#!/bin/sh -u
#  $0 [ arg1 [ arg2 [arg3] ] ]
#    With no arguments, display:   PWD   PATH   HOME
#    With 1 argument, display:     arg1  PATH   HOME
#    With 2 arguments, display:    arg1  arg2   HOME
#    With 3 arguments, display:    arg1  arg2   arg3
# -IAN! idallen@ncf.ca

# Save the user's path before modifying it for use in this script.
#
savepath="$PATH"

export PATH=/bin:/usr/bin
umask 022

if [ $# -gt 3 ] ; then
	echo 1>&2 "$0: Expecting 0-3 args; found $# ($*)"
	exit 1
fi

# Set the initial values of the three variables.
# Use the saved version of $PATH from above.
#
arg1="$PWD"
arg2="$savepath"
arg3="$HOME"

# Change the variables depending on the number of arguments.
#
if [ $# -ge 1 ] ; then
	arg1="$1"
fi
if [ $# -ge 2 ] ; then
	arg2="$2"
fi
if [ $# -ge 3 ] ; then
	arg3="$3"
fi

echo "$arg1    $arg2    $arg3"