Use consistent command description

Signed-off-by: Lei Jitang <leijitang@huawei.com>

api/client/attach.go

@@ -17,7 +17,7 @@ import (
 //
 // Usage: docker attach [OPTIONS] CONTAINER
 func (cli *DockerCli) CmdAttach(args ...string) error {
-	cmd := Cli.Subcmd("attach", []string{"CONTAINER"}, "Attach to a running container", true)
+	cmd := Cli.Subcmd("attach", []string{"CONTAINER"}, Cli.DockerCommands["attach"].Description, true)
 	noStdin := cmd.Bool([]string{"#nostdin", "-no-stdin"}, false, "Do not attach STDIN")
 	proxy := cmd.Bool([]string{"#sig-proxy", "-sig-proxy"}, true, "Proxy all received signals to the process")
 

api/client/build.go

@@ -49,7 +49,7 @@ const (
 //
 // Usage: docker build [OPTIONS] PATH | URL | -
 func (cli *DockerCli) CmdBuild(args ...string) error {
-	cmd := Cli.Subcmd("build", []string{"PATH | URL | -"}, "Build a new image from the source code at PATH", true)
+	cmd := Cli.Subcmd("build", []string{"PATH | URL | -"}, Cli.DockerCommands["build"].Description, true)
 	tag := cmd.String([]string{"t", "-tag"}, "", "Repository name (and optionally a tag) for the image")
 	suppressOutput := cmd.Bool([]string{"q", "-quiet"}, false, "Suppress the verbose output generated by the containers")
 	noCache := cmd.Bool([]string{"#no-cache", "-no-cache"}, false, "Do not use cache when building the image")

api/client/commit.go

@@ -18,7 +18,7 @@ import (
 //
 // Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
 func (cli *DockerCli) CmdCommit(args ...string) error {
-	cmd := Cli.Subcmd("commit", []string{"CONTAINER [REPOSITORY[:TAG]]"}, "Create a new image from a container's changes", true)
+	cmd := Cli.Subcmd("commit", []string{"CONTAINER [REPOSITORY[:TAG]]"}, Cli.DockerCommands["commit"].Description, true)
 	flPause := cmd.Bool([]string{"p", "-pause"}, true, "Pause container during commit")
 	flComment := cmd.String([]string{"m", "-message"}, "", "Commit message")
 	flAuthor := cmd.String([]string{"a", "#author", "-author"}, "", "Author (e.g., \"John Hannibal Smith <hannibal@a-team.com>\")")

api/client/cp.go

@@ -43,8 +43,8 @@ func (cli *DockerCli) CmdCp(args ...string) error {
 		"cp",
 		[]string{"CONTAINER:PATH LOCALPATH|-", "LOCALPATH|- CONTAINER:PATH"},
 		strings.Join([]string{
-			"Copy files/folders between a container and your host.\n",
-			"Use '-' as the source to read a tar archive from stdin\n",
+			Cli.DockerCommands["cp"].Description,
+			"\nUse '-' as the source to read a tar archive from stdin\n",
 			"and extract it to a directory destination in a container.\n",
 			"Use '-' as the destination to stream a tar archive of a\n",
 			"container source to stdout.",

api/client/create.go

@@ -159,7 +159,7 @@ func (cli *DockerCli) createContainer(config *runconfig.Config, hostConfig *runc
 //
 // Usage: docker create [OPTIONS] IMAGE [COMMAND] [ARG...]
 func (cli *DockerCli) CmdCreate(args ...string) error {
-	cmd := Cli.Subcmd("create", []string{"IMAGE [COMMAND] [ARG...]"}, "Create a new container", true)
+	cmd := Cli.Subcmd("create", []string{"IMAGE [COMMAND] [ARG...]"}, Cli.DockerCommands["create"].Description, true)
 	addTrustedFlags(cmd, true)
 
 	// These are flags not stored in Config/HostConfig

api/client/diff.go

@@ -18,7 +18,7 @@ import (
 //
 // Usage: docker diff CONTAINER
 func (cli *DockerCli) CmdDiff(args ...string) error {
-	cmd := Cli.Subcmd("diff", []string{"CONTAINER"}, "Inspect changes on a container's filesystem", true)
+	cmd := Cli.Subcmd("diff", []string{"CONTAINER"}, Cli.DockerCommands["diff"].Description, true)
 	cmd.Require(flag.Exact, 1)
 
 	cmd.ParseFlags(args, true)

api/client/events.go

@@ -15,7 +15,7 @@ import (
 //
 // Usage: docker events [OPTIONS]
 func (cli *DockerCli) CmdEvents(args ...string) error {
-	cmd := Cli.Subcmd("events", nil, "Get real time events from the server", true)
+	cmd := Cli.Subcmd("events", nil, Cli.DockerCommands["events"].Description, true)
 	since := cmd.String([]string{"#since", "-since"}, "", "Show all events created since timestamp")
 	until := cmd.String([]string{"-until"}, "", "Stream events until this timestamp")
 	flFilter := opts.NewListOpts(nil)

