/pamcut.test
+++ b/test/pamcut.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamcut pbmmake
 # Also requires: pamfile
 
@@ -27,8 +27,9 @@ pamcut -top 10 -left 10 -width 207 -height 129 testimg.ppm | cksum
 
 echo "Test 5. Should print 281226646 481 five times"
 
-width=$(pamfile -size maze.pbm | awk '{print $1}')
-height=$(pamfile -size maze.pbm | awk '{print $2}')
+mazesize=$(pamfile -size maze.pbm)
+width=$(echo ${mazesize} | cut -d " " -f 1)
+height=$(echo ${mazesize} | cut -d " " -f 2)
  
 pamcut -croptop 0 -cropleft 0 -cropbottom 0 -cropright 0 maze.pbm | \
   cksum
diff --git a/test/pamdice-roundtrip.test b/test/pamdice-roundtrip.test
index 741615f5..4d3fba19 100755
--- a/test/pamdice-roundtrip.test
+++ b/test/pamdice-roundtrip.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamdice pamundice
 # Also requires: pamfile
 
@@ -6,8 +6,8 @@ tmpdir=${tmpdir:-/tmp}
 fname_stem=${tmpdir}/pamdice_part
 
 mazesize=$(pamfile -size maze.pbm)
-mw=$(echo ${mazesize} | cut -d" " -f1)
-mh=$(echo ${mazesize} | cut -d" " -f2)
+mw=$(echo ${mazesize} | cut -d " " -f 1)
+mh=$(echo ${mazesize} | cut -d " " -f 2)
 
 echo "Test 1.  Should print 281226646 481"
 
diff --git a/test/pamendian-roundtrip.ok b/test/pamendian-roundtrip.ok
index 50450617..6245abb9 100644
--- a/test/pamendian-roundtrip.ok
+++ b/test/pamendian-roundtrip.ok
@@ -1,4 +1,5 @@
-Test 1: Should print '0 0 0 : 0'
+Test 1.  Should print '0 0 0 : 0'
 0 0 0 : 0
-Test 2 should print echo '0 0 0 0 0 : 0'
+Test 2.  Should print '0 0 0 0 0 : 0' twice
+0 0 0 0 0 : 0
 0 0 0 0 0 : 0
diff --git a/test/pamendian-roundtrip.test b/test/pamendian-roundtrip.test
index aed03c76..b060b704 100755
--- a/test/pamendian-roundtrip.test
+++ b/test/pamendian-roundtrip.test
@@ -2,7 +2,7 @@
 # This script tests: pamendian
 # Also requires: pamdepth pgmtopbm pamseq
 
-echo "Test 1: Should print '0 0 0 : 0'" 
+echo "Test 1.  Should print '0 0 0 : 0'" 
 
 tmpdir=${tmpdir:-/tmp}
 test0_pam=${tmpdir}/test0.pam
@@ -15,8 +15,12 @@ pamendian < ${test0_pam} | pamendian |\
 rm ${test0_pam}
 
 
-echo "Test 2 should print echo '0 0 0 0 0 : 0'" 
+echo "Test 2.  Should print '0 0 0 0 0 : 0' twice" 
 
 pamdepth 65535 testgrid.pbm | pamendian | pamendian | \
   pgmtopbm -th -val=0.5 | cmp -s - testgrid.pbm
+  echo ${PIPESTATUS[@]} ":" $?
+
+pamdepth 4095 maze.pbm | pamendian | pamendian | \
+  pgmtopbm -th -val=0.5 | cmp -s - maze.pbm
   echo ${PIPESTATUS[@]} ":" $?
\ No newline at end of file
diff --git a/test/pamenlarge-pbm.test b/test/pamenlarge-pbm.test
index 87493516..fbb2eced 100755
--- a/test/pamenlarge-pbm.test
+++ b/test/pamenlarge-pbm.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamenlarge
 # Also requires: pbmmake pnmpad
 
@@ -18,22 +18,24 @@ LC_ALL=C awk 'BEGIN { print "P4";         # header
 # Test 1.
 echo "test 1"
  
-for xs in `seq 23`
+for xs in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 # for xs in `seq 23`
   do
-  pamenlarge -xscale=$xs ${complete256_pbm} | cksum
+  pamenlarge -xscale=${xs} ${complete256_pbm} | cksum
   done
 
 # Test 2.
 echo "test 2"
 
-for xs1 in `seq 15`
+for xs1 in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15  # for xs in `seq 15`
   do
-  xs2=$((30-$xs1))
-  pamenlarge -xscale=$xs1 ${complete256_pbm} | pamenlarge -xscale=$xs2 | cksum
-  if [ $xs1 != $xs2 ]; then
-  pamenlarge -xscale=$xs2 ${complete256_pbm} | pamenlarge -xscale=$xs1 | cksum
+  xs2=$((30-${xs1}))
+  pamenlarge -xscale=${xs1} ${complete256_pbm} | \
+    pamenlarge -xscale=${xs2} | cksum
+  if [ ${xs1} != ${xs2} ]; then
+  pamenlarge -xscale=${xs2} ${complete256_pbm} | \
+    pamenlarge -xscale=${xs1} | cksum
   fi
-  pamenlarge -xscale=$(($xs1 * $xs2)) ${complete256_pbm} | cksum
+  pamenlarge -xscale=$((${xs1} * ${xs2})) ${complete256_pbm} | cksum
   done
 
 rm ${complete256_pbm}
@@ -43,19 +45,19 @@ echo "test 3"
 
 test3_pbm=${tmpdir}/test3.pbm
 
-for width in `seq 16`
+for width in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16  # for width in `seq 16`
   do
   pbmmake -g ${width} 1 | pnmpad -top=1 -white | \
       pnmpad -bottom=1 -black > ${test3_pbm}.${width}
   done
  
-  for xscale in `seq 16`
+  for xscale in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16  # for xscale in `seq 16`
     do echo -n ${xscale} " "
-    for width in `seq 16`
+    for width in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16  # for width in `seq 16` 
       do pamenlarge -xscale=${xscale} ${test3_pbm}.${width} ; done | cksum
       #
       # unlike most other tests we take the cksum of a composite PBM file
       #
     done
 
-rm ${test3_pbm}.[1-9]  ${test3_pbm}.1[0-6]
\ No newline at end of file
+rm ${test3_pbm}.[1-9]  ${test3_pbm}.1[0-6]
diff --git a/test/pamexec.test b/test/pamexec.test
index ec57f4ae..7c2bf054 100755
--- a/test/pamexec.test
+++ b/test/pamexec.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamexec
 # Also requires: pbmtext pamfile pbmminkowski pbmtog3 g3topbm
 
@@ -6,7 +6,9 @@ tmpdir=${tmpdir:-/tmp}
 test_pbm=${tmpdir}/test.pbm
 combined_pbm=${tmpdir}/combined.pbm
 
-for i in `seq 0 9`; do echo $i | pbmtext -builtin=fixed > ${test_pbm}$i; done
+for i in 0 1 2 3 4 5 6 7 8 9  # for i in `seq 0 9`
+  do echo ${i} | pbmtext -builtin=fixed > ${test_pbm}${i}
+  done
 cat ${test_pbm}[0123456789] > ${combined_pbm}
 
 echo "Test 1 : Should print 10 stdin: PBM RAW 21 24 1 1 BLACKANDWHITE twice"
@@ -16,7 +18,8 @@ pamexec "pamfile -mach" ${combined_pbm}  | uniq -c | sed 's/^ *//'
 
 echo "Test 2: Should print 1791121103 989 twice"
 
-for i in `seq 0 9`; do pbmminkowski ${test_pbm}$i   ; done | cksum
+for i in 0 1 2 3 4 5 6 7 8 9  # for i in `seq 0 9`
+  do pbmminkowski ${test_pbm}${i}; done | cksum
 pamexec "pbmminkowski" ${combined_pbm} | cksum
 
 rm ${test_pbm}[0123456789]
diff --git a/test/pamgauss.test b/test/pamgauss.test
index 87e172a8..6c3eff78 100755
--- a/test/pamgauss.test
+++ b/test/pamgauss.test
@@ -1,16 +1,16 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamgauss
 # Also requires: pamfile
 
 echo "Test 1"
 
