diff --git a/cmd/root.go b/cmd/root.go
index a117a82..c8ae6fa 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	gVersion = "0.32a"
+	gVersion = "0.33a"
 	
 	// TODO : Get from $jail_zpool/defaults.json
 	MIN_DYN_DEVFS_RULESET = 1000
@@ -134,7 +134,7 @@ ex: gocage list srv-db srv-web`,
 			} else {
 				StartJail(args)
 			}
-			WriteConfigToDisk(false)
+			WriteConfigToDisk("", false, false)
 		},
 	}
 	
@@ -148,7 +148,7 @@ ex: gocage list srv-db srv-web`,
 			ListJails(args, false)
 			StopJail(args)
 			StartJail(args)
-			WriteConfigToDisk(false)
+			WriteConfigToDisk("", false, false)
 		},
 	}
 	
@@ -171,7 +171,7 @@ Multiples properties can be specified, separated with space (Ex: gocage set allo
 			// Load inventory
 			ListJails(args, false)
 			SetJailProperties(args)
-			WriteConfigToDisk(true)
+			WriteConfigToDisk("", true, false)
 		},
 	}
 
@@ -253,7 +253,7 @@ You can specify multiple jails.`,
 			// Load inventory
 			ListJails(args, false)
 			MigrateJail(args)
-			WriteConfigToDisk(false)
+			WriteConfigToDisk("", false, false)
 		},
 	}
 
@@ -303,6 +303,15 @@ You can specify multiple datastores.`,
 	 },
 	}
 	
+	UpdateCmd = &cobra.Command{
+		Use:   "update",
+	 Short: "Update FreeBSD release",
+	 Run: func(cmd *cobra.Command, args []string) {
+		 ListJails(args, false)
+		 UpdateJail(args)
+	 },
+	}
+	
 	testCmd = &cobra.Command{
 		Use:   "test",
 		Short: "temporary command to test some code snippet",
@@ -378,6 +387,7 @@ func init() {
 	rootCmd.AddCommand(migrateCmd)
 	rootCmd.AddCommand(datastoreCmd)
 	rootCmd.AddCommand(fetchCmd)
+	rootCmd.AddCommand(UpdateCmd)
 	
 	rootCmd.AddCommand(testCmd)
 	
@@ -461,59 +471,68 @@ func initConfig() {
 }
 
 /********************************************************************************
- * Write jails config which been updated to disk.
+ * Write jail(s) config which been updated to disk.
+ * If name is specified, work on the jail. If name is empty string, work on all.
  * If changeauto not set, values which are in "auto" mode on disk
  *  won't be overwritten (p.ex defaultrouter wont be overwritten with current
  *  default route, so if route change on jailhost this will reflect on jail next
  *  start)
  *******************************************************************************/
-func WriteConfigToDisk(changeauto bool) {
+func WriteConfigToDisk(jailName string, changeauto bool, forceWrite bool) {
 	for _, j := range gJails {
-		if j.ConfigUpdated {
-			//log.Debug("%s config has changed, write changes to disk\n", j.Name)
+		if len(jailName) > 0 && j.Name == jailName || len(jailName) == 0 {
+			if j.ConfigUpdated || forceWrite {
+				log.Debug("%s config has changed, write changes to disk\n", j.Name)
 
-			// we will manipulate properties so get a copy
-			jc := j.Config
+				// we will manipulate properties so get a copy
+				jc := j.Config
 
-			if changeauto == false {
-				// Overwrite "auto" properties
-				ondiskjc, err := getJailConfig(j.ConfigPath)
-				if err != nil {
-					panic(err)
-				}
-				// TODO : List all fields, then call getStructFieldValue to compare value with "auto"
-				// If "auto" then keep it that way before writing ondiskjc to disk
-				var properties []string
-				properties = getStructFieldNames(ondiskjc, properties, "")
-
-				for _, p := range properties {
-					v, _, err := getStructFieldValue(ondiskjc, p)
+				if changeauto == false {
+					// Overwrite "auto" properties
+					ondiskjc, err := getJailConfig(j.ConfigPath)
 					if err != nil {
 						panic(err)
 					}
-					if v.String() == "auto" {
-						err = setStructFieldValue(&jc, p, "auto")
+					// TODO : List all fields, then call getStructFieldValue to compare value with "auto"
+					// If "auto" then keep it that way before writing ondiskjc to disk
+					var properties []string
+					properties = getStructFieldNames(ondiskjc, properties, "")
+
+					for _, p := range properties {
+						v, _, err := getStructFieldValue(ondiskjc, p)
 						if err != nil {
-							fmt.Printf("ERROR sanitizing config: %s\n", err.Error())
-							os.Exit(1)
+							panic(err)
+						}
+						if v.String() == "auto" {
+							err = setStructFieldValue(&jc, p, "auto")
+							if err != nil {
+								fmt.Printf("ERROR sanitizing config: %s\n", err.Error())
+								os.Exit(1)
+							}
 						}
 					}
 				}
-			}
 
-			marshaled, err := json.MarshalIndent(jc, "", "    ")
-			if err != nil {
-				fmt.Printf("ERROR marshaling config: %s\n", err.Error())
-			}
-			//fmt.Printf(string(marshaled))
-			if os.WriteFile(j.ConfigPath, []byte(marshaled), 0644); err != nil {
-				fmt.Printf("Error writing config file %s: %v\n", j.ConfigPath, err)
-				os.Exit(1)
+				marshaled, err := json.MarshalIndent(jc, "", "    ")
+				if err != nil {
+					fmt.Printf("ERROR marshaling config: %s\n", err.Error())
+				}
+				
+				fmt.Printf("DEBUG: Will write config to disk, with content:\n")
+				fmt.Printf(string(marshaled))
+				
+				
+				
+				if os.WriteFile(j.ConfigPath, []byte(marshaled), 0644); err != nil {
+					fmt.Printf("Error writing config file %s: %v\n", j.ConfigPath, err)
+					os.Exit(1)
+				}
 			}
 		}
 	}
 }
 
+
 func Execute() {
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Fprintln(os.Stderr, err)