api/client/exec.go

@@ -16,7 +16,7 @@ import (
 //
 // Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...]
 func (cli *DockerCli) CmdExec(args ...string) error {
-	cmd := Cli.Subcmd("exec", []string{"CONTAINER COMMAND [ARG...]"}, "Run a command in a running container", true)
+	cmd := Cli.Subcmd("exec", []string{"CONTAINER COMMAND [ARG...]"}, Cli.DockerCommands["exec"].Description, true)
 
 	execConfig, err := runconfig.ParseExec(cmd, args)
 	// just in case the ParseExec does not exit

api/client/export.go

@@ -14,7 +14,7 @@ import (
 //
 // Usage: docker export [OPTIONS] CONTAINER
 func (cli *DockerCli) CmdExport(args ...string) error {
-	cmd := Cli.Subcmd("export", []string{"CONTAINER"}, "Export the contents of a container's filesystem as a tar archive", true)
+	cmd := Cli.Subcmd("export", []string{"CONTAINER"}, Cli.DockerCommands["export"].Description, true)
 	outfile := cmd.String([]string{"o", "-output"}, "", "Write to a file, instead of STDOUT")
 	cmd.Require(flag.Exact, 1)
 

api/client/history.go

@@ -19,7 +19,7 @@ import (
 //
 // Usage: docker history [OPTIONS] IMAGE
 func (cli *DockerCli) CmdHistory(args ...string) error {
-	cmd := Cli.Subcmd("history", []string{"IMAGE"}, "Show the history of an image", true)
+	cmd := Cli.Subcmd("history", []string{"IMAGE"}, Cli.DockerCommands["history"].Description, true)
 	human := cmd.Bool([]string{"H", "-human"}, true, "Print sizes and dates in human readable format")
 	quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
 	noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")

api/client/images.go

@@ -22,7 +22,7 @@ import (
 //
 // Usage: docker images [OPTIONS] [REPOSITORY]
 func (cli *DockerCli) CmdImages(args ...string) error {
-	cmd := Cli.Subcmd("images", []string{"[REPOSITORY[:TAG]]"}, "List images", true)
+	cmd := Cli.Subcmd("images", []string{"[REPOSITORY[:TAG]]"}, Cli.DockerCommands["images"].Description, true)
 	quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
 	all := cmd.Bool([]string{"a", "-all"}, false, "Show all images (default hides intermediate images)")
 	noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")

api/client/import.go

@@ -20,7 +20,7 @@ import (
 //
 // Usage: docker import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]
 func (cli *DockerCli) CmdImport(args ...string) error {
-	cmd := Cli.Subcmd("import", []string{"file|URL|- [REPOSITORY[:TAG]]"}, "Create an empty filesystem image and import the contents of the\ntarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) into it, then\noptionally tag it.", true)
+	cmd := Cli.Subcmd("import", []string{"file|URL|- [REPOSITORY[:TAG]]"}, Cli.DockerCommands["import"].Description, true)
 	flChanges := opts.NewListOpts(nil)
 	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
 	message := cmd.String([]string{"m", "-message"}, "", "Set commit message for imported image")

api/client/info.go

@@ -16,7 +16,7 @@ import (
 //
 // Usage: docker info
 func (cli *DockerCli) CmdInfo(args ...string) error {
-	cmd := Cli.Subcmd("info", nil, "Display system-wide information", true)
+	cmd := Cli.Subcmd("info", nil, Cli.DockerCommands["info"].Description, true)
 	cmd.Require(flag.Exact, 0)
 
 	cmd.ParseFlags(args, true)

api/client/inspect.go

@@ -24,7 +24,7 @@ var funcMap = template.FuncMap{
 //
 // Usage: docker inspect [OPTIONS] CONTAINER|IMAGE [CONTAINER|IMAGE...]
 func (cli *DockerCli) CmdInspect(args ...string) error {
-	cmd := Cli.Subcmd("inspect", []string{"CONTAINER|IMAGE [CONTAINER|IMAGE...]"}, "Return low-level information on a container or image", true)
+	cmd := Cli.Subcmd("inspect", []string{"CONTAINER|IMAGE [CONTAINER|IMAGE...]"}, Cli.DockerCommands["inspect"].Description, true)
 	tmplStr := cmd.String([]string{"f", "#format", "-format"}, "", "Format the output using the given go template")
 	inspectType := cmd.String([]string{"-type"}, "", "Return JSON for specified type, (e.g image or container)")
 	cmd.Require(flag.Min, 1)