-for i in `seq 3 11`
-do
-for s in `seq 1 9`
-do
-pamgauss $i $i -oversample=1 -sigma=.$s | cksum
-done
-done
+for i in 3 4 5 6 7 8 9 10 11    # for i in `seq 3 11`
+  do
+  for s in 1 2 3 4 5 6 7 8 9    # for s in `seq 9`
+    do
+    pamgauss ${i} ${i} -oversample=1 -sigma=.${s} | cksum
+    done
+  done
 
 echo "Test 2"
 
diff --git a/test/pamscale-filters1.test b/test/pamscale-filters1.test
index 63e0d012..575355c6 100755
--- a/test/pamscale-filters1.test
+++ b/test/pamscale-filters1.test
@@ -5,8 +5,8 @@
 tmpdir=${tmpdir:-/tmp}
 enlarge_ppm=${tmpdir}/enlarge.ppm
 
-width_height=`pamfile -size testimg.ppm | \
-                awk '{print "-width="$1, "-height="$2}'`
+width_height=$(pamfile -size testimg.ppm | \
+                awk '{print "-width="$1, "-height="$2}')
 
 # The target values here were determined by running the test on a
 # 32-bit GNU/Linux system and subtracting 2.5 (dB) from observed
diff --git a/test/pamscale-filters2.test b/test/pamscale-filters2.test
index f7370020..764488c5 100755
--- a/test/pamscale-filters2.test
+++ b/test/pamscale-filters2.test
@@ -5,8 +5,8 @@
 tmpdir=${tmpdir:-/tmp}
 stretch_ppm=${tmpdir}/stretch.ppm
 
-width_height=`pamfile -size testimg.ppm | \
-                awk '{print "-width="$1, "-height="$2}'`
+width_height=$(pamfile -size testimg.ppm | \
+               awk '{print "-width="$1, "-height="$2}')
 
 pamstretch -xscale=4 -yscale=3 testimg.ppm | pamvalidate > ${stretch_ppm}
 echo -xscale=4 -yscale=3 mitchell:  
diff --git a/test/pamscale-filters3.test b/test/pamscale-filters3.test
index 5a865508..23e79373 100755
--- a/test/pamscale-filters3.test
+++ b/test/pamscale-filters3.test
@@ -5,8 +5,8 @@
 tmpdir=${tmpdir:-/tmp}
 stretch_ppm=${tmpdir}/stretch.ppm
 
-width_height=`pamfile -size testimg.ppm | \
-                awk '{print "-width="$1, "-height="$2}'`
+width_height=$(pamfile -size testimg.ppm | \
+               awk '{print "-width="$1, "-height="$2}')
 
 pamstretch-gen 3.96 testimg.ppm | pamvalidate > ${stretch_ppm}
 echo 3.96 hermite:  
diff --git a/test/pamslice-roundtrip.test b/test/pamslice-roundtrip.test
index d1a8a72c..2b7929cf 100755
--- a/test/pamslice-roundtrip.test
+++ b/test/pamslice-roundtrip.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamslice pamdeinterlace
 # Also requires: pamfile pamcut pamtopnm pamflip
 
@@ -7,14 +7,14 @@ echo "Test 1.  Should print 139976034 137 twice"
 # Add header and reconstruct pbm image.
 # Note that in pamslice output 0 is white and 1 is black: opposite of PBM
 
-mwidth=$(pamfile -size maze.pbm | cut -d" " -f1)
+mwidth=$(pamfile -size maze.pbm | cut -d " " -f 1)
 height=16
 
 pamcut -top=0 -left=0 -height=${height} maze.pbm | cksum
 
 (echo "P1"
  echo "${mwidth} ${height}"
- for ((i = 0; i < ${height}; ++i))
+ for i in `seq 0 $((${height}-1))` 
      do
      pamslice -row=$i maze.pbm
      done | cut -d" " -f2- | sed 'y/01/10/' ) \
@@ -27,7 +27,6 @@ echo "Test 2.  Should print 1624460505 574 three times"
 # whole image takes much time.
 # Add header and reconstruct ppm image.
 
-
 tmpdir=${tmpdir:-/tmp}
 test1711_ppm=${tmpdir}/test1711.ppm
 
@@ -37,21 +36,20 @@ pamcut -left=50 -top=50 -width=17 -height=11 testimg.ppm | \
 (echo "P3"
  echo "17 11"
  echo "255"
- for ((i = 0; i < 11; ++i))
+ for i in 0 1 2 3 4 5 6 7 8 9 10   # for i in `seq 0 10`
      do
-     pamslice -row=$i ${test1711_ppm}
+     pamslice -row=${i} ${test1711_ppm}
      done | cut -d" " -f2- ) \
  | pamtopnm | cksum
 
 # Same as above test 2, but take cols instead of rows.
-# Should print 914327477 4864
 
 (echo "P3"
  echo "11 17"
  echo "255"
- for ((i = 0; i < 17; ++i))
+ for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16    # for i in `seq 0 16`
      do
-     pamslice -col=$i ${test1711_ppm}
+     pamslice -col=${i} ${test1711_ppm}
      done | cut -d " " -f2- ) | pamflip -xy | cksum
 
 echo "Test 3.  Should print 1624460505 574"
@@ -66,10 +64,10 @@ pamdeinterlace -takeeven ${test1711_ppm} > ${testeven_ppm}
 ( echo "P3"
   echo "17 11"
   echo "255"
-  ( for ((i = 0; i < 5; ++i))
+  ( for i in  0 1 2 3 4 
         do
-        pamslice -row=$i ${testeven_ppm}
-        pamslice -row=$i ${testodd_ppm}
+        pamslice -row=${i} ${testeven_ppm}
+        pamslice -row=${i} ${testodd_ppm}
         done
         pamslice -row=5 ${testeven_ppm};
   ) | cut -d" " -f2- ) | pamtopnm | cksum
diff --git a/test/pamtable.test b/test/pamtable.test
index 335d45c4..037d3b07 100755
--- a/test/pamtable.test
+++ b/test/pamtable.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamtable
 # Also requires: pamseq pamdepth pbmmake ppmrainbow
 
@@ -9,12 +9,13 @@ echo
 pamseq 4 1 -tupletype=RGBA | pamtable
 echo
 for maxval in 9 10 9999 10000 65535
-  do pbmmake -g 2 2 | pamdepth $maxval | pamtable
-     echo
-     ppmrainbow -width=3 -height=2 -norepeat black white | \
-     pamdepth $maxval | pamtable
-     echo
-     ppmrainbow -width=4 -height=2 -norepeat red blue green | \
-     pamdepth $maxval | pamtable
-     echo
+  do
+  pbmmake -g 2 2 | pamdepth ${maxval} | pamtable
+  echo
+  ppmrainbow -width=3 -height=2 -norepeat black white | \
+    pamdepth ${maxval} | pamtable
+  echo
+  ppmrainbow -width=4 -height=2 -norepeat red blue green | \
+    pamdepth ${maxval} | pamtable
+  echo
   done
diff --git a/test/pbm-misc-converters.ok b/test/pbm-misc-converters.ok
index a137102f..4a511d35 100644
--- a/test/pbm-misc-converters.ok
+++ b/test/pbm-misc-converters.ok
@@ -1,27 +1,27 @@
-1638343024 43
-2141128209 77
-2542756600 120
-3102495729 32
-2414506375 47
-3241517214 145
-1454090165 46
-1436169407 46
-1454090165 46
-2912484298 46
-3576177652 52
-1478164284 52
-3213223606 141
-3213223606 141
-3213223606 141
-1463148415 108
-203901789 30
-3732005859 92
-2459345477 86
-424535246 92
-609530223 252
-4195053594 248
-2602382240 43
-129620534 361
-2256096096 80
-1349121911 149
+3017587389 501
+2529120683 622
+2361485126 1740
+4017331268 450
+3481527833 672
+2707446245 1744
+2100180787 510
+2963515498 510
+2100180787 510
+1513122412 510
+34750317 804
+1731023722 546
+1540204160 762
+908699854 763
+908699854 763
+1554612498 636
+1574732995 458
+3813814418 972
+1385394245 966
+3924854157 972
+3970098281 3388
+167529797 3384
+2260274013 483
+2120102625 5318
+541430122 708
+2297581967 1725
 3955750161 284701
diff --git a/test/pbm-misc-converters.test b/test/pbm-misc-converters.test
index ad96f13c..93773e48 100755
--- a/test/pbm-misc-converters.test
+++ b/test/pbm-misc-converters.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pbmto10x pbmto4425 pbmtoascii pbmtobbnbg
 # This script tests: pbmtodjvurle pbmtoepson pbmtogo pbmtoibm23xx
 # This script tests: pbmtolj pbmtoln03 pbmtomatrixorbital pbmtonokia
@@ -10,31 +10,31 @@
 # direction.  We check whether the output is unchanged from older
 # versions.
 
