case $# in
 1) ;;
 *) exit 1 ;;
esac

HOSTNAME=$1
FLAG=OKOKOKOKOKOKOKOKOKOKOKOKOK
TMP=/tmp/temp$$
HOSTFILE=/etc/hosts

case $HOSTNAME in
 "") exit 1 ;;
esac

if test -f $HOSTFILE
then
	:
else
	exit 1
fi

sed -e "
/^#/d
/^:/d
/^[ 	]*#/d
/^[ 	]*:/d
/^$/d
s/#.*//
s/:.*//
s/[ 	]$HOSTNAME[ 	]/$FLAG/
s/[ 	]$HOSTNAME$/$FLAG/
" < $HOSTFILE > $TMP

if grep "$FLAG" $TMP > /dev/null 2>&1
then
	rm -fr $TMP
	exit 0
else
	rm -fr $TMP
	exit 1
fi

