#! /bin/sh
#
###	whereiz - find full pathnames of command(s) in your $PATH
###	Usage: whereiz command [commands...]
##
##  whereiz LOOKS IN EACH DIRECTORY IN YOUR $PATH (COMMAND SEARCH PATH)
##  FOR EXECUTABLE FILE(S) WHOSE NAME(S) YOU SPECIFY.  IF IT FINDS THE
##  FILE, IT RETURNS THE FILE'S FULL PATHNAME.  IF IT DOESN'T, whereiz
##  RETURNS NOTHING.

# COMMAND THAT TESTS FOR EXECUTABLE FILES... EITHER "test -x" or "testx":
testx="test -x"

# REPLACE NULL FIELD IN $PATH WITH A .:
fixpath="`echo $PATH | sed \
	-e 's/^:/.:/' \
	-e 's/::/:.:/g' \
	-e 's/:$/:./'`"

IFS=": 	"		# SET $IFS (COLON, SPACE, TAB) FOR PARSING $PATH
for command
do
	where=""			# ZERO OUT $where

	# IF DIRECTORY HAS EXECUTABLE FILE, ADD IT TO LIST:	
	for direc in $fixpath
	do $testx $direc/$command && where="$where $direc/$command"	
	done
	
	case "$where" in
	?*)	echo $where	;;	# IF CONTAINS SOMETHING, OUTPUT IT
	esac
done