-pbmto10x             testgrid.pbm | cksum
-pbmto4425            testgrid.pbm | cksum
-pbmtoascii           testgrid.pbm | cksum
-pbmtoascii -2x4      testgrid.pbm | cksum
-pbmtobbnbg         < testgrid.pbm | cksum
-pbmtodjvurle         testgrid.pbm | cksum
-pbmtoepson           testgrid.pbm | cksum
-pbmtoepson -protocol=escp   testgrid.pbm | cksum
-pbmtoepson -protocol=escp9  testgrid.pbm | cksum
-pbmtoepson -nonadjacent     testgrid.pbm | cksum
-pbmtogo              testgrid.pbm | cksum
-pbmtoibm23xx -xres=60 -yres=60 testgrid.pbm | cksum
-pbmtolj              testgrid.pbm | cksum
-pbmtolj  -packbits   testgrid.pbm | cksum
-pbmtolj  -compress   testgrid.pbm | cksum
-pbmtoln03            testgrid.pbm | cksum
-pbmtomatrixorbital < testgrid.pbm | cksum
-pbmtonokia -fmt HEX_NOL testgrid.pbm | cksum
-pbmtonokia -fmt HEX_NGG testgrid.pbm | cksum
-pbmtonokia -fmt HEX_NPM testgrid.pbm | cksum
-pbmtonokia -fmt NOL  testgrid.pbm | cksum
-pbmtonokia -fmt NGG  testgrid.pbm | cksum
-pbmtonokia -fmt NPM  testgrid.pbm | cksum
-pbmtoplot            testgrid.pbm | cksum
-pbmtoptx             testgrid.pbm | cksum
-pbmtozinc            testgrid.pbm | cksum
+pbmto10x             maze.pbm | cksum
+pbmto4425            maze.pbm | cksum
+pbmtoascii           maze.pbm | cksum
+pbmtoascii -2x4      maze.pbm | cksum
+pbmtobbnbg         < maze.pbm | cksum
+pbmtodjvurle         maze.pbm | cksum
+pbmtoepson           maze.pbm | cksum
+pbmtoepson -protocol=escp   maze.pbm | cksum
+pbmtoepson -protocol=escp9  maze.pbm | cksum
+pbmtoepson -nonadjacent     maze.pbm | cksum
+pbmtogo              maze.pbm | cksum
+pbmtoibm23xx -xres=60 -yres=60 maze.pbm | cksum
+pbmtolj              maze.pbm | cksum
+pbmtolj  -packbits   maze.pbm | cksum
+pbmtolj  -compress   maze.pbm | cksum
+pbmtoln03            maze.pbm | cksum
+pbmtomatrixorbital < maze.pbm | cksum
+pbmtonokia -fmt HEX_NOL maze.pbm | cksum
+pbmtonokia -fmt HEX_NGG maze.pbm | cksum
+pbmtonokia -fmt HEX_NPM maze.pbm | cksum
+pbmtonokia -fmt NOL  maze.pbm | cksum
+pbmtonokia -fmt NGG  maze.pbm | cksum
+pbmtonokia -fmt NPM  maze.pbm | cksum
+pbmtoplot            maze.pbm | cksum
+pbmtoptx             maze.pbm | cksum
+pbmtozinc            maze.pbm | cksum
 
 (pbmpage 1; pbmpage 2; pbmpage 3) | pbmtoppa | cksum
diff --git a/test/pbmmake.test b/test/pbmmake.test
index eef4e0da..c3691b80 100755
--- a/test/pbmmake.test
+++ b/test/pbmmake.test
@@ -1,25 +1,26 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pbmmake
 # Also requires:
 
 echo "Test 1"
 
-for i in `seq 1 8`
-do
-for color in -white -black -gray
-do
-pbmmake -plain $color $i $i | tr -d '\n'; echo
-done
-done
+for size in 1 2 3 4 5 6 7 8             # for size in `seq 8`
+  do
+  for color in -white -black -gray
+    do
+    pbmmake -plain ${color} ${size} ${size} | tr -d '\n'; echo
+    done
+  done
 
 echo "Test 2"
 
-for i in `seq 8 5 98`
-do
- ( pbmmake -w $i $i ;
-  pbmmake -b $i $i ;
-  pbmmake  -g $i $i ) | cksum
-done
+for size in 8 13 18 23 28 33 38 43 48 53 58 63 68 73 78 83 88 93 98
+	    # for size in `seq 8 5 98`
+  do
+  ( pbmmake -w ${size} ${size} ;
+    pbmmake -b ${size} ${size} ;
+    pbmmake -g ${size} ${size} ) | cksum
+  done
 
 echo "Test Invalid"
 
diff --git a/test/pbmnoise1.test b/test/pbmnoise1.test
index 1b8fc241..855a5629 100755
--- a/test/pbmnoise1.test
+++ b/test/pbmnoise1.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pbmnoise
 #
 
@@ -13,7 +13,9 @@ done
 
 echo "Test 2."
 
-for ((i=0 ; i<=32; i++))
+for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 \
+	 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 
+         # for i in `seq 0 32`
   do
   pbmnoise -endian=little -randomseed=11 -ratio=$i/32 -plain 32 1 | \
   tr '\n' ' ';  echo
diff --git a/test/pbmtext.test b/test/pbmtext.test
index a7c75c23..b82b0771 100755
--- a/test/pbmtext.test
+++ b/test/pbmtext.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pbmtext
 # Also requires: pamfile
 
@@ -41,7 +41,7 @@ for flags in "" "-builtin fixed"
 do
 pbmtext ${flags} ${text} | tee ${temp_pbm} | cksum
 width1=`pamfile ${temp_pbm} | awk '$2=="PBM" && NR==1 {w=$4}; END {print w}' `
-width2=`pbmtext ${flags} ${text} --dry-run | awk '{print $1}' `
+width2=`pbmtext ${flags} ${text} --dry-run | cut -d " " -f 1`
 
 if [ ${width1} -eq ${width2} ]; then
     pbmtext ${flags} -width=${width1} ${text} | cksum
diff --git a/test/pcx-roundtrip.ok b/test/pcx-roundtrip.ok
index 968f46b9..0f5ac87d 100644
--- a/test/pcx-roundtrip.ok
+++ b/test/pcx-roundtrip.ok
@@ -1,5 +1,9 @@
+Test 1.  Should print 1926073387 101484
 1926073387 101484
+Test 2.  Should print 369063776 101484 three times
 369063776 101484
 369063776 101484
 369063776 101484
-829921912 685
+Test 3.  Should print 669206373 10102 twice
+669206373 10102
+669206373 10102
diff --git a/test/pcx-roundtrip.test b/test/pcx-roundtrip.test
index 3dba42b9..3a78faba 100755
--- a/test/pcx-roundtrip.test
+++ b/test/pcx-roundtrip.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: ppmtopcx pcxtoppm
 # Also requires: pnmremap
 
