pwhich

   1 #! /bin/sh -e
   2
   3 RET=1
   4 for PROGRAM in "$@"; do
   5  IFS_SAVE="$IFS"
   6  IFS=:
   7  for ELEMENT in $PATH; do
   8   if [ -f "$ELEMENT/$PROGRAM" ] && [ -x "$ELEMENT/$PROGRAM" ]; then
   9    echo "$ELEMENT/$PROGRAM"
  10    RET=0
  11    break
  12   fi
  13  done
  14  IFS="$IFS_SAVE"
  15 done
  16
  17 exit "$RET"