# get subcommand
COMMAND="$1"
-[ "$COMMAND" ] || $PGRM help
+[ "$COMMAND" ] || (usage; exit 1)
shift
case $COMMAND in
keys_from_userid "$@"
;;
- 'version'|'v')
+ 'version'|'--version'|'v')
version
;;
- '--help'|'help'|'-h'|'h'|'?')
+ 'help'|'--help'|'-h'|'h'|'?')
usage
;;