cmd/tailscale/cli: prefix all --help usages with "tailscale ...", some tidying

Also capitalises the start of all ShortHelp, allows subcommands to be hidden
with a "HIDDEN: " prefix in their ShortHelp, and adds a TS_DUMP_HELP envknob
to look at all --help messages together.

Fixes #11664

Signed-off-by: Paul Scott <paul@tailscale.com>

cmd/tailscale/cli/bugreport.go

@@ -17,7 +17,7 @@ var bugReportCmd = &ffcli.Command{
 	Name:       "bugreport",
 	Exec:       runBugReport,
 	ShortHelp:  "Print a shareable identifier to help diagnose issues",
-	ShortUsage: "bugreport [note]",
+	ShortUsage: "tailscale bugreport [note]",
 	FlagSet: (func() *flag.FlagSet {
 		fs := newFlagSet("bugreport")
 		fs.BoolVar(&bugReportArgs.diagnose, "diagnose", false, "run additional in-depth checks")

cmd/tailscale/cli/cert.go

@@ -28,7 +28,7 @@ var certCmd = &ffcli.Command{
 	Name:       "cert",
 	Exec:       runCert,
 	ShortHelp:  "Get TLS certs",
-	ShortUsage: "cert [flags] <domain>",
+	ShortUsage: "tailscale cert [flags] <domain>",
 	FlagSet: (func() *flag.FlagSet {
 		fs := newFlagSet("cert")
 		fs.StringVar(&certArgs.certFile, "cert-file", "", "output cert file or \"-\" for stdout; defaults to DOMAIN.crt if --cert-file and --key-file are both unset")

cmd/tailscale/cli/cli.go

@@ -14,7 +14,6 @@ import (
 	"log"
 	"os"
 	"runtime"
-	"slices"
 	"strings"
 	"sync"
 	"text/tabwriter"
@@ -95,6 +94,49 @@ func Run(args []string) (err error) {
 		})
 	})
 
+	rootCmd := newRootCmd()
+	if err := rootCmd.Parse(args); err != nil {
+		if errors.Is(err, flag.ErrHelp) {
+			return nil
+		}
+		return err
+	}
+
+	if envknob.Bool("TS_DUMP_HELP") {
+		walkCommands(rootCmd, func(c *ffcli.Command) {
+			fmt.Println("===")
+			// UsageFuncs are typically called during Command.Run which ensures
+			// FlagSet is not nil.
+			if c.FlagSet == nil {
+				c.FlagSet = flag.NewFlagSet(c.Name, flag.ContinueOnError)
+			}
+			if c.UsageFunc != nil {
+				fmt.Println(c.UsageFunc(c))
+			} else {
+				fmt.Println(ffcli.DefaultUsageFunc(c))
+			}
+		})
+		return
+	}
+
+	localClient.Socket = rootArgs.socket
+	rootCmd.FlagSet.Visit(func(f *flag.Flag) {
+		if f.Name == "socket" {
+			localClient.UseSocketOnly = true
+		}
+	})
+
+	err = rootCmd.Run(context.Background())
+	if tailscale.IsAccessDeniedError(err) && os.Getuid() != 0 && runtime.GOOS != "windows" {
+		return fmt.Errorf("%v\n\nUse 'sudo tailscale %s' or 'tailscale up --operator=$USER' to not require root.", err, strings.Join(args, " "))
+	}
+	if errors.Is(err, flag.ErrHelp) {
+		return nil
+	}
+	return err
+}
+
+func newRootCmd() *ffcli.Command {
 	rootfs := newFlagSet("tailscale")
 	rootfs.StringVar(&rootArgs.socket, "socket", paths.DefaultTailscaledSocket(), "path to tailscaled socket")
 
@@ -134,10 +176,11 @@ change in the future.
 			exitNodeCmd(),
 			updateCmd,
 			whoisCmd,
+			debugCmd,
+			driveCmd,
 		},
-		FlagSet:   rootfs,
-		Exec:      func(context.Context, []string) error { return flag.ErrHelp },
-		UsageFunc: usageFunc,
+		FlagSet: rootfs,
+		Exec:    func(context.Context, []string) error { return flag.ErrHelp },
 	}
 	if envknob.UseWIPCode() {
 		rootCmd.Subcommands = append(rootCmd.Subcommands,
@@ -145,45 +188,16 @@ change in the future.
 		)
 	}
 
-	// Don't advertise these commands, but they're still explicitly available.
-	switch {
-	case slices.Contains(args, "debug"):
-		rootCmd.Subcommands = append(rootCmd.Subcommands, debugCmd)
-	case slices.Contains(args, "drive"):
-		rootCmd.Subcommands = append(rootCmd.Subcommands, driveCmd)
-	}
 	if runtime.GOOS == "linux" && distro.Get() == distro.Synology {
 		rootCmd.Subcommands = append(rootCmd.Subcommands, configureHostCmd)
 	}
 
-	for _, c := range rootCmd.Subcommands {
+	walkCommands(rootCmd, func(c *ffcli.Command) {
 		if c.UsageFunc == nil {
 			c.UsageFunc = usageFunc
 		}
-	}
-
-	if err := rootCmd.Parse(args); err != nil {
-		if errors.Is(err, flag.ErrHelp) {
-			return nil
-		}
-		return err
-	}
-
-	localClient.Socket = rootArgs.socket
-	rootfs.Visit(func(f *flag.Flag) {
-		if f.Name == "socket" {
-			localClient.UseSocketOnly = true
-		}
 	})
-
-	err = rootCmd.Run(context.Background())
-	if tailscale.IsAccessDeniedError(err) && os.Getuid() != 0 && runtime.GOOS != "windows" {
-		return fmt.Errorf("%v\n\nUse 'sudo tailscale %s' or 'tailscale up --operator=$USER' to not require root.", err, strings.Join(args, " "))
-	}
-	if errors.Is(err, flag.ErrHelp) {
-		return nil
-	}
-	return err
+	return rootCmd
 }
 
 func fatalf(format string, a ...any) {
@@ -202,6 +216,13 @@ var rootArgs struct {
 	socket string
 }
 
