#!/bin/sh

opath=$PATH
PATH=/bin:/usr/bin

case $# in 
0)	echo 'Usage: wi command' 1>&2; exit 1
esac

found=0
for i in `echo $opath | sed 's/^:/.:/
s/::/:.:/g
s/:$/:./
s/:/ /g'`
do
    if [ -f $i/$1 ]
    then
        echo $i/$1
        found=1
    fi
done

if [ $found -eq 0 ]
then
echo "Not found $1 in path." 1>&2
exit 1
fi