if [ $# -eq 1 ]
then
	if [ -s /usr/man/1.$1 ]
	then
		cat /usr/man/1.$1
		exit 0
	else
		echo "$0: cannot find /usr/man/1.$1" >&2
		exit 1
	fi
fi
echo "Usage: $0 command_name

Only one command name may be specified.  This is not a full
implementation of the man command as this machine does not
have many manual pages.  For a list of manual pages available,
list the /usr/man directory" >&2
exit 2