+func walkCommands(cmd *ffcli.Command, f func(*ffcli.Command)) {
+	f(cmd)
+	for _, sub := range cmd.Subcommands {
+		walkCommands(sub, f)
+	}
+}
+
 // usageFuncNoDefaultValues is like usageFunc but doesn't print default values.
 func usageFuncNoDefaultValues(c *ffcli.Command) string {
 	return usageFuncOpt(c, false)
@@ -213,23 +234,32 @@ func usageFunc(c *ffcli.Command) string {
 
 func usageFuncOpt(c *ffcli.Command, withDefaults bool) string {
 	var b strings.Builder
+	const hiddenPrefix = "HIDDEN: "
+
+	if c.ShortHelp != "" {
+		fmt.Fprintf(&b, "%s\n\n", c.ShortHelp)
+	}
 
 	fmt.Fprintf(&b, "USAGE\n")
 	if c.ShortUsage != "" {
-		fmt.Fprintf(&b, "  %s\n", c.ShortUsage)
+		fmt.Fprintf(&b, "  %s\n", strings.ReplaceAll(c.ShortUsage, "\n", "\n  "))
 	} else {
 		fmt.Fprintf(&b, "  %s\n", c.Name)
 	}
 	fmt.Fprintf(&b, "\n")
 
 	if c.LongHelp != "" {
-		fmt.Fprintf(&b, "%s\n\n", c.LongHelp)
+		help, _ := strings.CutPrefix(c.LongHelp, hiddenPrefix)
+		fmt.Fprintf(&b, "%s\n\n", help)
 	}
 
 	if len(c.Subcommands) > 0 {
 		fmt.Fprintf(&b, "SUBCOMMANDS\n")
 		tw := tabwriter.NewWriter(&b, 0, 2, 2, ' ', 0)
 		for _, subcommand := range c.Subcommands {
+			if strings.HasPrefix(subcommand.LongHelp, hiddenPrefix) {
+				continue
+			}
 			fmt.Fprintf(tw, "  %s\t%s\n", subcommand.Name, subcommand.ShortHelp)
 		}
 		tw.Flush()
@@ -242,7 +272,7 @@ func usageFuncOpt(c *ffcli.Command, withDefaults bool) string {
 		c.FlagSet.VisitAll(func(f *flag.Flag) {
 			var s string
 			name, usage := flag.UnquoteUsage(f)
-			if strings.HasPrefix(usage, "HIDDEN: ") {
+			if strings.HasPrefix(usage, hiddenPrefix) {
 				return
 			}
 			if isBoolFlag(f) {

cmd/tailscale/cli/cli_test.go

@@ -16,6 +16,7 @@ import (
 
 	qt "github.com/frankban/quicktest"
 	"github.com/google/go-cmp/cmp"
+	"github.com/peterbourgon/ff/v3/ffcli"
 	"tailscale.com/envknob"
 	"tailscale.com/health/healthmsg"
 	"tailscale.com/ipn"
@@ -29,15 +30,37 @@ import (
 	"tailscale.com/version/distro"
 )
 
+func TestPanicIfAnyEnvCheckedInInit(t *testing.T) {
+	envknob.PanicIfAnyEnvCheckedInInit()
+}
+
+func TestShortUsage_FullCmd(t *testing.T) {
+	t.Setenv("TAILSCALE_USE_WIP_CODE", "1")
+	if !envknob.UseWIPCode() {
+		t.Fatal("expected envknob.UseWIPCode() to be true")
+	}
+
+	// Some commands have more than one path from the root, so investigate all
+	// paths before we report errors.
+	ok := make(map[*ffcli.Command]bool)
+	root := newRootCmd()
+	walkCommands(root, func(c *ffcli.Command) {
+		if !ok[c] {
+			ok[c] = strings.HasPrefix(c.ShortUsage, "tailscale ") && (c.Name == "tailscale" || strings.Contains(c.ShortUsage, " "+c.Name+" ") || strings.HasSuffix(c.ShortUsage, " "+c.Name))
+		}
+	})
+	walkCommands(root, func(c *ffcli.Command) {
+		if !ok[c] {
+			t.Errorf("subcommand %s should show full usage ('tailscale ... %s ...') in ShortUsage (%q)", c.Name, c.Name, c.ShortUsage)
+		}
+	})
+}
+
 // geese is a collection of gooses. It need not be complete.
 // But it should include anything handled specially (e.g. linux, windows)
 // and at least one thing that's not (darwin, freebsd).
 var geese = []string{"linux", "darwin", "windows", "freebsd"}
 
-func TestPanicIfAnyEnvCheckedInInit(t *testing.T) {
-	envknob.PanicIfAnyEnvCheckedInInit()
-}
-
 // Test that checkForAccidentalSettingReverts's updateMaskedPrefsFromUpFlag can handle
 // all flags. This will panic if a new flag creeps in that's unhandled.
 //

cmd/tailscale/cli/configure-kube.go

@@ -27,7 +27,7 @@ func init() {
 var configureKubeconfigCmd = &ffcli.Command{
 	Name:       "kubeconfig",
 	ShortHelp:  "[ALPHA] Connect to a Kubernetes cluster using a Tailscale Auth Proxy",
-	ShortUsage: "kubeconfig <hostname-or-fqdn>",
+	ShortUsage: "tailscale configure kubeconfig <hostname-or-fqdn>",
 	LongHelp: strings.TrimSpace(`
 Run this command to configure kubectl to connect to a Kubernetes cluster over Tailscale.
 

cmd/tailscale/cli/configure-synology.go

@@ -22,10 +22,11 @@ import (
 // used to configure Synology devices, but is now a compatibility alias to
 // "tailscale configure synology".
 var configureHostCmd = &ffcli.Command{
-	Name:      "configure-host",
-	Exec:      runConfigureSynology,
-	ShortHelp: synologyConfigureCmd.ShortHelp,
-	LongHelp:  synologyConfigureCmd.LongHelp,
+	Name:       "configure-host",
+	Exec:       runConfigureSynology,
+	ShortUsage: "tailscale configure-host",
+	ShortHelp:  synologyConfigureCmd.ShortHelp,
+	LongHelp:   synologyConfigureCmd.LongHelp,
 	FlagSet: (func() *flag.FlagSet {
 		fs := newFlagSet("configure-host")
 		return fs
@@ -33,9 +34,10 @@ var configureHostCmd = &ffcli.Command{
 }
 
 var synologyConfigureCmd = &ffcli.Command{
-	Name:      "synology",
-	Exec:      runConfigureSynology,
-	ShortHelp: "Configure Synology to enable outbound connections",
+	Name:       "synology",
+	Exec:       runConfigureSynology,
+	ShortUsage: "tailscale configure synology",
+	ShortHelp:  "Configure Synology to enable outbound connections",
 	LongHelp: strings.TrimSpace(`
 This command is intended to run at boot as root on a Synology device to
 create the /dev/net/tun device and give the tailscaled binary permission

cmd/tailscale/cli/configure.go

@@ -14,8 +14,9 @@ import (
 )
 
 var configureCmd = &ffcli.Command{
-	Name:      "configure",
-	ShortHelp: "[ALPHA] Configure the host to enable more Tailscale features",
+	Name:       "configure",
+	ShortUsage: "tailscale configure <subcommand>",
+	ShortHelp:  "[ALPHA] Configure the host to enable more Tailscale features",
 	LongHelp: strings.TrimSpace(`
 The 'configure' set of commands are intended to provide a way to enable different
 services on the host to use Tailscale in more ways.

