headlessvnc : ajout option pour montrer le message d'aide

bin/headlessvnc

@@ -3,6 +3,17 @@ perror() {
   >&2 printf '\033[1;31mERROR:\033[0m \033[1m%s\033[0m\n' "$*"
 }
 
+usage() {
+  name=$(basename "$0")
+
+  cat << EOF
+${name}: usage
+  ${name} [status] - show if the server is running
+  ${name} start|stop|restart - control the server
+  ${name} help|usage - show help
+EOF
+}
+
 error_usage() {
   perror "invalid usage"
   >&2 usage
@@ -46,13 +57,14 @@ status() {
 }
 
 case "$1" in
-  ""|status) status ;;
-  start) start ;;
-  stop)  stop  ;;
-  restart)
+  ""|stat*) status ;;
+  star*) start ;;
+  sto*)  stop  ;;
+  r*)
     stop
     start
     ;;
+  h*|u*) usage ;;
   *)
     error_usage
     ;;