Version flag; close #175; improve error logging

Fix #175

improve error logging

build assets


Former-commit-id: c0feee879514a18dabe649368ac16895acf71f5a [formerly 644474964c42dc7ac3684059baa72d4f974c3fc1] [formerly df7e47d330f713c717f04a66430c895dce6933e4 [formerly 24dbcb87ba]]
Former-commit-id: d864fca67e2c39ea0dd94a61ee89515de700284d [formerly fc3cba4628faaef6ae99562b7b236e82ccf20589]
Former-commit-id: dd20e74775af0e4e2232a2fda3dd1bba169ce165

cmd/filemanager/main.go

@@ -32,6 +32,8 @@ var (
 	allowCommands bool
 	allowEdit     bool
 	allowNew      bool
+	showVer       bool
+	version       = "master"
 )
 
 func init() {
@@ -46,6 +48,7 @@ func init() {
 	flag.BoolVar(&allowEdit, "allow-edit", true, "Default allow edit option for new users")
 	flag.BoolVar(&allowNew, "allow-new", true, "Default allow new option for new users")
 	flag.StringVar(&plugin, "plugin", "", "Plugin you want to enable")
+	flag.BoolVarP(&showVer, "version", "v", false, "Show version")
 }
 
 func setupViper() {
@@ -79,6 +82,11 @@ func main() {
 	setupViper()
 	flag.Parse()
 
+	if showVer {
+		fmt.Println("filemanager version", version)
+		os.Exit(0)
+	}
+
 	// Add a configuration file if set.
 	if config != "" {
 		ext := filepath.Ext(config)