cmd/tailscale/cli/debug.go

@@ -45,9 +45,10 @@ import (
 )
 
 var debugCmd = &ffcli.Command{
-	Name:     "debug",
-	Exec:     runDebug,
-	LongHelp: `"tailscale debug" contains misc debug facilities; it is not a stable interface.`,
+	Name:       "debug",
+	Exec:       runDebug,
+	ShortUsage: "tailscale debug <debug-flags | subcommand>",
+	LongHelp:   `HIDDEN: "tailscale debug" contains misc debug facilities; it is not a stable interface.`,
 	FlagSet: (func() *flag.FlagSet {
 		fs := newFlagSet("debug")
 		fs.StringVar(&debugArgs.file, "file", "", "get, delete:NAME, or NAME")
@@ -58,15 +59,16 @@ var debugCmd = &ffcli.Command{
 	})(),
 	Subcommands: []*ffcli.Command{
 		{
-			Name:      "derp-map",
-			Exec:      runDERPMap,
-			ShortHelp: "print DERP map",
+			Name:       "derp-map",
+			ShortUsage: "tailscale debug derp-map",
+			Exec:       runDERPMap,
+			ShortHelp:  "Print DERP map",
 		},
 		{
 			Name:       "component-logs",
-			Exec:       runDebugComponentLogs,
-			ShortHelp:  "enable/disable debug logs for a component",
 			ShortUsage: "tailscale debug component-logs [" + strings.Join(ipn.DebuggableComponents, "|") + "]",
+			Exec:       runDebugComponentLogs,
+			ShortHelp:  "Enable/disable debug logs for a component",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("component-logs")
 				fs.DurationVar(&debugComponentLogsArgs.forDur, "for", time.Hour, "how long to enable debug logs for; zero or negative means to disable")
@@ -74,14 +76,16 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "daemon-goroutines",
-			Exec:      runDaemonGoroutines,
-			ShortHelp: "print tailscaled's goroutines",
+			Name:       "daemon-goroutines",
+			ShortUsage: "tailscale debug daemon-goroutines",
+			Exec:       runDaemonGoroutines,
+			ShortHelp:  "Print tailscaled's goroutines",
 		},
 		{
-			Name:      "daemon-logs",
-			Exec:      runDaemonLogs,
-			ShortHelp: "watch tailscaled's server logs",
+			Name:       "daemon-logs",
+			ShortUsage: "tailscale debug daemon-logs",
+			Exec:       runDaemonLogs,
+			ShortHelp:  "Watch tailscaled's server logs",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("daemon-logs")
 				fs.IntVar(&daemonLogsArgs.verbose, "verbose", 0, "verbosity level")
@@ -90,9 +94,10 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "metrics",
-			Exec:      runDaemonMetrics,
-			ShortHelp: "print tailscaled's metrics",
+			Name:       "metrics",
+			ShortUsage: "tailscale debug metrics",
+			Exec:       runDaemonMetrics,
+			ShortHelp:  "Print tailscaled's metrics",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("metrics")
 				fs.BoolVar(&metricsArgs.watch, "watch", false, "print JSON dump of delta values")
@@ -100,80 +105,95 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "env",
-			Exec:      runEnv,
-			ShortHelp: "print cmd/tailscale environment",
+			Name:       "env",
+			ShortUsage: "tailscale debug env",
+			Exec:       runEnv,
+			ShortHelp:  "Print cmd/tailscale environment",
 		},
 		{
-			Name:      "stat",
-			Exec:      runStat,
-			ShortHelp: "stat a file",
+			Name:       "stat",
+			ShortUsage: "tailscale debug stat <files...>",
+			Exec:       runStat,
+			ShortHelp:  "Stat a file",
 		},
 		{
-			Name:      "hostinfo",
-			Exec:      runHostinfo,
-			ShortHelp: "print hostinfo",
+			Name:       "hostinfo",
+			ShortUsage: "tailscale debug hostinfo",
+			Exec:       runHostinfo,
+			ShortHelp:  "Print hostinfo",
 		},
 		{
-			Name:      "local-creds",
-			Exec:      runLocalCreds,
-			ShortHelp: "print how to access Tailscale LocalAPI",
+			Name:       "local-creds",
+			ShortUsage: "tailscale debug local-creds",
+			Exec:       runLocalCreds,
+			ShortHelp:  "Print how to access Tailscale LocalAPI",
 		},
 		{
-			Name:      "restun",
-			Exec:      localAPIAction("restun"),
-			ShortHelp: "force a magicsock restun",
+			Name:       "restun",
+			ShortUsage: "tailscale debug restun",
+			Exec:       localAPIAction("restun"),
+			ShortHelp:  "Force a magicsock restun",
 		},
 		{
-			Name:      "rebind",
-			Exec:      localAPIAction("rebind"),
-			ShortHelp: "force a magicsock rebind",
+			Name:       "rebind",
+			ShortUsage: "tailscale debug rebind",
+			Exec:       localAPIAction("rebind"),
+			ShortHelp:  "Force a magicsock rebind",
 		},
 		{
-			Name:      "derp-set-on-demand",
-			Exec:      localAPIAction("derp-set-homeless"),
-			ShortHelp: "enable DERP on-demand mode (breaks reachability)",
+			Name:       "derp-set-on-demand",
+			ShortUsage: "tailscale debug derp-set-on-demand",
+			Exec:       localAPIAction("derp-set-homeless"),
+			ShortHelp:  "Enable DERP on-demand mode (breaks reachability)",
 		},
 		{
-			Name:      "derp-unset-on-demand",
-			Exec:      localAPIAction("derp-unset-homeless"),
-			ShortHelp: "disable DERP on-demand mode",
+			Name:       "derp-unset-on-demand",
+			ShortUsage: "tailscale debug derp-unset-on-demand",
+			Exec:       localAPIAction("derp-unset-homeless"),
+			ShortHelp:  "Disable DERP on-demand mode",
 		},
 		{
-			Name:      "break-tcp-conns",
-			Exec:      localAPIAction("break-tcp-conns"),
-			ShortHelp: "break any open TCP connections from the daemon",
+			Name:       "break-tcp-conns",
+			ShortUsage: "tailscale debug break-tcp-conns",
+			Exec:       localAPIAction("break-tcp-conns"),
+			ShortHelp:  "Break any open TCP connections from the daemon",
 		},
 		{
-			Name:      "break-derp-conns",
-			Exec:      localAPIAction("break-derp-conns"),
-			ShortHelp: "break any open DERP connections from the daemon",
+			Name:       "break-derp-conns",
+			ShortUsage: "tailscale debug break-derp-conns",
+			Exec:       localAPIAction("break-derp-conns"),
+			ShortHelp:  "Break any open DERP connections from the daemon",
 		},
 		{
-			Name:      "pick-new-derp",
-			Exec:      localAPIAction("pick-new-derp"),
-			ShortHelp: "switch to some other random DERP home region for a short time",
+			Name:       "pick-new-derp",
+			ShortUsage: "tailscale debug pick-new-derp",
+			Exec:       localAPIAction("pick-new-derp"),
+			ShortHelp:  "Switch to some other random DERP home region for a short time",
 		},
 		{
-			Name:      "force-netmap-update",
-			Exec:      localAPIAction("force-netmap-update"),
