#!/bin/sh -u
#   $0 pathname
# Tells whether a pathname is a file or directory.
# Lists the contents of a directory; word counts a file.
# -IAN! idallen@ncf.ca    June 2001

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

# Make sure we have exactly one argument to this script.
#
if [ $# -ne 1 ]; then
	echo 1>&2 "$0: Expecting exactly one argument; found $#"
	exit 1
fi

# Test to see if the pathname is a directory.
# List the contents and then exit, if it is.
#
if [ -d "$1" ]; then
	echo "'$1' is a directory"
	ls "$1" || exit $?
	exit 0
fi

# Test to see if the pathname is a file.
# Get a word count of lines and then exit, if it is.
#
if [ -f "$1" ]; then
	echo "'$1' is a file"
	lines=$(wc -l <"$1") || exit $?
	echo "It contains $lines lines"
	exit 0
fi

# Argument is not a file or directory - print an error message.
# Exit with some non-zero return status.
#
echo 1>&2 "$0: '$1' is not a file or directory"
exit 3