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|
: Use /bin/sh
#
# $Id: iwhich,v 1.2 1995/10/11 02:31:58 geoff Exp $
#
# Report which version of a command is in use. This version of
# "which" doesn't handle shell aliases, but it makes up for that with
# the "-a" (report all copies) switch and the fact that it returns a
# nonzero shell status if the command isn't found.
#
USAGE='Usage: which [-a] command[s]'
#
# For each command, the full pathname of the version that will be
# selected from $PATH is reported. If the -a switch is given,
# versions in $PATH that are overridden by earlier $PATH entries will
# also be reported. The exit status is nonzero if none of the
# commands are found anywhere in $PATH.
#
# $Log: iwhich,v $
# Revision 1.2 1995/10/11 02:31:58 geoff
# Work around a buggy version of Ultrix test
#
# Revision 1.1 1995/01/15 00:13:54 geoff
# Initial revision
#
#
opath=$PATH
PATH=/bin:/usr/bin
all=no
while [ $# -gt 0 ]
do
case "$1" in
-a)
all=yes
shift
;;
-*)
echo "$USAGE" 1>&2
exit 2
;;
*)
break
;;
esac
done
case $# in
0)
echo "$USAGE" 1>&2
exit 2
;;
esac
opath=`echo "$opath" | sed 's/^:/.:/
s/::/:.:/g
s/:$/:./
s/:/ /g'`
found=false
for file
do
for i in $opath
do
if [ \( -x $i/$file \) -a \( ! -d $i/$file \) ]
then
echo $i/$file
found=true
case "$all" in
no)
break
;;
esac
fi
done
done
if $found
then
exit 0
else
exit 1
fi
|