-			ShortHelp: "force a full no-op netmap update (for load testing)",
+			Name:       "force-netmap-update",
+			ShortUsage: "tailscale debug force-netmap-update",
+			Exec:       localAPIAction("force-netmap-update"),
+			ShortHelp:  "Force a full no-op netmap update (for load testing)",
 		},
 		{
 			// TODO(bradfitz,maisem): eventually promote this out of debug
-			Name:      "reload-config",
-			Exec:      reloadConfig,
-			ShortHelp: "reload config",
+			Name:       "reload-config",
+			ShortUsage: "tailscale debug reload-config",
+			Exec:       reloadConfig,
+			ShortHelp:  "Reload config",
 		},
 		{
-			Name:      "control-knobs",
-			Exec:      debugControlKnobs,
-			ShortHelp: "see current control knobs",
+			Name:       "control-knobs",
+			ShortUsage: "tailscale debug control-knobs",
+			Exec:       debugControlKnobs,
+			ShortHelp:  "See current control knobs",
 		},
 		{
-			Name:      "prefs",
-			Exec:      runPrefs,
-			ShortHelp: "print prefs",
+			Name:       "prefs",
+			ShortUsage: "tailscale debug prefs",
+			Exec:       runPrefs,
+			ShortHelp:  "Print prefs",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("prefs")
 				fs.BoolVar(&prefsArgs.pretty, "pretty", false, "If true, pretty-print output")
@@ -181,9 +201,10 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "watch-ipn",
-			Exec:      runWatchIPN,
-			ShortHelp: "subscribe to IPN message bus",
+			Name:       "watch-ipn",
+			ShortUsage: "tailscale debug watch-ipn",
+			Exec:       runWatchIPN,
+			ShortHelp:  "Subscribe to IPN message bus",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("watch-ipn")
 				fs.BoolVar(&watchIPNArgs.netmap, "netmap", true, "include netmap in messages")
@@ -194,9 +215,10 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "netmap",
-			Exec:      runNetmap,
-			ShortHelp: "print the current network map",
+			Name:       "netmap",
+			ShortUsage: "tailscale debug netmap",
+			Exec:       runNetmap,
+			ShortHelp:  "Print the current network map",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("netmap")
 				fs.BoolVar(&netmapArgs.showPrivateKey, "show-private-key", false, "include node private key in printed netmap")
@@ -204,14 +226,17 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "via",
+			Name: "via",
+			ShortUsage: "tailscale via <site-id> <v4-cidr>\n" +
+				"tailscale via <v6-route>",
 			Exec:      runVia,
-			ShortHelp: "convert between site-specific IPv4 CIDRs and IPv6 'via' routes",
+			ShortHelp: "Convert between site-specific IPv4 CIDRs and IPv6 'via' routes",
 		},
 		{
-			Name:      "ts2021",
-			Exec:      runTS2021,
-			ShortHelp: "debug ts2021 protocol connectivity",
+			Name:       "ts2021",
+			ShortUsage: "tailscale debug ts2021",
+			Exec:       runTS2021,
+			ShortHelp:  "Debug ts2021 protocol connectivity",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("ts2021")
 				fs.StringVar(&ts2021Args.host, "host", "controlplane.tailscale.com", "hostname of control plane")
@@ -221,9 +246,10 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "set-expire",
-			Exec:      runSetExpire,
-			ShortHelp: "manipulate node key expiry for testing",
+			Name:       "set-expire",
+			ShortUsage: "tailscale debug set-expire --in=1m",
+			Exec:       runSetExpire,
+			ShortHelp:  "Manipulate node key expiry for testing",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("set-expire")
 				fs.DurationVar(&setExpireArgs.in, "in", 0, "if non-zero, set node key to expire this duration from now")
@@ -231,9 +257,10 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "dev-store-set",
-			Exec:      runDevStoreSet,
-			ShortHelp: "set a key/value pair during development",
+			Name:       "dev-store-set",
+			ShortUsage: "tailscale debug dev-store-set",
+			Exec:       runDevStoreSet,
+			ShortHelp:  "Set a key/value pair during development",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("store-set")
 				fs.BoolVar(&devStoreSetArgs.danger, "danger", false, "accept danger")
@@ -241,14 +268,16 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "derp",
-			Exec:      runDebugDERP,
-			ShortHelp: "test a DERP configuration",
+			Name:       "derp",
+			ShortUsage: "tailscale debug derp",
+			Exec:       runDebugDERP,
+			ShortHelp:  "Test a DERP configuration",
 		},
 		{
-			Name:      "capture",
-			Exec:      runCapture,
-			ShortHelp: "streams pcaps for debugging",
+			Name:       "capture",
+			ShortUsage: "tailscale debug capture",
+			Exec:       runCapture,
+			ShortHelp:  "Streams pcaps for debugging",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("capture")
 				fs.StringVar(&captureArgs.outFile, "o", "", "path to stream the pcap (or - for stdout), leave empty to start wireshark")
@@ -256,9 +285,10 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "portmap",
-			Exec:      debugPortmap,
-			ShortHelp: "run portmap debugging",
+			Name:       "portmap",
+			ShortUsage: "tailscale debug portmap",
+			Exec:       debugPortmap,
+			ShortHelp:  "Run portmap debugging",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("portmap")
 				fs.DurationVar(&debugPortmapArgs.duration, "duration", 5*time.Second, "timeout for port mapping")
@@ -270,14 +300,16 @@ var debugCmd = &ffcli.Command{
 			})(),
 		},
 		{
-			Name:      "peer-endpoint-changes",
-			Exec:      runPeerEndpointChanges,
-			ShortHelp: "prints debug information about a peer's endpoint changes",
+			Name:       "peer-endpoint-changes",
+			ShortUsage: "tailscale debug peer-endpoint-changes <hostname-or-IP>",
+			Exec:       runPeerEndpointChanges,
+			ShortHelp:  "Prints debug information about a peer's endpoint changes",
 		},
 		{
-			Name:      "dial-types",
-			Exec:      runDebugDialTypes,
-			ShortHelp: "prints debug information about connecting to a given host or IP",
+			Name:       "dial-types",
+			ShortUsage: "tailscale debug dial-types <hostname-or-IP> <port>",
+			Exec:       runDebugDialTypes,
+			ShortHelp:  "Prints debug information about connecting to a given host or IP",
 			FlagSet: (func() *flag.FlagSet {
 				fs := newFlagSet("dial-types")
 				fs.StringVar(&debugDialTypesArgs.network, "network", "tcp", `network type to dial ("tcp", "udp", etc.)`)
@@ -867,7 +899,7 @@ var setExpireArgs struct {
 