api/client/kill.go

@@ -11,7 +11,7 @@ import (
 //
 // Usage: docker kill [OPTIONS] CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdKill(args ...string) error {
-	cmd := Cli.Subcmd("kill", []string{"CONTAINER [CONTAINER...]"}, "Kill a running container using SIGKILL or a specified signal", true)
+	cmd := Cli.Subcmd("kill", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["kill"].Description, true)
 	signal := cmd.String([]string{"s", "-signal"}, "KILL", "Signal to send to the container")
 	cmd.Require(flag.Min, 1)
 

api/client/load.go

@@ -14,7 +14,7 @@ import (
 //
 // Usage: docker load [OPTIONS]
 func (cli *DockerCli) CmdLoad(args ...string) error {
-	cmd := Cli.Subcmd("load", nil, "Load an image from a tar archive or STDIN", true)
+	cmd := Cli.Subcmd("load", nil, Cli.DockerCommands["load"].Description, true)
 	infile := cmd.String([]string{"i", "-input"}, "", "Read from a tar archive file, instead of STDIN")
 	cmd.Require(flag.Exact, 0)
 

api/client/login.go

@@ -22,7 +22,7 @@ import (
 //
 // Usage: docker login SERVER
 func (cli *DockerCli) CmdLogin(args ...string) error {
-	cmd := Cli.Subcmd("login", []string{"[SERVER]"}, "Register or log in to a Docker registry server, if no server is\nspecified \""+registry.IndexServer+"\" is the default.", true)
+	cmd := Cli.Subcmd("login", []string{"[SERVER]"}, Cli.DockerCommands["login"].Description+".\nIf no server is specified \""+registry.IndexServer+"\" is the default.", true)
 	cmd.Require(flag.Max, 1)
 
 	var username, password, email string

api/client/logout.go

@@ -14,7 +14,7 @@ import (
 //
 // Usage: docker logout [SERVER]
 func (cli *DockerCli) CmdLogout(args ...string) error {
-	cmd := Cli.Subcmd("logout", []string{"[SERVER]"}, "Log out from a Docker registry, if no server is\nspecified \""+registry.IndexServer+"\" is the default.", true)
+	cmd := Cli.Subcmd("logout", []string{"[SERVER]"}, Cli.DockerCommands["logout"].Description+".\nIf no server is specified \""+registry.IndexServer+"\" is the default.", true)
 	cmd.Require(flag.Max, 1)
 
 	cmd.ParseFlags(args, true)

api/client/logs.go

@@ -15,7 +15,7 @@ import (
 //
 // docker logs [OPTIONS] CONTAINER
 func (cli *DockerCli) CmdLogs(args ...string) error {
-	cmd := Cli.Subcmd("logs", []string{"CONTAINER"}, "Fetch the logs of a container", true)
+	cmd := Cli.Subcmd("logs", []string{"CONTAINER"}, Cli.DockerCommands["logs"].Description, true)
 	follow := cmd.Bool([]string{"f", "-follow"}, false, "Follow log output")
 	since := cmd.String([]string{"-since"}, "", "Show logs since timestamp")
 	times := cmd.Bool([]string{"t", "-timestamps"}, false, "Show timestamps")

api/client/pause.go

@@ -11,7 +11,7 @@ import (
 //
 // Usage: docker pause CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdPause(args ...string) error {
-	cmd := Cli.Subcmd("pause", []string{"CONTAINER [CONTAINER...]"}, "Pause all processes within a container", true)
+	cmd := Cli.Subcmd("pause", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["pause"].Description, true)
 	cmd.Require(flag.Min, 1)
 
 	cmd.ParseFlags(args, true)

api/client/port.go

@@ -15,7 +15,7 @@ import (
 //
 // Usage: docker port CONTAINER [PRIVATE_PORT[/PROTO]]
 func (cli *DockerCli) CmdPort(args ...string) error {
-	cmd := Cli.Subcmd("port", []string{"CONTAINER [PRIVATE_PORT[/PROTO]]"}, "List port mappings for the CONTAINER, or lookup the public-facing port that\nis NAT-ed to the PRIVATE_PORT", true)
+	cmd := Cli.Subcmd("port", []string{"CONTAINER [PRIVATE_PORT[/PROTO]]"}, Cli.DockerCommands["port"].Description, true)
 	cmd.Require(flag.Min, 1)
 
 	cmd.ParseFlags(args, true)

api/client/ps.go

@@ -23,7 +23,7 @@ func (cli *DockerCli) CmdPs(args ...string) error {
 		psFilterArgs = filters.Args{}
 		v            = url.Values{}
 
