enable version subcmd and --version flag for root cmd and all subcmds

cmd/cmds.go

@@ -11,10 +11,11 @@ func init() {
 }
 
 var cmdsCmd = &cobra.Command{
-	Use:   "cmds",
-	Short: "Command runner management utility",
-	Long:  `Command runner management utility.`,
-	Args:  cobra.NoArgs,
+	Use:     "cmds",
+	Version: rootCmd.Version,
+	Short:   "Command runner management utility",
+	Long:    `Command runner management utility.`,
+	Args:    cobra.NoArgs,
 }
 
 func printEvents(m map[string][]string) {

cmd/config.go

@@ -20,10 +20,11 @@ func init() {
 }
 
 var configCmd = &cobra.Command{
-	Use:   "config",
-	Short: "Configuration management utility",
-	Long:  `Configuration management utility.`,
-	Args:  cobra.NoArgs,
+	Use:     "config",
+	Version: rootCmd.Version,
+	Short:   "Configuration management utility",
+	Long:    `Configuration management utility.`,
+	Args:    cobra.NoArgs,
 }
 
 func addConfigFlags(flags *pflag.FlagSet) {

cmd/hash.go

@@ -12,10 +12,11 @@ func init() {
 }
 
 var hashCmd = &cobra.Command{
-	Use:   "hash <password>",
-	Short: "Hashes a password",
-	Long:  `Hashes a password using bcrypt algorithm.`,
-	Args:  cobra.ExactArgs(1),
+	Use:     "hash <password>",
+	Version: rootCmd.Version,
+	Short:   "Hashes a password",
+	Long:    `Hashes a password using bcrypt algorithm.`,
+	Args:    cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		pwd, err := users.HashPwd(args[0])
 		checkErr(err)

cmd/root.go

@@ -16,7 +16,8 @@ import (
 	"github.com/filebrowser/filebrowser/v2/settings"
 	"github.com/filebrowser/filebrowser/v2/storage"
 	"github.com/filebrowser/filebrowser/v2/users"
-	"github.com/mitchellh/go-homedir"
+	"github.com/filebrowser/filebrowser/v2/version"
+	homedir "github.com/mitchellh/go-homedir"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	v "github.com/spf13/viper"
@@ -29,6 +30,9 @@ var (
 
 func init() {
 	cobra.OnInitialize(initConfig)
+
+	rootCmd.SetVersionTemplate("File Browser version {{printf \"%s\" .Version}}\n")
+
 	flags := rootCmd.Flags()
 	persistent := rootCmd.PersistentFlags()
 
@@ -87,12 +91,13 @@ func mustGetStringViperFlag(flags *pflag.FlagSet, key string) string {
 }
 
 var rootCmd = &cobra.Command{
-	Use:   "filebrowser",
-	Short: "A stylish web-based file browser",
+	Use:     "filebrowser",
+	Short:   "A stylish web-based file browser",
+	Version: version.Version,
 	Long: `File Browser CLI lets you create the database to use with File Browser,
 manage your users and all the configurations without acessing the
 web interface.
-	
+
 If you've never run File Browser, you'll need to have a database for
 it. Don't worry: you don't need to setup a separate database server.
 We're using Bolt DB which is a single file database and all managed

cmd/rules.go

@@ -18,8 +18,9 @@ func init() {
 }
 
 var rulesCmd = &cobra.Command{
-	Use:   "rules",
-	Short: "Rules management utility",
+	Use:     "rules",
+	Version: rootCmd.Version,
+	Short:   "Rules management utility",
 	Long: `On each subcommand you'll have available at least two flags:
 "username" and "id". You must either set only one of them
 or none. If you set one of them, the command will apply to

cmd/upgrade.go

@@ -14,8 +14,9 @@ func init() {
 }
 
 var upgradeCmd = &cobra.Command{
-	Use:   "upgrade",
-	Short: "Upgrades an old configuration",
+	Use:     "upgrade",
+	Version: rootCmd.Version,
+	Short:   "Upgrades an old configuration",
 	Long: `Upgrades an old configuration. This command DOES NOT
 import share links because they are incompatible with
 this version.`,

cmd/users.go

@@ -18,10 +18,11 @@ func init() {
 }
 
 var usersCmd = &cobra.Command{
-	Use:   "users",
-	Short: "Users management utility",
-	Long:  `Users management utility.`,
-	Args:  cobra.NoArgs,
+	Use:     "users",
+	Version: rootCmd.Version,
+	Short:   "Users management utility",
+	Long:    `Users management utility.`,
+	Args:    cobra.NoArgs,
 }
 
 func printUsers(users []*users.User) {

cmd/version.go

@@ -1,20 +1,32 @@
 package cmd
 
 import (
-	"fmt"
+	"text/template"
 
-	"github.com/filebrowser/filebrowser/v2/version"
 	"github.com/spf13/cobra"
 )
 
 func init() {
 	rootCmd.AddCommand(versionCmd)
+	cmdsCmd.AddCommand(versionCmd)
+	configCmd.AddCommand(versionCmd)
+	hashCmd.AddCommand(versionCmd)
+	upgradeCmd.AddCommand(versionCmd)
+	rulesCmd.AddCommand(versionCmd)
+	usersCmd.AddCommand(versionCmd)
 }
 
 var versionCmd = &cobra.Command{
 	Use:   "version",
-	Short: "Print the version number",
+	Short: "Print the version number of File Browser",
+	Long:  `All software has versions. This is File Browser's`,
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("File Browser Version " + version.Version)
+		// https://github.com/spf13/cobra/issues/724
+		t := template.New("version")
+		template.Must(t.Parse(rootCmd.VersionTemplate()))
+		err := t.Execute(rootCmd.OutOrStdout(), rootCmd)
+		if err != nil {
+			rootCmd.Println(err)
+		}
 	},
 }