 func runSetExpire(ctx context.Context, args []string) error {
 	if len(args) != 0 || setExpireArgs.in == 0 {
-		return errors.New("usage --in=<duration>")
+		return errors.New("usage: tailscale debug set-expire --in=<duration>")
 	}
 	return localClient.DebugSetExpireIn(ctx, setExpireArgs.in)
 }
@@ -966,7 +998,7 @@ func runPeerEndpointChanges(ctx context.Context, args []string) error {
 	}
 
 	if len(args) != 1 || args[0] == "" {
-		return errors.New("usage: peer-status <hostname-or-IP>")
+		return errors.New("usage: tailscale debug peer-endpoint-changes <hostname-or-IP>")
 	}
 	var ip string
 
@@ -1042,7 +1074,7 @@ func runDebugDialTypes(ctx context.Context, args []string) error {
 	}
 
 	if len(args) != 2 || args[0] == "" || args[1] == "" {
-		return errors.New("usage: dial-types <hostname-or-IP> <port>")
+		return errors.New("usage: tailscale debug dial-types <hostname-or-IP> <port>")
 	}
 
 	port, err := strconv.ParseUint(args[1], 10, 16)

cmd/tailscale/cli/down.go

@@ -14,7 +14,7 @@ import (
 
 var downCmd = &ffcli.Command{
 	Name:       "down",
-	ShortUsage: "down",
+	ShortUsage: "tailscale down",
 	ShortHelp:  "Disconnect from Tailscale",
 
 	Exec:    runDown,

cmd/tailscale/cli/drive.go

@@ -14,10 +14,10 @@ import (
 )
 
 const (
-	driveShareUsage   = "drive share <name> <path>"
-	driveRenameUsage  = "drive rename <oldname> <newname>"
-	driveUnshareUsage = "drive unshare <name>"
-	driveListUsage    = "drive list"
+	driveShareUsage   = "tailscale drive share <name> <path>"
+	driveRenameUsage  = "tailscale drive rename <oldname> <newname>"
+	driveUnshareUsage = "tailscale drive unshare <name>"
+	driveListUsage    = "tailscale drive list"
 )
 
 var driveCmd = &ffcli.Command{
@@ -33,28 +33,32 @@ var driveCmd = &ffcli.Command{
 	UsageFunc: usageFuncNoDefaultValues,
 	Subcommands: []*ffcli.Command{
 		{
-			Name:      "share",
-			Exec:      runDriveShare,
-			ShortHelp: "[ALPHA] create or modify a share",
-			UsageFunc: usageFunc,
+			Name:       "share",
+			ShortUsage: driveShareUsage,
+			Exec:       runDriveShare,
+			ShortHelp:  "[ALPHA] create or modify a share",
+			UsageFunc:  usageFunc,
 		},
 		{
-			Name:      "rename",
-			ShortHelp: "[ALPHA] rename a share",
-			Exec:      runDriveRename,
-			UsageFunc: usageFunc,
+			Name:       "rename",
+			ShortUsage: driveRenameUsage,
+			ShortHelp:  "[ALPHA] rename a share",
+			Exec:       runDriveRename,
+			UsageFunc:  usageFunc,
 		},
 		{
-			Name:      "unshare",
-			ShortHelp: "[ALPHA] remove a share",
-			Exec:      runDriveUnshare,
-			UsageFunc: usageFunc,
+			Name:       "unshare",
+			ShortUsage: driveUnshareUsage,
+			ShortHelp:  "[ALPHA] remove a share",
+			Exec:       runDriveUnshare,
+			UsageFunc:  usageFunc,
 		},
 		{
-			Name:      "list",
-			ShortHelp: "[ALPHA] list current shares",
-			Exec:      runDriveList,
-			UsageFunc: usageFunc,
+			Name:       "list",
+			ShortUsage: driveListUsage,
+			ShortHelp:  "[ALPHA] list current shares",
+			Exec:       runDriveList,
+			UsageFunc:  usageFunc,
 		},
 	},
 	Exec: func(context.Context, []string) error {
@@ -237,8 +241,8 @@ You can get a list of currently published shares by running:
 
   $ tailscale drive list`
 
-var shareLongHelpAs = `
+const shareLongHelpAs = `
 
 If you want a share to be accessed as a different user, you can use sudo to accomplish this. For example, to create the aforementioned share as "theuser", you could run:
 
-	$ sudo -u theuser tailscale drive share docs /Users/theuser/Documents`
+  $ sudo -u theuser tailscale drive share docs /Users/theuser/Documents`

cmd/tailscale/cli/exitnode.go

@@ -23,7 +23,7 @@ import (
 func exitNodeCmd() *ffcli.Command {
 	return &ffcli.Command{
 		Name:       "exit-node",
-		ShortUsage: "exit-node [flags]",
+		ShortUsage: "tailscale exit-node [flags]",
 		ShortHelp:  "Show machines on your tailnet configured as exit nodes",
 		LongHelp:   "Show machines on your tailnet configured as exit nodes",
 		Exec: func(context.Context, []string) error {
@@ -32,7 +32,7 @@ func exitNodeCmd() *ffcli.Command {
 		Subcommands: append([]*ffcli.Command{
 			{
 				Name:       "list",
-				ShortUsage: "exit-node list [flags]",
+				ShortUsage: "tailscale exit-node list [flags]",
 				ShortHelp:  "Show exit nodes",
 				Exec:       runExitNodeList,
 				FlagSet: (func() *flag.FlagSet {
@@ -48,13 +48,13 @@ func exitNodeCmd() *ffcli.Command {
 				return []*ffcli.Command{
 					{
 						Name:       "connect",
-						ShortUsage: "exit-node connect",
+						ShortUsage: "tailscale exit-node connect",
 						ShortHelp:  "connect to most recently used exit node",
 						Exec:       exitNodeSetUse(true),
 					},
 					{
 						Name:       "disconnect",
-						ShortUsage: "exit-node disconnect",
+						ShortUsage: "tailscale exit-node disconnect",
 						ShortHelp:  "disconnect from current exit node, if any",
 						Exec:       exitNodeSetUse(false),
 					},

cmd/tailscale/cli/file.go

@@ -38,7 +38,7 @@ import (
 
 var fileCmd = &ffcli.Command{
 	Name:       "file",
-	ShortUsage: "file <cp|get> ...",
+	ShortUsage: "tailscale file <cp|get> ...",
 	ShortHelp:  "Send or receive files",
 	Subcommands: []*ffcli.Command{
 		fileCpCmd,
@@ -65,7 +65,7 @@ func (c *countingReader) Read(buf []byte) (int, error) {
 
 var fileCpCmd = &ffcli.Command{
 	Name:       "cp",
-	ShortUsage: "file cp <files...> <target>:",
+	ShortUsage: "tailscale file cp <files...> <target>:",
 	ShortHelp:  "Copy file(s) to a host",
 	Exec:       runCp,
 	FlagSet: (func() *flag.FlagSet {
@@ -412,7 +412,7 @@ func (v *onConflict) Set(s string) error {
 
 var fileGetCmd = &ffcli.Command{
 	Name:       "get",
-	ShortUsage: "file get [--wait] [--verbose] [--conflict=(skip|overwrite|rename)] <target-directory>",
+	ShortUsage: "tailscale file get [--wait] [--verbose] [--conflict=(skip|overwrite|rename)] <target-directory>",
 	ShortHelp:  "Move files out of the Tailscale file inbox",
 	Exec:       runFileGet,
 	FlagSet: (func() *flag.FlagSet {
@@ -420,7 +420,7 @@ var fileGetCmd = &ffcli.Command{
 		fs.BoolVar(&getArgs.wait, "wait", false, "wait for a file to arrive if inbox is empty")
 		fs.BoolVar(&getArgs.loop, "loop", false, "run get in a loop, receiving files as they come in")
 		fs.BoolVar(&getArgs.verbose, "verbose", false, "verbose output")
-		fs.Var(&getArgs.conflict, "conflict", `behavior when a conflicting (same-named) file already exists in the target directory.
+		fs.Var(&getArgs.conflict, "conflict", "`behavior`"+` when a conflicting (same-named) file already exists in the target directory.
 	skip:       skip conflicting files: leave them in the taildrop inbox and print an error. get any non-conflicting files
 	overwrite:  overwrite existing file
 	rename:     write to a new number-suffixed filename`)

