37 lines
671 B
Bash
Executable File
37 lines
671 B
Bash
Executable File
#! /bin/sh
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# $Id: which 12 2007-02-18 03:31:14Z sfsetse $
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#
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# This is a simple implementation of the 'which' command for those OSes that
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# don't have one.
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#
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true; TRUE=$?
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false; FALSE=$?
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showAll=${FALSE}
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# process command line flags
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while getopts 'a' opt; do
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case ${opt} in
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a) showAll=${TRUE}
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esac
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done
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shift `expr ${OPTIND} - 1`
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# exit if no arguments were given
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[ $# -eq 0 ] && exit 1
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command=$1
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# search for command
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out=`echo "${PATH}" |sed "s/:/\n/g" |\
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while read path; do
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fullPath="${path}/${command}"
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if [ -x "${fullPath}" ]; then
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echo "${fullPath}"
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[ ${showAll} -eq ${FALSE} ] && break
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fi
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done`
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[ -z "${out}" ] && exit 1
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echo "${out}"
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