@@ -29,17 +29,16 @@ P3
 255 255 255
 EOF
 
-# Test 1. Should print 1926073387 101484
+echo "Test 1.  Should print 1926073387 101484"
 ppmtopcx testimg.ppm | pcxtoppm | cksum
 
-# Test 2.  Should print 369063776 101484 three times
+echo "Test 2.  Should print 369063776 101484 three times"
 pnmremap testimg.ppm -mapfile=${pcxstd_ppm} | tee ${testpcx_ppm} | cksum
 ppmtopcx -stdpalette -packed ${testpcx_ppm} | pcxtoppm | cksum
 ppmtopcx -stdpalette -packed -8bit ${testpcx_ppm} | pcxtoppm | cksum
 
 rm ${testpcx_ppm} ${pcxstd_ppm}
 
-# Test 3. Should print 829921912 685 which is the
-# result of:
-# pgmtoppm < testgrid.pbm | cksum
-ppmtopcx -stdpalette -packed testgrid.pbm | pcxtoppm | cksum
+echo "Test 3.  Should print 669206373 10102 twice"
+pgmtoppm < maze.pbm | cksum
+ppmtopcx -stdpalette -packed maze.pbm | pcxtoppm | cksum
diff --git a/test/pdb-roundtrip.ok b/test/pdb-roundtrip.ok
index b903da8d..fbc897fe 100644
--- a/test/pdb-roundtrip.ok
+++ b/test/pdb-roundtrip.ok
@@ -1,18 +1,18 @@
-pbm grid
+Test 1: pbm grid : Should print 2224198737 25671 three times
 2224198737 25671
 2224198737 25671
 2224198737 25671
-pbm tiled
+Test 2: pbmnoise : Should print 0 0 0 0 : 0 four times
 0 0 0 0 : 0
 0 0 0 0 : 0
 0 0 0 0 : 0
 0 0 0 0 : 0
-pgm ellipse
+Test 3: pgm ellipse : Should print 0 0 0 0 0 : 0 four times
 0 0 0 0 0 : 0
 0 0 0 0 0 : 0
 0 0 0 0 0 : 0
 0 0 0 0 0 : 0
-pgm ellipse -4depth
+Test 4: pgm ellipse -4depth : Should print 0 0 0 0 0 : 0 three times
 0 0 0 0 0 : 0
 0 0 0 0 0 : 0
 0 0 0 0 0 : 0
diff --git a/test/pdb-roundtrip.test b/test/pdb-roundtrip.test
index 32d7aa87..c31a63e1 100755
--- a/test/pdb-roundtrip.test
+++ b/test/pdb-roundtrip.test
@@ -3,35 +3,29 @@
 # Also requires: pnmtile pgmramp pamtopnm pamdepth
 
 tmpdir=${tmpdir:-/tmp}
-tiled_pbm=${tmpdir}/tiled.pbm
+noise_pbm=${tmpdir}/noise.pbm
 ellipse_pgm=${tmpdir}/ellipse.pgm
 
 
-# Test 1. Should produce 2224198737 25671
-# 3 times 
-echo pbm grid
+echo "Test 1: pbm grid : Should print 2224198737 25671 three times"
 for flag in "-compressed" "-maybecompressed" "-uncompressed"
    do
    pamtopdbimg ${flag} testgrid.pbm | pdbimgtopam | cksum
    done
 
 
-# Test 2. Should produce 0 0 0
-# 4 times 
-echo pbm tiled
-pnmtile 160 160 testgrid.pbm > ${tiled_pbm}
+echo "Test 2: pbmnoise : Should print 0 0 0 0 : 0 four times" 
+pbmnoise -randomseed=1 160 160 > ${noise_pbm}
 for flag in "" "-compressed" "-maybecompressed" "-uncompressed"
   do
-  pamtopdbimg ${flag} ${tiled_pbm} | pdbimgtopam | pamtopnm | \
-    cmp -s - ${tiled_pbm}
+  pamtopdbimg ${flag} ${noise_pbm} | pdbimgtopam | pamtopnm | \
+    cmp -s - ${noise_pbm}
   echo ${PIPESTATUS[@]} ":" $?
   done
-rm ${tiled_pbm}
+rm ${noise_pbm}
 
 
-# Test 3. Should produce 0 0 0
-# 4 times
-echo pgm ellipse
+echo "Test 3: pgm ellipse : Should print 0 0 0 0 0 : 0 four times"
 pgmramp -ellipse 160 160 -maxval=3 > ${ellipse_pgm}
 for flag in "" "-compressed" "-maybecompressed" "-uncompressed"
     do
@@ -42,9 +36,7 @@ for flag in "" "-compressed" "-maybecompressed" "-uncompressed"
 rm ${ellipse_pgm}
 
 
-# Test 3. Should produce 0 0 0
-# 3 times 
-echo pgm ellipse -4depth
+echo "Test 4: pgm ellipse -4depth : Should print 0 0 0 0 0 : 0 three times"
 pgmramp -ellipse 160 160 -maxval=15 > ${ellipse_pgm}
 for flag in "-compressed" "-maybecompressed" "-uncompressed"
     do
@@ -52,4 +44,4 @@ for flag in "-compressed" "-maybecompressed" "-uncompressed"
       pamtopnm | pamdepth 15 | cmp -s - ${ellipse_pgm}
     echo ${PIPESTATUS[@]} ":" $?
     done
-rm ${ellipse_pgm}
\ No newline at end of file
+rm ${ellipse_pgm}
diff --git a/test/pgmnoise.ok b/test/pgmnoise.ok
index 80376c78..d98ee053 100644
--- a/test/pgmnoise.ok
+++ b/test/pgmnoise.ok
@@ -77,7 +77,7 @@ Should print four identical lines
 969759084 1682
 969759084 1682
 Test 6.
-First column should be 2^n - 1
+First column should be 2^n - 1.  Last column should be 'pool'.
 1 pgmnoise: method: pool
 3 pgmnoise: method: pool
 7 pgmnoise: method: pool
@@ -86,6 +86,9 @@ First column should be 2^n - 1
 63 pgmnoise: method: pool
 127 pgmnoise: method: pool
 255 pgmnoise: method: pool
+511 pgmnoise: method: pool
+1023 pgmnoise: method: pool
+65535 pgmnoise: method: pool
 Test Invalid
 Expected failure 1 1
 Expected failure 2 1
diff --git a/test/pgmnoise.test b/test/pgmnoise.test
index 4a6e21dd..45374793 100755
--- a/test/pgmnoise.test
+++ b/test/pgmnoise.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pgmnoise
 # Also requires: pgmhist pamvalidate pamfile
 
@@ -17,7 +17,7 @@ pgmnoise --randomseed=5489 -maxval=9999 -plain 5 20
 
 
 echo "Test 3."
-for maxval in `seq 16` 255 65535
+for maxval in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 255 65535
   do
   echo ${maxval}
   pgmnoise -maxval=${maxval} -randomseed=1 -plain 16 1 | tr '\n' ' '
@@ -26,7 +26,8 @@ echo
 
 echo "Test 4."
 # Check for maxval violation
-for maxval in `seq 16` 30 31 32 254 255 256 65534 65535
+for maxval in  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 \
+               30 31 32 254 255 256 65534 65535
   do
   echo -n ${maxval} " "
   pgmnoise -maxval=${maxval} -randomseed=1 -plain ${maxval} 10 | \
@@ -42,20 +43,29 @@ for xysize in "1 10000" "100 100" "250 40" "1000 10"
 
 
 tmpdir=${tmpdir:-/tmp}
-messages=${tmpdir}/messages
+outfile=${tmpdir}/out
 
 echo "Test 6."
-echo "First column should be 2^n - 1"
+echo "First column should be 2^n - 1.  Last column should be 'pool'."
 # The "pool" method of generating pixvals is used iff maxval is
 # a power of 2 minus 1: 1, 3, 7, 15, 31 ...
-for maxval in `seq 35; seq 60 69; seq 120 129; seq 250 259`
-  do
-  pgmnoise -maxval=${maxval} -randomseed=1 -verbose 1 1 > /dev/null \
-  2> ${messages}
-  awk -v mval=${maxval} '/method/ && /pool/ { print mval, $0 }' ${messages}
-  done
 
