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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2017-05-24 21:19:30 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2017-05-24 21:19:30 +0000 |
commit | 87e8c9cdeb23b734e837c89a8712ea3b2c71722a (patch) | |
tree | 6322d40f1be9721d8c60088e37e81f4224470126 /converter | |
parent | 875c6e889f19a7e8693c97ca0bf244fc51233692 (diff) | |
download | netpbm-mirror-87e8c9cdeb23b734e837c89a8712ea3b2c71722a.tar.gz netpbm-mirror-87e8c9cdeb23b734e837c89a8712ea3b2c71722a.tar.xz netpbm-mirror-87e8c9cdeb23b734e837c89a8712ea3b2c71722a.zip |
Get Perl interpreter from the PATH
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@2982 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'converter')
-rw-r--r-- | converter/pbm/pbmtox10bm | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/converter/pbm/pbmtox10bm b/converter/pbm/pbmtox10bm index 6e1a12a2..deb3aeab 100644 --- a/converter/pbm/pbmtox10bm +++ b/converter/pbm/pbmtox10bm @@ -1,3 +1,27 @@ +#!/bin/sh + +############################################################################## +# This is essentially a Perl program. We exec the Perl interpreter specifying +# this same file as the Perl program and use the -x option to cause the Perl +# interpreter to skip down to the Perl code. The reason we do this instead of +# just making /usr/bin/perl the script interpreter (instead of /bin/sh) is +# that the user may have multiple Perl interpreters and the one he wants to +# use is properly located in the PATH. The user's choice of Perl interpreter +# may be crucial, such as when the user also has a PERL5LIB environment +# variable and it selects modules that work with only a certain main +# interpreter program. +# +# An alternative some people use is to have /usr/bin/env as the script +# interpreter. We don't do that because we think the existence and +# compatibility of /bin/sh is more reliable. +# +# Note that we aren't concerned about efficiency because the user who needs +# high efficiency can use directly the programs that this program invokes. +# +############################################################################## + +exec perl -w -x -S -- "$0" "$@" + #! /usr/bin/perl #============================================================================ |