cmd/tailscale/cli/funnel.go

@@ -36,9 +36,9 @@ func newFunnelCommand(e *serveEnv) *ffcli.Command {
 		Name:      "funnel",
 		ShortHelp: "Turn on/off Funnel service",
 		ShortUsage: strings.Join([]string{
-			"funnel <serve-port> {on|off}",
-			"funnel status [--json]",
-		}, "\n  "),
+			"tailscale funnel <serve-port> {on|off}",
+			"tailscale funnel status [--json]",
+		}, "\n"),
 		LongHelp: strings.Join([]string{
 			"Funnel allows you to publish a 'tailscale serve'",
 			"server publicly, open to the entire internet.",
@@ -46,17 +46,16 @@ func newFunnelCommand(e *serveEnv) *ffcli.Command {
 			"Turning off Funnel only turns off serving to the internet.",
 			"It does not affect serving to your tailnet.",
 		}, "\n"),
-		Exec:      e.runFunnel,
-		UsageFunc: usageFunc,
+		Exec: e.runFunnel,
 		Subcommands: []*ffcli.Command{
 			{
-				Name:      "status",
-				Exec:      e.runServeStatus,
-				ShortHelp: "show current serve/funnel status",
+				Name:       "status",
+				Exec:       e.runServeStatus,
+				ShortUsage: "tailscale funnel status [--json]",
+				ShortHelp:  "Show current serve/funnel status",
 				FlagSet: e.newFlags("funnel-status", func(fs *flag.FlagSet) {
 					fs.BoolVar(&e.json, "json", false, "output JSON")
 				}),
-				UsageFunc: usageFunc,
 			},
 		},
 	}

cmd/tailscale/cli/id-token.go

@@ -12,8 +12,8 @@ import (
 
 var idTokenCmd = &ffcli.Command{
 	Name:       "id-token",
-	ShortUsage: "id-token <aud>",
-	ShortHelp:  "fetch an OIDC id-token for the Tailscale machine",
+	ShortUsage: "tailscale id-token <aud>",
+	ShortHelp:  "Fetch an OIDC id-token for the Tailscale machine",
 	Exec:       runIDToken,
 }
 

cmd/tailscale/cli/ip.go

@@ -16,7 +16,7 @@ import (
 
 var ipCmd = &ffcli.Command{
 	Name:       "ip",
-	ShortUsage: "ip [-1] [-4] [-6] [peer hostname or ip address]",
+	ShortUsage: "tailscale ip [-1] [-4] [-6] [peer hostname or ip address]",
 	ShortHelp:  "Show Tailscale IP addresses",
 	LongHelp:   "Show Tailscale IP addresses for peer. Peer defaults to the current machine.",
 	Exec:       runIP,

cmd/tailscale/cli/licenses.go

@@ -12,7 +12,7 @@ import (
 
 var licensesCmd = &ffcli.Command{
 	Name:       "licenses",
-	ShortUsage: "licenses",
+	ShortUsage: "tailscale licenses",
 	ShortHelp:  "Get open source license information",
 	LongHelp:   "Get open source license information",
 	Exec:       runLicenses,

cmd/tailscale/cli/login.go

@@ -14,11 +14,10 @@ var loginArgs upArgsT
 
 var loginCmd = &ffcli.Command{
 	Name:       "login",
-	ShortUsage: "login [flags]",
+	ShortUsage: "tailscale login [flags]",
 	ShortHelp:  "Log in to a Tailscale account",
 	LongHelp: `"tailscale login" logs this machine in to your Tailscale network.
 This command is currently in alpha and may change in the future.`,
-	UsageFunc: usageFunc,
 	FlagSet: func() *flag.FlagSet {
 		return newUpFlagSet(effectiveGOOS(), &loginArgs, "login")
 	}(),

cmd/tailscale/cli/logout.go

@@ -13,7 +13,7 @@ import (
 
 var logoutCmd = &ffcli.Command{
 	Name:       "logout",
-	ShortUsage: "logout [flags]",
+	ShortUsage: "tailscale logout",
 	ShortHelp:  "Disconnect from Tailscale and expire current node key",
 
 	LongHelp: strings.TrimSpace(`

cmd/tailscale/cli/nc.go

@@ -16,7 +16,7 @@ import (
 
 var ncCmd = &ffcli.Command{
 	Name:       "nc",
-	ShortUsage: "nc <hostname-or-IP> <port>",
+	ShortUsage: "tailscale nc <hostname-or-IP> <port>",
 	ShortHelp:  "Connect to a port on a host, connected to stdin/stdout",
 	Exec:       runNC,
 }

cmd/tailscale/cli/netcheck.go

@@ -28,7 +28,7 @@ import (
 
 var netcheckCmd = &ffcli.Command{
 	Name:       "netcheck",
-	ShortUsage: "netcheck",
+	ShortUsage: "tailscale netcheck",
 	ShortHelp:  "Print an analysis of local network conditions",
 	Exec:       runNetcheck,
 	FlagSet: (func() *flag.FlagSet {

cmd/tailscale/cli/network-lock.go

@@ -26,7 +26,7 @@ import (
 
 var netlockCmd = &ffcli.Command{
 	Name:       "lock",
-	ShortUsage: "lock <sub-command> <arguments>",
+	ShortUsage: "tailscale lock <sub-command> <arguments>",
 	ShortHelp:  "Manage tailnet lock",
 	LongHelp:   "Manage tailnet lock",
 	Subcommands: []*ffcli.Command{
@@ -61,7 +61,7 @@ var nlInitArgs struct {
 
 var nlInitCmd = &ffcli.Command{
 	Name:       "init",
-	ShortUsage: "init [--gen-disablement-for-support] --gen-disablements N <trusted-key>...",
+	ShortUsage: "tailscale lock init [--gen-disablement-for-support] --gen-disablements N <trusted-key>...",
 	ShortHelp:  "Initialize tailnet lock",
 	LongHelp: strings.TrimSpace(`
 
