117 lines
2.4 KiB
Text
117 lines
2.4 KiB
Text
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#!/bin/sh
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# Look for program[s] somewhere in $PATH.
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#
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# Options:
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# -s
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# Do not print out full pathname. (silent)
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# -pPATHNAME
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# Look in PATHNAME instead of $PATH
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#
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# Usage:
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# PrintPath [-s] [-pPATHNAME] program [program ...]
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#
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# Initially written by Jim Jagielski for the Apache configuration mechanism
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# (with kudos to Kernighan/Pike)
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#
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# This script falls under the Apache License.
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# See http://www.apache.org/licenses/LICENSE
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##
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# Some "constants"
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##
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pathname=$PATH
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echo="yes"
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##
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# Find out what OS we are running for later on
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##
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os=`(uname) 2>/dev/null`
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##
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# Parse command line
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##
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for args in $*
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do
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case $args in
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-s ) echo="no" ;;
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-p* ) pathname="`echo $args | sed 's/^..//'`" ;;
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* ) programs="$programs $args" ;;
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esac
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done
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##
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# Now we make the adjustments required for OS/2 and everyone
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# else :)
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#
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# First of all, all OS/2 programs have the '.exe' extension.
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# Next, we adjust PATH (or what was given to us as PATH) to
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# be whitespace separated directories.
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# Finally, we try to determine the best flag to use for
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# test/[] to look for an executable file. OS/2 just has '-r'
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# but with other OSs, we do some funny stuff to check to see
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# if test/[] knows about -x, which is the preferred flag.
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##
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if [ "x$os" = "xOS/2" ]
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then
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ext=".exe"
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pathname=`echo -E $pathname |
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sed 's/^;/.;/
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s/;;/;.;/g
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s/;$/;./
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s/;/ /g
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s/\\\\/\\//g' `
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test_exec_flag="-r"
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else
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ext="" # No default extensions
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pathname=`echo $pathname |
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sed 's/^:/.:/
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s/::/:.:/g
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s/:$/:./
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s/:/ /g' `
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# Here is how we test to see if test/[] can handle -x
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testfile="pp.t.$$"
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cat > $testfile <<ENDTEST
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#!/bin/sh
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if [ -x / ] || [ -x /bin ] || [ -x /bin/ls ]; then
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exit 0
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fi
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exit 1
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ENDTEST
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if `/bin/sh $testfile 2>/dev/null`; then
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test_exec_flag="-x"
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else
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test_exec_flag="-r"
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fi
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rm -f $testfile
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fi
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for program in $programs
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do
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for path in $pathname
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do
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if [ $test_exec_flag $path/${program}${ext} ] && \
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[ ! -d $path/${program}${ext} ]; then
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if [ "x$echo" = "xyes" ]; then
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echo $path/${program}${ext}
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fi
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exit 0
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fi
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# Next try without extension (if one was used above)
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if [ "x$ext" != "x" ]; then
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if [ $test_exec_flag $path/${program} ] && \
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[ ! -d $path/${program} ]; then
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if [ "x$echo" = "xyes" ]; then
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echo $path/${program}
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fi
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exit 0
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fi
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fi
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done
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done
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exit 1
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