[mike@mwxm4]

commands.go

@@ -196,6 +196,15 @@ func runCommandDepth(line string, depth int) bool {
 		}
 		showConfig()
 
+	case "update": // replace this binary with the newest release (-c: only look)
+		run := selfUpdate.install
+		if opt["c"] {
+			run = selfUpdate.check
+		}
+		if err := run(os.Stdout); err != nil {
+			errorln("update: " + err.Error())
+		}
+
 	case "rescan": // reload the configuration and the cached server repo list
 		reloadConfig()
 		rescanServer()
@@ -802,6 +811,7 @@ var helpItems = []struct{ cmd, desc string }{
 	{"unalias <name>", "remove an alias"},
 	{"config [-k]", "show effective configuration (-k: list all setting names)"},
 	{"rescan", "reload config and refresh cached server repository list"},
+	{"update [-c]", "update mgsh to the newest release (-c: only look)"},
 	{"!<command>", "run <command> in the shell"},
 	{"quit", "exit mgsh"},
 }