4 files changed, 78 insertions, 0 deletions
diff --git a/Completion/Unix/Command/.distfiles b/Completion/Unix/Command/.distfiles
index 15cb2d661..ec4ac3975 100644
--- a/Completion/Unix/Command/.distfiles
+++ b/Completion/Unix/Command/.distfiles
@@ -9,6 +9,7 @@ _apm
 _arp
 _arping
 _attr
+_awk
 _baz
 _bison
 _bittorrent
@@ -88,6 +89,7 @@ _irssi
 _ispell
 _java
 _joe
+_join
 _killall
 _knock
 _kvno
@@ -169,6 +171,7 @@ _showmount
 _sisu
 _slrn
 _socket
+_sort
 _spamassassin
 _sqsh
 _ssh
diff --git a/Completion/Unix/Command/_awk b/Completion/Unix/Command/_awk
new file mode 100644
index 000000000..da748e9be
--- /dev/null
+++ b/Completion/Unix/Command/_awk
@@ -0,0 +1,21 @@
+#compdef awk
+
+# completions for awk
+# This only aims to complete POSIX awk options, as described in
+# awk(P). Most awk implementations, such as gawk and mawk, will have
+# additional options that this does not complete. Also, currently
+# this completion does not allow everything that POSIX allows. For
+# example, awk(P) states that the user may specify assignments
+# without using the -v option; this does not support that.
+#
+# In addition, the "program text" completion is not perfect. For
+# instance, type "awk -" and then hit tab. You will be presented
+# both with the dashed options and with the "program text" option.
+# Fixing this is beyond my current _arguments expertise--help
+# appreciated.
+
+_arguments -S -s '-F[define input field separator to be an extended regular expression]:extended regular expression:' \
+    '*-v[assign values to variables]:assignment:' \
+    '(1)-f[program file]:program file:_files' \
+    '1:program text:' \
+    '*:input files:_files'
diff --git a/Completion/Unix/Command/_join b/Completion/Unix/Command/_join
new file mode 100644
index 000000000..956d9d3b8
--- /dev/null
+++ b/Completion/Unix/Command/_join
@@ -0,0 +1,23 @@
+#compdef join
+
+# completions for GNU join version 5.97
+
+local arguments
+
+arguments=(
+    '-a+[print unpairable lines coming from file FILENUM, where FILENUM is 1 or 2, corresponding to FILE1 or FILE2]:file number:(1 2)'
+    '-e+[replace missing input fields with EMPTY]:replacement string:'
+    '(-i --ignore-case)'{-i,--ignore-case}'[ignore differences in case when comparing fields]'
+    "-j+[equivalent to '-1 FIELD -2 FIELD']:field number:"
+    '-o+[obey FORMAT while constructing output line]:format string:'
+    '-t+[use CHAR as input and output field separator]:separator:'
+    '-v+[like -a FILENUM, but suppress joined output lines]:file number:(1 2)'
+    '-1+[join on this FIELD of file 1]:field number:'
+    '-2+[join on this FIELD of file 2]:field number:'
+    --help'[display help and exit]'
+    --version'[output version information and exit]'
+    '1:file 1:_files'
+    '2:file 2:_files'
+    )
+
+_arguments -s $arguments
diff --git a/Completion/Unix/Command/_sort b/Completion/Unix/Command/_sort
new file mode 100644
index 000000000..1ea5a6e40
--- /dev/null
+++ b/Completion/Unix/Command/_sort
@@ -0,0 +1,31 @@
+#compdef sort
+
+# zsh completions for GNU sort version 5.97
+# limitation: --key does not work exactly right
+local arguments
+
+arguments=(
+    '(-b --ignore-leading-blanks)'{-b,--ignore-leading-blanks}'[ignore leading blanks]'
+    '(-d --dictionary-order)'{-d,--dictionary-order}'[consider only blanks and alphanumeric characters]'
+    '(-f --ignore-case)'{-f,--ignore-case}'[fold lower case to upper case characters]'
+    '(-g --general-numeric-sort)'{-g,--general-numeric-sort}'[compare according to general numeric value]'
+    '(-i --ignore-nonprinting)'{-i,--ignore-nonprinting}'[consider only printable characters]'
+    '(-M --month-sort)'{-M,--month-sort}"[compare (unknown) < 'JAN' < ... < 'DEC']"
+    '(-n --numeric-sort)'{-n,--numeric-sort}'[compare according to string numerical value]'
+    '(-r --reverse)'{-r,--reverse}'[reverse the result of comparisons]'
+    '(-c --check)'{-c,--check}'[check whether input is sorted; do not sort]'
+    '(-k --key)'{-k+,--key=}'[start a key at POS1, end it as POS2 (origin 1)]:key:'
+    '(-m --merge)'{-m,--merge}'[merge already sorted files; do not sort]'
+    '(-o --output)'{-o+,--output=}'[write result to FILE instead of standard output]:filename:_files'
+    '(-s --stable)'{-s+,--stable=}'[stabilize sort by disabling last-resort comparison]'
+    '(-S --buffer-size)'{-S+,--buffer-size=}'[use SIZE for main memory buffer]:size:'
+    '(-t --field-separator)'{-t+,--field-separator=}'[use SEP instead of non-blank to blank transition]:separator:'
+    '(-T --temporary-directory)'{-T+,--temporary-directory=}'[use DIR for temporaries, not $TMPDIR or /tmp; multiple options specify multiple directories]:directory'
+    '(-u --unique)'{-u,--unique}'[with -c, check for strict ordering; without -c, output only the first of an equal run]'
+    '(-z --zero-terminated)'{-z,--zero-terminated}'[end lines with 0 byte, not newline]'
+    --help'[display help and exit]'
+    --version'[output version information and exit]'
+    '*:filename:_files'
+    )
+
+_arguments -s $arguments