-  rm ${messages}
+    
+for maxval in \
+    1 2 3 4 5 6 7 8 9 \
+    10 11 12 13 14 15 16 17 18 19 \
+    20 21 22 23 24 25 26 27 28 29 \
+    30 31 32 33  60 61 62 63 64 65 \
+    127 255 511 1023  65535 \
+    129 142 186 219 677 1068 1788 1820 2067 2154 2301 2317 \
+    5180 5321 5596 6304 7565 9525 \
+    10501 14178 25797 27451 28653
+    do
+    pgmnoise -maxval=${maxval} -plain -randomseed=1 -verbose 1 1 \
+		 > /dev/null 2> ${outfile}
+    awk -v mval=${maxval} '/method/ && /pool/ { print mval, $0 }' ${outfile}
+    rm ${outfile}
+    done
 
 
 echo "Test Invalid"
diff --git a/test/pgmtopgm.ok b/test/pgmtopgm.ok
index 53c25a44..38cfd268 100644
--- a/test/pgmtopgm.ok
+++ b/test/pgmtopgm.ok
@@ -1 +1,11 @@
-729348909 237
+Test 1.  Should print two identical PGM images
+P2
+10 1
+255
+0 0 0 0 0 0 0 0 0 0
+P2
+10 1
+255
+0 0 0 0 0 0 0 0 0 0
+Test 2.  Should print 2582999797 3376
+2582999797 3376
diff --git a/test/pgmtopgm.test b/test/pgmtopgm.test
index e919fdac..d81260d8 100755
--- a/test/pgmtopgm.test
+++ b/test/pgmtopgm.test
@@ -1,6 +1,12 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pgmtopgm
-# Also requires:
+# Also requires: pgmmake
 
+echo "Test 1.  Should print two identical PGM images"
 
-pgmtopgm < testgrid.pbm | cksum
+pgmmake -plain 0 10 1
+pgmmake 0 10 1 | pgmtopgm -plain
+
+echo "Test 2.  Should print 2582999797 3376"
+
+pgmtopgm < maze.pbm | cksum
diff --git a/test/pnmcrop1.ok b/test/pnmcrop1.ok
index d02d14b3..d979d2db 100644
--- a/test/pnmcrop1.ok
+++ b/test/pnmcrop1.ok
@@ -1,103 +1,82 @@
 Test 1
-test.pbm
-
-0 0 -7 0 28 25 rgb-1:1/1/1 0.000000
--white
-0 0 -7 0 28 25 rgb-1:1/1/1 0.000000
--black
-0 0 0 -2 28 30 rgb-1:0/0/0 0.000000
--sides
-0 0 -7 0 28 25 rgb-1:1/1/1 0.000000
--top
-0 0 -7 0 28 25 rgb-1:1/1/1 0.000000
--bottom
-0 0 0 0 28 32 rgb-1:1/1/1 0.000000
--left
-0 0 0 0 28 32 rgb-1:1/1/1 0.000000
--right
-0 0 0 0 28 32 rgb-1:1/1/1 0.000000
--top -bottom
-0 0 -7 0 28 25 rgb-1:1/1/1 0.000000
--bottom -bg-corner=bottomright
-0 0 0 -2 28 30 rgb-1:0/0/0 0.000000
--right -bg-corner=bottomright
-0 0 0 0 28 32 rgb-1:0/0/0 0.000000
--bg-color=white
-0 0 0 0 28 32 rgb-1:1/1/1 0.000000
--bg-color=black
-0 0 0 -2 28 30 rgb-1:0/0/0 0.000000
--bg-color=red
-0 0 0 0 28 32 rgb-1:0/0/0 0.000000
-test.ppm
-
+file: maze.pbm option: 
+0 0 -7 0 71 68 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -white
+0 0 -7 0 71 68 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -black
+0 0 0 -2 71 73 rgb-1:0/0/0 0.000000
+file: maze.pbm option: -sides
+0 0 -7 0 71 68 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -top
+0 0 -7 0 71 68 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -bottom
+0 0 0 0 71 75 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -left
+0 0 0 0 71 75 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -right
+0 0 0 0 71 75 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -top -bottom
+0 0 -7 0 71 68 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -bottom -bg-corner=bottomright
+0 0 0 -2 71 73 rgb-1:0/0/0 0.000000
+file: maze.pbm option: -right -bg-corner=bottomright
+0 0 0 0 71 75 rgb-1:0/0/0 0.000000
+file: maze.pbm option: -bg-color=white
+0 0 0 0 71 75 rgb-1:1/1/1 0.000000
+file: maze.pbm option: -bg-color=black
+0 0 0 -2 71 73 rgb-1:0/0/0 0.000000
+file: maze.pbm option: -bg-color=red
+0 0 0 0 71 75 rgb-1:0/0/0 0.000000
+file: rose.ppm option: 
 0 0 0 0 250 161 rgb-255:127/127/127 0.000000
--white
+file: rose.ppm option: -white
 -6 0 0 0 244 161 rgb-255:255/255/255 0.000000
--black
+file: rose.ppm option: -black
 0 -11 0 0 239 161 rgb-255:0/0/0 0.000000
--sides
+file: rose.ppm option: -sides
 -6 0 0 0 244 161 rgb-255:255/255/255 0.000000
--top
+file: rose.ppm option: -top
 0 0 0 0 250 161 rgb-255:127/127/127 0.000000
--bottom
+file: rose.ppm option: -bottom
 0 0 0 0 250 161 rgb-255:127/127/127 0.000000
--left
+file: rose.ppm option: -left
 0 0 0 0 250 161 rgb-255:127/127/127 0.000000
--right
+file: rose.ppm option: -right
 0 0 0 0 250 161 rgb-255:127/127/127 0.000000
--top -bottom
+file: rose.ppm option: -top -bottom
 0 0 0 0 250 161 rgb-255:127/127/127 0.000000
--bottom -bg-corner=bottomright
+file: rose.ppm option: -bottom -bg-corner=bottomright
 0 0 0 0 250 161 rgb-255:0/0/0 0.000000
--right -bg-corner=bottomright
+file: rose.ppm option: -right -bg-corner=bottomright
 0 -11 0 0 239 161 rgb-255:0/0/0 0.000000
--bg-color=white
+file: rose.ppm option: -bg-color=white
 -6 0 0 0 244 161 rgb-255:255/255/255 0.000000
--bg-color=black
+file: rose.ppm option: -bg-color=black
 0 -11 0 0 239 161 rgb-255:0/0/0 0.000000
--bg-color=red
+file: rose.ppm option: -bg-color=red
 0 0 0 0 250 161 rgb-255:255/0/0 0.000000
-Test 2
-test.pbm
-
-3130931737 109
-3130931737 109
--white
-3130931737 109
-3130931737 109
--top
-3130931737 109
-3130931737 109
-test.ppm
-
-1435955776 120765
-1435955776 120765
--white
-638507845 117867
-638507845 117867
--top
-1435955776 120765
-1435955776 120765
+Test 2.  Should print 0 six times
+file: maze.pbm option:
+0
+file: maze.pbm option: -white
+0
+file: maze.pbm option: -top
+0
+file: rose.ppm option:
+0
+file: rose.ppm option: -white
+0
+file: rose.ppm option: -top
+0
 Test Invalid
--reportfull -reportsize
 Expected failure:  -reportfull -reportsize 1
--reportfull -borderfile=testgrid.pbm
 Expected failure:  -reportfull -borderfile=testgrid.pbm 1
--reportsize -borderfile=testgrid.pbm
 Expected failure:  -reportsize -borderfile=testgrid.pbm 1
--black -white
 Expected failure:  -black -white 1
--black -sides
 Expected failure:  -black -sides 1
--white -bg-color=red
 Expected failure:  -white -bg-color=red 1
--white -bg-corner=topleft
 Expected failure:  -white -bg-corner=topleft 1
--white -bg-corner=top
 Expected failure:  -white -bg-corner=top 1
--blank-image=pasturize
 Expected failure:  -blank-image=pasturize 1
--bg-color=black -closeness=-1
 Expected failure:  -bg-color=black -closeness=-1 1
--bg-color=black -closeness=101
 Expected failure:  -bg-color=black -closeness=101 1
diff --git a/test/pnmcrop1.test b/test/pnmcrop1.test
index 936cbd95..00d5ee80 100755
--- a/test/pnmcrop1.test
+++ b/test/pnmcrop1.test
@@ -1,13 +1,13 @@
-#! /bin/bash
+ #! /bin/sh
 # This script tests: pnmcrop
 # Also requires: pnmpad pnmmargin pamcut
 
