change a if elif elif elif else by a case

vm-start.sh

@@ -240,39 +240,40 @@ then
 fi
 
 
-if [ "$2" == "start" ]
-then
-    echo "starting VM $1"
-    START
-elif [ "$2" == "start-backup" ]
-then
-    echo "starting VM rescue"
-    START_BACKUP
-elif [ "$2" == "backup" ]
-then
-    echo "backup VM"
-    BACKUP
-elif [ "$2" == "restore" ]
-then
-    echo "restore VM"
-    RESTORE
-elif [ "$2" == "create" ]
-then
-    echo "creating VM"
-    if [ $# -ge 3 ]
-    then
-        echo "using image disk $3" # Error here, please don't think that there will be only three devices, should be improve like with an install-device parametter.
-        CREATE "$3" # TODO
-    else
-        echo "$#"
-        echo "Error, no image defined." >&2
-    fi
-elif [ "$2" == "suppr" ]
-then
-    echo "suppressing all data of the vm $1"
-    SUPPRESS "$1"
-else
-    echo "commande $2 inconnue" >&2
-    HELP
-fi
+case "$2" in
+    "start")
+        echo "starting VM $1"
+        START
+        ;;
+    "start-backup")
+        echo "starting VM rescue"
+        START_BACKUP
+        ;;
+    "backup")
+        echo "backup VM"
+        BACKUP
+        ;;
+    "restore")
+        echo "restore backup"
+        RESTORE
+        ;;
+    "create")
+        echo "creating VM"
+        if [ $# -ge 3 ]
+        then
+            echo "using image disk $3"
+            CREATE "$3"
+        else
+            echo "$#"
+            echo "Error, no image defined." >&2
+        fi
+        ;;
+    "suppr")
+        echo "suppressing all data of the vm $1"
+        SUPPRESS "$1"
+        ;;
+    "*")
+        echo "commande $2 inconnue" >&2
+        HELP
+esac