#!/bin/sh -u
#
#     $0 [ pathnames... ]
#
# A script that identifies empty files, given on the command line.
# Non-files, including non-existent pathnames, are skipped over and
# are not processed.
#
# WARNING: Many of the comments in this file are "Instructor-Type"
#   comments and are *not* appropriate for real scripts.  Do not put
#   "Instructor-Type" comments into the scripts that you submit for marking.
#   I put them in my example files because I am teaching you how to
#   write scripts; do not submit my teaching comments back to me again.
#   Read the week7.txt notes for more details on good comment style.
#
# -IAN! idallen@ncf.ca  June 2001

# All scripts must start with lines similar to these two:
#
export PATH=/bin:/usr/bin
umask 022

# This uses the abbreviated for loop that defaults to using "$@" as
# the list of words.
#
for pathname do
	# We only process existing files and ignore otherwise.
	if [ -f "$pathname" ]; then
		if [ -s "$pathname" ]; then
			echo "'$pathname' is not empty"
		else
			echo "'$pathname' is empty"
		fi
	else
		echo "'$pathname' is not an existing file (ignored)"
	fi
done

exit 0