 tmpdir=${tmpdir:-/tmp}
 
-test_pbm=${tmpdir}/test.pbm
-test_ppm=${tmpdir}/test.ppm
+test_pbm=${tmpdir}/maze.pbm
+test_ppm=${tmpdir}/rose.ppm
 
-pnmmargin -white 7 testgrid.pbm | pnmpad -black -bottom=2  > ${test_pbm}
+pnmmargin -white 7 maze.pbm | pnmpad -black -bottom=2  > ${test_pbm}
 pnmmargin -white 6 testimg.ppm  | pnmpad -black -right=11  > ${test_ppm}
 
 #Test 1
@@ -15,36 +15,41 @@ echo Test 1
 
 for input_file in ${test_pbm} ${test_ppm}
   do
-  echo `basename ${input_file}`
+  bfile=`basename ${input_file}`
   for option in "" "-white" "-black" "-sides" \
               "-top" "-bottom" "-left" "-right" "-top -bottom" \
               "-bottom -bg-corner=bottomright" \
               "-right -bg-corner=bottomright" \
               "-bg-color=white" "-bg-color=black" "-bg-color=red"
     do
-    echo ${option}
+    echo "file: ${bfile} option: ${option}"
     pnmcrop -reportfull ${option} ${input_file} || echo fail
     done
   done
 
 #Test 2
-echo Test 2
+echo "Test 2.  Should print 0 six times"
+
+out_pnm=${tmpdir}/out.pnm
 
 for input_file in ${test_pbm} ${test_ppm}
   do
-  echo `basename ${input_file}`
+  bfile=`basename ${input_file}`
   for option in "" "-white" "-top"
     do
-    echo ${option}
+    echo file: ${bfile} option: ${option}
     # Normal crop operation
-    pnmcrop ${option} ${input_file} | cksum
+    pnmcrop ${option} ${input_file} > ${out_pnm}
 
     # Compute edge extents with pnmcrop; let pamcut do the actual cropping
     pamcut ${input_file} `pnmcrop -reportsize ${option} ${input_file} | \
         awk 'NF==6 && NR==1 && \
              $1<=0 && $2<=0 && $3<=0 && $4<=0 && $5>=0 && $6>=0 \
-             { printf("-cropleft=%d -cropright=%d  ", -$1, -$2);
-               printf("-croptop=%d -cropbottom=%d", -$3, -$4) }' ` | cksum
+             { printf("-cropleft=%d -cropright=%d ", -$1, -$2);
+               printf("-croptop=%d -cropbottom=%d ", -$3, -$4) }' ` | \
+        cmp -s - ${out_pnm}
+    echo $?
+    rm ${out_pnm}
     done
   done
 
@@ -72,7 +77,6 @@ for option in "-reportfull -reportsize" \
               "-bg-color=black -closeness=-1" \
               "-bg-color=black -closeness=101"
     do
-    echo ${option}
     pnmcrop -reportfull ${option} testgrid.pbm > ${test_out} || \
         echo -n "Expected failure: " ${option}
         test -s ${test_out}; echo " "$?
diff --git a/test/pnmcrop2.test b/test/pnmcrop2.test
index d6c83c73..3d402a57 100755
--- a/test/pnmcrop2.test
+++ b/test/pnmcrop2.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pnmcrop
 # Also requires:
 
@@ -44,7 +44,7 @@ for corner in topleft topright bottomleft bottomright
 
 echo Test 3
 
-for closeness in `seq 0 6`
+for closeness in 0 1 2 3 4 5 6  # for closeness in `seq 0 6`
   do
   echo ${closeness}
   pnmcrop -reportfull -bg-corner=topleft -closeness=${closeness} ${test_pgm} \
diff --git a/test/pnmcrop3.ok b/test/pnmcrop3.ok
index 6824143a..5a86139c 100644
--- a/test/pnmcrop3.ok
+++ b/test/pnmcrop3.ok
@@ -86,5 +86,5 @@ P1
 1111111111111
 -3 -1 -1 -1 9 13
 544280424 101484
-4294967295 0
-4294967295 0
+Expected failure 1 1
+Expected failure 2 1
diff --git a/test/pnmcrop3.test b/test/pnmcrop3.test
index c46fd7ea..04cf6f52 100755
--- a/test/pnmcrop3.test
+++ b/test/pnmcrop3.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pnmcrop
 # Also requires: pnmpad pamfile pgmmake
 
@@ -16,7 +16,7 @@ pnmpad -top=11 -bottom=1 -left=21 -right=9 testimg.ppm > ${test_ppm}
 pnmpad -top=4 -bottom=4 -left=8 -right=5 testgrid.pbm > ${border_pbm}
 pnmpad -top=7 -bottom=5 -left=30 -right=0 testimg.ppm > ${border_ppm}
 
-pgmmake 0.5 `pamfile -size ${test_pbm}` > ${gray_pgm}
+pgmmake 0.5 $(pamfile -size ${test_pbm}) > ${gray_pgm}
 
 # Test 1
 echo Test 1
@@ -38,7 +38,7 @@ echo Test 2
 for input_file in ${test_pbm} ${test_ppm}
   do
   echo `basename ${input_file}`
-  for margin in `seq 0 5`
+  for margin in 0 1 2 3 4 5  # for margin in `seq 0 5`
     do
     pnmcrop -reportsize -margin=${margin} ${input_file} || echo fail2
     done
@@ -59,13 +59,22 @@ pnmcrop -borderfile=${border_pbm} ${test_pbm} | pnmcrop -black -reportsize
 
 pnmcrop -borderfile=${border_ppm} ${test_ppm} | cksum 
 
-# The following two cases are expected to fai
+test_out=${tmpdir}/test_out
 
+# The following two cases are expected to fail
+
+echo "Border file size mismatch" 1>&2
 echo "Error messages should appear below the line." 1>&2
 echo "--------------------------------------------" 1>&2
 
-pnmcrop -borderfile=${border_ppm} ${test_pbm} | cksum 
-pnmcrop -borderfile=${border_pbm} ${test_ppm} | cksum 
+pnmcrop -borderfile=${border_ppm} ${test_pbm} > ${test_out} || \
+        echo -n "Expected failure 1";
+        test -s ${test_out}; echo " "$?
+        rm ${test_out}
 
+pnmcrop -borderfile=${border_pbm} ${test_ppm} > ${test_out} || \
+        echo -n "Expected failure 2";
+        test -s ${test_out}; echo " "$?
+        rm ${test_out}
 
