Update the Long description for incus/network/forward/list to include…

… --column flag

Signed-off-by: HassanAlsamahi <hassanalsamahi12@gmail.com>

cmd/incus/network_forward.go

@@ -74,18 +74,40 @@ type cmdNetworkForwardList struct {
 	global         *cmdGlobal
 	networkForward *cmdNetworkForward
 
-	flagFormat string
+	flagFormat  string
+	flagColumns string
 }
 
 func (c *cmdNetworkForwardList) Command() *cobra.Command {
 	cmd := &cobra.Command{}
 	cmd.Use = usage("list", i18n.G("[<remote>:]<network>"))
 	cmd.Aliases = []string{"ls"}
 	cmd.Short = i18n.G("List available network forwards")
-	cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G("List available network forwards"))
+	cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
+		`List available network forwards
+
+Default column layout: ldDp
+
+== Columns ==
+The -c option takes a comma separated list of arguments that control
+which instance attributes to output when displaying in table or csv
+format.
+
+Column arguments are either pre-defined shorthand chars (see below),
+or (extended) config keys.
+
+Commas between consecutive shorthand chars are optional.
+
+Pre-defined column shorthand chars:
+l - Listen Address
+d - Description
+D - Default Target Address
+p - Port
+L - Location of the network zone (e.g. its cluster member)`))
 
 	cmd.RunE = c.Run
 	cmd.Flags().StringVarP(&c.flagFormat, "format", "f", "table", i18n.G("Format (csv|json|table|yaml|compact)")+"``")
+	cmd.Flags().StringVarP(&c.flagColumns, "columns", "c", defaultNetworkForwardColumns, i18n.G("Columns")+"``")
 
 	cmd.ValidArgsFunction = func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 		if len(args) == 0 {
@@ -98,6 +120,8 @@ func (c *cmdNetworkForwardList) Command() *cobra.Command {
 	return cmd
 }
 
+const defaultNetworkForwardColumns = "ldDp"
+
 func (c *cmdNetworkForwardList) Run(cmd *cobra.Command, args []string) error {
 	// Quick checks.
 	exit, err := c.global.CheckArgs(cmd, args, 1, 1)