44 lines
852 B
Text
44 lines
852 B
Text
#
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# which - emulation of `which' as it appears in FreeBSD
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#
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# usage: which [-as] command [command...]
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#
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which()
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{
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local aflag sflag ES a
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OPTIND=1
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while builtin getopts as opt ; do
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case "$opt" in
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a) aflag=-a ;;
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s) sflag=1 ;;
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?) echo "which: usage: which [-as] command [command ...]" >&2
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exit 2 ;;
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esac
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done
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(( $OPTIND > 1 )) && shift $(( $OPTIND - 1 ))
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# without command arguments, exit with status 1
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ES=1
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# exit status is 0 if all commands are found, 1 if any are not found
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for command; do
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# if $command is a function, make sure we add -a so type
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# will look in $PATH after finding the function
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a=$aflag
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case "$(builtin type -t $command)" in
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"function") a=-a;;
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esac
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if [ -n "$sflag" ]; then
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builtin type -p $a $command >/dev/null 2>&1
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else
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builtin type -p $a $command
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fi
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ES=$?
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done
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return $ES
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}
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