-rm ${test_pbm} ${test_ppm} ${border_pbm} ${border_ppm} ${gray_pgm}
\ No newline at end of file
+rm ${test_pbm} ${test_ppm} ${border_pbm} ${border_ppm} ${gray_pgm}
diff --git a/test/pnmtopnm-plain.ok b/test/pnmtopnm-plain.ok
index 02d99f1e..640f0964 100644
--- a/test/pnmtopnm-plain.ok
+++ b/test/pnmtopnm-plain.ok
@@ -1,48 +1,51 @@
+Test.  Should print three identical images in plain format, twice each
 P1
-14 16
-10101010101010
-11111111111111
-10101010101010
-11111111111111
-10101010101010
-11111111111111
-10101010101010
-11111111111111
-10101010101010
-11111111111111
-10101010101010
-11111111111111
-10101010101010
-11111111111111
-10101010101010
-11111111111111
+5 5
+01010
+10101
+01010
+10101
+01010
+P1
+5 5
+01010
+10101
+01010
+10101
+01010
+P2
+8 8
+7
+0 0 1 1 2 2 3 3
+0 1 1 2 2 3 3 4
+1 1 2 2 3 3 4 4
+1 2 2 3 3 4 4 5
+2 2 3 3 4 4 5 5
+2 3 3 4 4 5 5 6
+3 3 4 4 5 5 6 6
+3 4 4 5 5 6 6 7
 P2
-14 16
+8 8
+7
+0 0 1 1 2 2 3 3 
+0 1 1 2 2 3 3 4 
+1 1 2 2 3 3 4 4 
+1 2 2 3 3 4 4 5 
+2 2 3 3 4 4 5 5 
+2 3 3 4 4 5 5 6 
+3 3 4 4 5 5 6 6 
+3 4 4 5 5 6 6 7 
+P3
+4 4
 255
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 255 0 255 0 255 0 255 0 255 0 255 0 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 
+0 31 255  0 31 255  63 0 0  0 31 255
+0 31 255  0 31 255  0 31 255  63 0 0
+0 31 255  63 0 0  63 0 0  63 0 0
+63 0 0  0 31 255  63 0 0  63 0 0
 P3
-14 16
+4 4
 255
-0 0 0 255 255 255 0 0 0 255 255 255 0 0 0 255 255 255 0 0 0 255 255 255 
-0 0 0 255 255 255 0 0 0 255 255 255 0 0 0 255 255 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 0 0 255 255 255 0 0 0 255 255 255 0 0 0 255 255 255 0 0 0 255 255 255 
-0 0 0 255 255 255 0 0 0 255 255 255 0 0 0 255 255 255 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
-0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
+0 31 255 0 31 255 63 0 0 0 31 255 
+0 31 255 0 31 255 0 31 255 63 0 0 
+0 31 255 63 0 0 63 0 0 63 0 0 
+63 0 0 0 31 255 63 0 0 63 0 0 
diff --git a/test/pnmtopnm-plain.test b/test/pnmtopnm-plain.test
index 5b7e4b48..87b74064 100755
--- a/test/pnmtopnm-plain.test
+++ b/test/pnmtopnm-plain.test
@@ -1,10 +1,14 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pamtopnm
-# Also requires: pgmtopgm ppmtoppm
+# Also requires: pbmmake pgmramp ppmpat
 
-pamtopnm -plain testgrid.pbm
+echo "Test.  Should print three identical images in plain format, twice each"
 
-pgmtopgm < testgrid.pbm | pamtopnm -plain
+pbmmake -g 5 5 -plain
+pbmmake -g 5 5 | pamtopnm -plain
 
-ppmtoppm < testgrid.pbm | pamtopnm -plain | \
-  head -n11
+pgmramp -maxval 7 -diag 8 8 -plain
+pgmramp -maxval 7 -diag 8 8 | pamtopnm -plain
+
+ppmpat -g2 -color=rgb:00/1f/ff,rgb:3f/00/00 -mesh 4 4 -plain
+ppmpat -g2 -color=rgb:00/1f/ff,rgb:3f/00/00 -mesh 4 4 | pamtopnm -plain
diff --git a/test/ppmshift.ok b/test/ppmshift.ok
index e18de8f0..735ac445 100755
--- a/test/ppmshift.ok
+++ b/test/ppmshift.ok
@@ -2,13 +2,22 @@ Test 1. Should print: 3705777303 101484
 3705777303 101484
 Test 2. Should print: 202790723 685
 202790723 685
-Test 3. Should print: 0 : 0
-0 : 0
-Test 4. (15) Should print: 0 : 0
-0 : 0
-Test 4. (16) Should print: 0 : 0
-0 : 0
-Test 4. (20) Should print: 0 : 0
-0 : 0
-Test 4. (1000) Should print: 0 : 0
-0 : 0
+Test 3. Should print: 0 0 : 0
+0 0 : 0
+Test 4.  Should print: 0 0 : 0
+0 0 : 0
+Test 5. (1) Should print: 1 twice
+1
+1
+Test 5. (15) Should print: 1 twice
+1
+1
+Test 5. (16) Should print: 1 twice
+1
+1
+Test 5. (20) Should print: 1 twice
+1
+1
+Test 5. (1000) Should print: 1 twice
+1
+1
diff --git a/test/ppmshift.test b/test/ppmshift.test
index cd086d68..fff193b3 100755
--- a/test/ppmshift.test
+++ b/test/ppmshift.test
@@ -1,6 +1,6 @@
 #! /bin/bash
 # This script tests: ppmshift
-# Also requires:
+# Also requires: pgmtoppm
 
 echo "Test 1. Should print: 3705777303 101484"
 ppmshift -seed=1 10 testimg.ppm | cksum
@@ -8,20 +8,35 @@ ppmshift -seed=1 10 testimg.ppm | cksum
 echo "Test 2. Should print: 202790723 685"
 ppmshift -seed=1 1 testgrid.pbm | cksum
 
-echo "Test 3. Should print: 0 : 0"
-ppmshift -seed=1 0 testimg.ppm | cmp -s - testimg.ppm | \
+echo "Test 3. Should print: 0 0 : 0"
+ppmshift -seed=1 0 testimg.ppm | cmp -s - testimg.ppm
   echo ${PIPESTATUS[@]} ":" $?
 
 tmpdir=${tmpdir:-/tmp}
-test_pbm=${tmpdir}/test.pbm
+test0_ppm=${tmpdir}/test0.ppm
+test14_ppm=${tmpdir}/test14.ppm
 
-ppmshift -seed=2 14 testgrid.pbm > ${test_pbm}
+pgmtoppm < maze.pbm > ${test0_ppm}
 
-for i in 15 16 20 1000
-  do
-  echo "Test 4. ("$i") Should print: 0 : 0"
-  ppmshift -seed=2 $i testgrid.pbm > ${test_pbm} | cmp -s - testgrid.ppm | \
+echo "Test 4.  Should print: 0 0 : 0"
+  ppmshift -seed=2 0 maze.pbm | cmp -s - ${test0_ppm}
     echo ${PIPESTATUS[@]} ":" $?
+
+ppmshift -seed=2 14 maze.pbm > ${test14_ppm}
+
+for i in 1 15 16 20 1000
+  do
+  echo "Test 5. ("$i") Should print: 1 twice"
+  ppmshift -seed=2 $i maze.pbm | cmp -s - ${test0_ppm}
+    echo $?
+  ppmshift -seed=2 $i maze.pbm | cmp -s - ${test14_ppm}
+    echo $?
   done
 