@@ -183,7 +183,7 @@ var nlStatusArgs struct {
 
 var nlStatusCmd = &ffcli.Command{
 	Name:       "status",
-	ShortUsage: "status",
+	ShortUsage: "tailscale lock status",
 	ShortHelp:  "Outputs the state of tailnet lock",
 	LongHelp:   "Outputs the state of tailnet lock",
 	Exec:       runNetworkLockStatus,
@@ -280,7 +280,7 @@ func runNetworkLockStatus(ctx context.Context, args []string) error {
 
 var nlAddCmd = &ffcli.Command{
 	Name:       "add",
-	ShortUsage: "add <public-key>...",
+	ShortUsage: "tailscale lock add <public-key>...",
 	ShortHelp:  "Adds one or more trusted signing keys to tailnet lock",
 	LongHelp:   "Adds one or more trusted signing keys to tailnet lock",
 	Exec: func(ctx context.Context, args []string) error {
@@ -294,7 +294,7 @@ var nlRemoveArgs struct {
 
 var nlRemoveCmd = &ffcli.Command{
 	Name:       "remove",
-	ShortUsage: "remove [--re-sign=false] <public-key>...",
+	ShortUsage: "tailscale lock remove [--re-sign=false] <public-key>...",
 	ShortHelp:  "Removes one or more trusted signing keys from tailnet lock",
 	LongHelp:   "Removes one or more trusted signing keys from tailnet lock",
 	Exec:       runNetworkLockRemove,
@@ -435,7 +435,7 @@ func runNetworkLockModify(ctx context.Context, addArgs, removeArgs []string) err
 
 var nlSignCmd = &ffcli.Command{
 	Name:       "sign",
-	ShortUsage: "sign <node-key> [<rotation-key>] or sign <auth-key>",
+	ShortUsage: "tailscale lock sign <node-key> [<rotation-key>] or sign <auth-key>",
 	ShortHelp:  "Signs a node or pre-approved auth key",
 	LongHelp: `Either:
   - signs a node key and transmits the signature to the coordination server, or
@@ -479,7 +479,7 @@ func runNetworkLockSign(ctx context.Context, args []string) error {
 
 var nlDisableCmd = &ffcli.Command{
 	Name:       "disable",
-	ShortUsage: "disable <disablement-secret>",
+	ShortUsage: "tailscale lock disable <disablement-secret>",
 	ShortHelp:  "Consumes a disablement secret to shut down tailnet lock for the tailnet",
 	LongHelp: strings.TrimSpace(`
 
@@ -508,7 +508,7 @@ func runNetworkLockDisable(ctx context.Context, args []string) error {
 
 var nlLocalDisableCmd = &ffcli.Command{
 	Name:       "local-disable",
-	ShortUsage: "local-disable",
+	ShortUsage: "tailscale lock local-disable",
 	ShortHelp:  "Disables tailnet lock for this node only",
 	LongHelp: strings.TrimSpace(`
 
@@ -530,7 +530,7 @@ func runNetworkLockLocalDisable(ctx context.Context, args []string) error {
 
 var nlDisablementKDFCmd = &ffcli.Command{
 	Name:       "disablement-kdf",
-	ShortUsage: "disablement-kdf <hex-encoded-disablement-secret>",
+	ShortUsage: "tailscale lock disablement-kdf <hex-encoded-disablement-secret>",
 	ShortHelp:  "Computes a disablement value from a disablement secret (advanced users only)",
 	LongHelp:   "Computes a disablement value from a disablement secret (advanced users only)",
 	Exec:       runNetworkLockDisablementKDF,
@@ -555,7 +555,7 @@ var nlLogArgs struct {
 
 var nlLogCmd = &ffcli.Command{
 	Name:       "log",
-	ShortUsage: "log [--limit N]",
+	ShortUsage: "tailscale lock log [--limit N]",
 	ShortHelp:  "List changes applied to tailnet lock",
 	LongHelp:   "List changes applied to tailnet lock",
 	Exec:       runNetworkLockLog,
@@ -719,7 +719,7 @@ var nlRevokeKeysArgs struct {
 
 var nlRevokeKeysCmd = &ffcli.Command{
 	Name:       "revoke-keys",
-	ShortUsage: "revoke-keys <tailnet-lock-key>...\n  revoke-keys [--cosign] [--finish] <recovery-blob>",
+	ShortUsage: "tailscale lock revoke-keys <tailnet-lock-key>...\n  revoke-keys [--cosign] [--finish] <recovery-blob>",
 	ShortHelp:  "Revoke compromised tailnet-lock keys",
 	LongHelp: `Retroactively revoke the specified tailnet lock keys (tlpub:abc).
 

cmd/tailscale/cli/ping.go

@@ -23,7 +23,7 @@ import (
 
 var pingCmd = &ffcli.Command{
 	Name:       "ping",
-	ShortUsage: "ping <hostname-or-IP>",
+	ShortUsage: "tailscale ping <hostname-or-IP>",
 	ShortHelp:  "Ping a host at the Tailscale layer, see how it routed",
 	LongHelp: strings.TrimSpace(`
 

cmd/tailscale/cli/serve_legacy.go

@@ -44,13 +44,13 @@ func newServeLegacyCommand(e *serveEnv) *ffcli.Command {
 		Name:      "serve",
 		ShortHelp: "Serve content and local servers",
 		ShortUsage: strings.Join([]string{
-			"serve http:<port> <mount-point> <source> [off]",
-			"serve https:<port> <mount-point> <source> [off]",
-			"serve tcp:<port> tcp://localhost:<local-port> [off]",
-			"serve tls-terminated-tcp:<port> tcp://localhost:<local-port> [off]",
-			"serve status [--json]",
-			"serve reset",
-		}, "\n  "),
+			"tailscale serve http:<port> <mount-point> <source> [off]",
+			"tailscale serve https:<port> <mount-point> <source> [off]",
+			"tailscale serve tcp:<port> tcp://localhost:<local-port> [off]",
+			"tailscale serve tls-terminated-tcp:<port> tcp://localhost:<local-port> [off]",
+			"tailscale serve status [--json]",
+			"tailscale serve reset",
+		}, "\n"),
 		LongHelp: strings.TrimSpace(`
 *** BETA; all of this is subject to change ***
 
@@ -91,24 +91,21 @@ EXAMPLES
     local plaintext server on port 80:
     $ tailscale serve tls-terminated-tcp:443 tcp://localhost:80
 `),
-		Exec:      e.runServe,
-		UsageFunc: usageFunc,
+		Exec: e.runServe,
 		Subcommands: []*ffcli.Command{
 			{
 				Name:      "status",
 				Exec:      e.runServeStatus,
-				ShortHelp: "show current serve/funnel status",
+				ShortHelp: "Show current serve/funnel status",
 				FlagSet: e.newFlags("serve-status", func(fs *flag.FlagSet) {
 					fs.BoolVar(&e.json, "json", false, "output JSON")
 				}),
-				UsageFunc: usageFunc,
 			},
 			{
 				Name:      "reset",
 				Exec:      e.runServeReset,
-				ShortHelp: "reset current serve/funnel config",
+				ShortHelp: "Reset current serve/funnel config",
 				FlagSet:   e.newFlags("serve-reset", nil),
-				UsageFunc: usageFunc,
 			},
 		},
 	}

cmd/tailscale/cli/serve_v2.go

@@ -110,10 +110,10 @@ func newServeV2Command(e *serveEnv, subcmd serveMode) *ffcli.Command {
 		Name:      info.Name,
 		ShortHelp: info.ShortHelp,
 		ShortUsage: strings.Join([]string{
-			fmt.Sprintf("%s <target>", info.Name),
-			fmt.Sprintf("%s status [--json]", info.Name),
-			fmt.Sprintf("%s reset", info.Name),
-		}, "\n  "),
+			fmt.Sprintf("tailscale %s <target>", info.Name),
+			fmt.Sprintf("tailscale %s status [--json]", info.Name),
+			fmt.Sprintf("tailscale %s reset", info.Name),
+		}, "\n"),
 		LongHelp: info.LongHelp + fmt.Sprintf(strings.TrimSpace(serveHelpCommon), info.Name),
 		Exec:     e.runServeCombined(subcmd),
 
