# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+usage() {
+ cat <<EOF
+Usage: ${0##*/} HOSTNAME
+EOF
+ exit $1
+}
+
set -x
set -eE -o pipefail
if [[ ! $1 ]]; then
echo "error: expect a hostname in \$1 "
- exit 1
+ usage 1
fi
host=$1