-rm ${test_pbm}
\ No newline at end of file
+# In Test 5 the image files are not supposed to match.
+# When cmp finds a difference, it may terminate and stop reading input from
+# the pipe at that point.  This may cause a "broken pipe" exception; however
+# this does not always happen.  The broken pipe shows up as a non-zero value
+# for ${PIPESTATUS[0]}.
+
+rm ${test0_ppm} ${test14_ppm}
diff --git a/test/ppmspread.ok b/test/ppmspread.ok
index 7d44ab8e..40f44465 100755
--- a/test/ppmspread.ok
+++ b/test/ppmspread.ok
@@ -1,6 +1,12 @@
-Test 1. Should print 639729144 101484
+Test 1.
+stdin: PPM RAW 227 149 3 255 RGB
+stdin: PPM RAW 227 149 3 255 RGB
+Test 2.
+57 59
+57 59
+Test 3. Should print 281226646 481
+281226646 481
+Test 4. Should print 639729144 101484
 639729144 101484
-Test 2. Should print 3278353642 685
+Test 5. Should print 3278353642 685
 3278353642 685
-Test 3. Should print 2425386270 41
-2425386270 41
diff --git a/test/ppmspread.test b/test/ppmspread.test
index 871f7438..d7e0fb37 100755
--- a/test/ppmspread.test
+++ b/test/ppmspread.test
@@ -1,12 +1,28 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: ppmspread
-# Also requires: ppmtopgm pgmtopbm
+# Also requires: pamfile ppmtopgm pgmtopbm
 
-echo "Test 1. Should print 639729144 101484"
+# Input/output size does not change
+
+echo "Test 1."
+cat testimg.ppm | pamfile -machine
+ppmspread -randomseed=100 20 testimg.ppm | pamfile -machine
+
+echo "Test 2."
+pamfile -size maze.pbm
+ppmspread -randomseed=100 20 maze.pbm | pamfile -size
+
+# No change when spread distance value is 0
+
+echo "Test 3. Should print 281226646 481"
+ppmspread -randomseed=1 0 maze.pbm | ppmtopgm | pgmtopbm | cksum
+
+# The following tests will fail when changes are made to the random
+# number generator
+
+echo "Test 4. Should print 639729144 101484"
 ppmspread -randomseed=1 10 testimg.ppm | cksum
 
-echo "Test 2. Should print 3278353642 685"
+echo "Test 5. Should print 3278353642 685"
 ppmspread -randomseed=1 1 testgrid.pbm | cksum
 
-echo "Test 3. Should print 2425386270 41"
-ppmspread -randomseed=1 0 testgrid.pbm | ppmtopgm | pgmtopbm | cksum
diff --git a/test/sunicon-roundtrip.test b/test/sunicon-roundtrip.test
index c5b85909..38513ea8 100755
--- a/test/sunicon-roundtrip.test
+++ b/test/sunicon-roundtrip.test
@@ -1,27 +1,26 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pbmtosunicon sunicontopnm
-# Also requires: pamcut pnmpad
+# Also requires: pbmnoise
 
-# Width of Sun icons are multiples of 8.
-
-#imgsize=$(pamfile -size maze.pbm | awk '{print "-width="$1, "-height="$2}')
+# Width of a Sun icon is always a multiple of 8.
 
 tmpdir=${tmpdir:-/tmp}
 
-maze16_pbm=${tmpdir}/maze16.pbm
-maze32_pbm=${tmpdir}/maze32.pbm
-maze64_pbm=${tmpdir}/maze64.pbm
-
-pamcut -top=0 -left=0 -width=16 -height=16 maze.pbm > ${maze16_pbm} 
-pamcut -top=0 -left=0 -width=32 -height=32 maze.pbm > ${maze32_pbm} 
-pnmpad -width=64 -height=64 maze.pbm > ${maze64_pbm} 
+noise16_pbm=${tmpdir}/noise16.pbm
+noise32_pbm=${tmpdir}/noise32.pbm
+noise64_pbm=${tmpdir}/noise64.pbm
 
 echo "Test.  Should print 0 three times"
-pbmtosunicon ${maze16_pbm} | sunicontopnm | cmp -s - ${maze16_pbm}
-echo $?
-pbmtosunicon ${maze32_pbm} | sunicontopnm | cmp -s - ${maze32_pbm}
-echo $?
-pbmtosunicon ${maze64_pbm} | sunicontopnm | cmp -s - ${maze64_pbm}
-echo $?
+pbmnoise -randomseed=1 16 16 > ${noise16_pbm} && \
+  pbmtosunicon ${noise16_pbm} | sunicontopnm | cmp -s - ${noise16_pbm}
+  echo $?
+
+pbmnoise -randomseed=1 32 32 > ${noise32_pbm} && \
+  pbmtosunicon ${noise32_pbm} | sunicontopnm | cmp -s - ${noise32_pbm}
+  echo $?
+
+pbmnoise -randomseed=1 64 64 > ${noise64_pbm} && \
+  pbmtosunicon ${noise64_pbm} | sunicontopnm | cmp -s - ${noise64_pbm}
+  echo $?
 
-rm ${maze16_pbm} ${maze32_pbm} ${maze64_pbm}
\ No newline at end of file
+rm ${noise16_pbm} ${noise32_pbm} ${noise64_pbm}
\ No newline at end of file
diff --git a/test/symmetry.ok b/test/symmetry.ok
index a5945014..111f09cf 100644
--- a/test/symmetry.ok
+++ b/test/symmetry.ok
@@ -1,5 +1,8 @@
+Test 1.
 ok
+Test 2.
 ok
+Test 3.  Should print ok 7 times
 ok
 ok
 ok
@@ -7,7 +10,9 @@ ok
 ok
 ok
 ok
+Test 4.
 ok
+Test 5.  Should print ok 7 times.
 ok
 ok
 ok
@@ -15,4 +20,5 @@ ok
 ok
 ok
 ok
+Test 6.
 ok
diff --git a/test/symmetry.test b/test/symmetry.test
index 52ba6388..3c495778 100755
--- a/test/symmetry.test
+++ b/test/symmetry.test
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 # This script tests: pgmramp pamgauss pgmkernel pbmmake pbmpscale
 # Also requires: pamflip
 
@@ -25,7 +25,7 @@
 
 tmpdir=${tmpdir:-/tmp}
 
-# Test 1.
+echo "Test 1."
 rect_pgm=${tmpdir}/rect.pgm
 
 pgmramp -rect 31 31 > ${rect_pgm}
@@ -37,7 +37,8 @@ pgmramp -rect 31 31 > ${rect_pgm}
 
 rm ${rect_pgm}
 
-# Test 2.
+
+echo "Test 2."
 circle_pgm=${tmpdir}/circle.pgm
 pgmramp -ell 63 63 > ${circle_pgm}
 
@@ -48,7 +49,8 @@ pgmramp -ell 63 63 > ${circle_pgm}
 
 rm ${circle_pgm}
 
-# Test 3.  Should print "ok" 7 times
+
+echo "Test 3.  Should print ok 7 times"
 gauss_pgm=${tmpdir}/gauss.pgm
 for size in 3 4 5 8 13 21 25
 do
@@ -63,7 +65,7 @@ rm ${gauss_pgm}
 done
 
 
-# Test 4.
+echo "Test 4."
 kernel_pgm=${tmpdir}/kernel.pgm
 pgmkernel 15 15 > ${kernel_pgm}
 
@@ -74,12 +76,12 @@ pgmkernel 15 15 > ${kernel_pgm}
 
 rm ${kernel_pgm}
 
-# Test 5.
-# Should print "ok" 7 times.
+
+echo "Test 5.  Should print ok 7 times."
 pscale_pbm=${tmpdir}/pscale.pbm
-for size in `seq 1 7`
-do
-pbmmake -g 5 5 | pbmpscale $size > ${pscale_pbm}
+for size in 1 2 3 4 5 6 7  # for size in `seq 7`
+  do
+  pbmmake -g 5 5 | pbmpscale ${size} > ${pscale_pbm}
 
 ( for op in -null -tb -lr -r90
     do pamflip $op ${pscale_pbm} | cksum
@@ -89,7 +91,8 @@ pbmmake -g 5 5 | pbmpscale $size > ${pscale_pbm}
 rm ${pscale_pbm}
 done
 
-# Test 6.
+
+echo "Test 6."
 ell_pgm=${tmpdir}/ell.pgm
 pgmramp -ell 101 33 > ${ell_pgm}