@@ -131,20 +131,20 @@ func newServeV2Command(e *serveEnv, subcmd serveMode) *ffcli.Command {
 		UsageFunc: usageFuncNoDefaultValues,
 		Subcommands: []*ffcli.Command{
 			{
-				Name:      "status",
-				Exec:      e.runServeStatus,
-				ShortHelp: "view current proxy configuration",
+				Name:       "status",
+				ShortUsage: "tailscale " + info.Name + " status [--json]",
+				Exec:       e.runServeStatus,
+				ShortHelp:  "View current " + info.Name + " configuration",
 				FlagSet: e.newFlags("serve-status", func(fs *flag.FlagSet) {
 					fs.BoolVar(&e.json, "json", false, "output JSON")
 				}),
-				UsageFunc: usageFunc,
 			},
 			{
-				Name:      "reset",
-				ShortHelp: "reset current serve/funnel config",
-				Exec:      e.runServeReset,
-				FlagSet:   e.newFlags("serve-reset", nil),
-				UsageFunc: usageFunc,
+				Name:       "reset",
+				ShortUsage: "tailscale " + info.Name + " reset",
+				ShortHelp:  "Reset current " + info.Name + " config",
+				Exec:       e.runServeReset,
+				FlagSet:    e.newFlags("serve-reset", nil),
 			},
 		},
 	}

cmd/tailscale/cli/set.go

@@ -25,7 +25,7 @@ import (
 
 var setCmd = &ffcli.Command{
 	Name:       "set",
-	ShortUsage: "set [flags]",
+	ShortUsage: "tailscale set [flags]",
 	ShortHelp:  "Change specified preferences",
 	LongHelp: `"tailscale set" allows changing specific preferences.
 

cmd/tailscale/cli/ssh.go

@@ -26,7 +26,7 @@ import (
 
 var sshCmd = &ffcli.Command{
 	Name:       "ssh",
-	ShortUsage: "ssh [user@]<host> [args...]",
+	ShortUsage: "tailscale ssh [user@]<host> [args...]",
 	ShortHelp:  "SSH to a Tailscale machine",
 	LongHelp: strings.TrimSpace(`
 

cmd/tailscale/cli/status.go

@@ -29,7 +29,7 @@ import (
 
 var statusCmd = &ffcli.Command{
 	Name:       "status",
-	ShortUsage: "status [--active] [--web] [--json]",
+	ShortUsage: "tailscale status [--active] [--web] [--json]",
 	ShortHelp:  "Show state of tailscaled and its connections",
 	LongHelp: strings.TrimSpace(`
 

cmd/tailscale/cli/switch.go

@@ -17,26 +17,22 @@ import (
 )
 
 var switchCmd = &ffcli.Command{
-	Name:      "switch",
-	ShortHelp: "Switches to a different Tailscale account",
+	Name:       "switch",
+	ShortUsage: "tailscale switch <id>",
+	ShortHelp:  "Switches to a different Tailscale account",
+	LongHelp: `"tailscale switch" switches between logged in accounts. You can
+use the ID that's returned from 'tailnet switch -list'
+to pick which profile you want to switch to. Alternatively, you
+can use the Tailnet or the account names to switch as well.
+
+This command is currently in alpha and may change in the future.`,
+
 	FlagSet: func() *flag.FlagSet {
 		fs := flag.NewFlagSet("switch", flag.ExitOnError)
 		fs.BoolVar(&switchArgs.list, "list", false, "list available accounts")
 		return fs
 	}(),
 	Exec: switchProfile,
-	UsageFunc: func(*ffcli.Command) string {
-		return `USAGE
-  switch <id>
-  switch --list
-
-"tailscale switch" switches between logged in accounts. You can
-use the ID that's returned from 'tailnet switch -list'
-to pick which profile you want to switch to. Alternatively, you
-can use the Tailnet or the account names to switch as well.
-
-This command is currently in alpha and may change in the future.`
-	},
 }
 
 var switchArgs struct {

cmd/tailscale/cli/up.go

@@ -44,7 +44,7 @@ import (
 
 var upCmd = &ffcli.Command{
 	Name:       "up",
-	ShortUsage: "up [flags]",
+	ShortUsage: "tailscale up [flags]",
 	ShortHelp:  "Connect to Tailscale, logging in if needed",
 
 	LongHelp: strings.TrimSpace(`

cmd/tailscale/cli/update.go

@@ -19,7 +19,7 @@ import (
 
 var updateCmd = &ffcli.Command{
 	Name:       "update",
-	ShortUsage: "update",
+	ShortUsage: "tailscale update",
 	ShortHelp:  "Update Tailscale to the latest/different version",
 	Exec:       runUpdate,
 	FlagSet: (func() *flag.FlagSet {

cmd/tailscale/cli/version.go

@@ -17,7 +17,7 @@ import (
 
 var versionCmd = &ffcli.Command{
 	Name:       "version",
-	ShortUsage: "version [flags]",
+	ShortUsage: "tailscale version [flags]",
 	ShortHelp:  "Print Tailscale version",
 	FlagSet: (func() *flag.FlagSet {
 		fs := newFlagSet("version")

cmd/tailscale/cli/web.go

@@ -26,7 +26,7 @@ import (
 
 var webCmd = &ffcli.Command{
 	Name:       "web",
-	ShortUsage: "web [flags]",
+	ShortUsage: "tailscale web [flags]",
 	ShortHelp:  "Run a web server for controlling Tailscale",
 
 	LongHelp: strings.TrimSpace(`

cmd/tailscale/cli/whois.go

@@ -17,13 +17,12 @@ import (
 
 var whoisCmd = &ffcli.Command{
 	Name:       "whois",
-	ShortUsage: "whois [--json] ip[:port]",
+	ShortUsage: "tailscale whois [--json] ip[:port]",
 	ShortHelp:  "Show the machine and user associated with a Tailscale IP (v4 or v6)",
 	LongHelp: strings.TrimSpace(`
 	'tailscale whois' shows the machine and user associated with a Tailscale IP (v4 or v6).
 	`),
-	UsageFunc: usageFunc,
-	Exec:      runWhoIs,
+	Exec: runWhoIs,
 	FlagSet: func() *flag.FlagSet {
 		fs := newFlagSet("whois")
 		fs.BoolVar(&whoIsArgs.json, "json", false, "output in JSON format")