-		cmd      = Cli.Subcmd("ps", nil, "List containers", true)
+		cmd      = Cli.Subcmd("ps", nil, Cli.DockerCommands["ps"].Description, true)
 		quiet    = cmd.Bool([]string{"q", "-quiet"}, false, "Only display numeric IDs")
 		size     = cmd.Bool([]string{"s", "-size"}, false, "Display total file sizes")
 		all      = cmd.Bool([]string{"a", "-all"}, false, "Show all containers (default shows just running)")

api/client/pull.go

@@ -15,7 +15,7 @@ import (
 //
 // Usage: docker pull [OPTIONS] IMAGENAME[:TAG|@DIGEST]
 func (cli *DockerCli) CmdPull(args ...string) error {
-	cmd := Cli.Subcmd("pull", []string{"NAME[:TAG|@DIGEST]"}, "Pull an image or a repository from a registry", true)
+	cmd := Cli.Subcmd("pull", []string{"NAME[:TAG|@DIGEST]"}, Cli.DockerCommands["pull"].Description, true)
 	allTags := cmd.Bool([]string{"a", "-all-tags"}, false, "Download all tagged images in the repository")
 	addTrustedFlags(cmd, true)
 	cmd.Require(flag.Exact, 1)

api/client/push.go

@@ -14,7 +14,7 @@ import (
 //
 // Usage: docker push NAME[:TAG]
 func (cli *DockerCli) CmdPush(args ...string) error {
-	cmd := Cli.Subcmd("push", []string{"NAME[:TAG]"}, "Push an image or a repository to a registry", true)
+	cmd := Cli.Subcmd("push", []string{"NAME[:TAG]"}, Cli.DockerCommands["push"].Description, true)
 	addTrustedFlags(cmd, false)
 	cmd.Require(flag.Exact, 1)
 

api/client/rename.go

@@ -12,7 +12,7 @@ import (
 //
 // Usage: docker rename OLD_NAME NEW_NAME
 func (cli *DockerCli) CmdRename(args ...string) error {
-	cmd := Cli.Subcmd("rename", []string{"OLD_NAME NEW_NAME"}, "Rename a container", true)
+	cmd := Cli.Subcmd("rename", []string{"OLD_NAME NEW_NAME"}, Cli.DockerCommands["rename"].Description, true)
 	cmd.Require(flag.Exact, 2)
 
 	cmd.ParseFlags(args, true)

api/client/restart.go

@@ -13,7 +13,7 @@ import (
 //
 // Usage: docker restart [OPTIONS] CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdRestart(args ...string) error {
-	cmd := Cli.Subcmd("restart", []string{"CONTAINER [CONTAINER...]"}, "Restart a container", true)
+	cmd := Cli.Subcmd("restart", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["restart"].Description, true)
 	nSeconds := cmd.Int([]string{"t", "-time"}, 10, "Seconds to wait for stop before killing the container")
 	cmd.Require(flag.Min, 1)
 

api/client/rm.go

@@ -13,7 +13,7 @@ import (
 //
 // Usage: docker rm [OPTIONS] CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdRm(args ...string) error {
-	cmd := Cli.Subcmd("rm", []string{"CONTAINER [CONTAINER...]"}, "Remove one or more containers", true)
+	cmd := Cli.Subcmd("rm", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["rm"].Description, true)
 	v := cmd.Bool([]string{"v", "-volumes"}, false, "Remove the volumes associated with the container")
 	link := cmd.Bool([]string{"l", "#link", "-link"}, false, "Remove the specified link")
 	force := cmd.Bool([]string{"f", "-force"}, false, "Force the removal of a running container (uses SIGKILL)")

api/client/rmi.go

@@ -14,7 +14,7 @@ import (
 //
 // Usage: docker rmi [OPTIONS] IMAGE [IMAGE...]
 func (cli *DockerCli) CmdRmi(args ...string) error {
-	cmd := Cli.Subcmd("rmi", []string{"IMAGE [IMAGE...]"}, "Remove one or more images", true)
+	cmd := Cli.Subcmd("rmi", []string{"IMAGE [IMAGE...]"}, Cli.DockerCommands["rmi"].Description, true)
 	force := cmd.Bool([]string{"f", "-force"}, false, "Force removal of the image")
 	noprune := cmd.Bool([]string{"-no-prune"}, false, "Do not delete untagged parents")
 	cmd.Require(flag.Min, 1)

api/client/run.go

@@ -40,7 +40,7 @@ func (cid *cidFile) Write(id string) error {
 //
 // Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
 func (cli *DockerCli) CmdRun(args ...string) error {
-	cmd := Cli.Subcmd("run", []string{"IMAGE [COMMAND] [ARG...]"}, "Run a command in a new container", true)
+	cmd := Cli.Subcmd("run", []string{"IMAGE [COMMAND] [ARG...]"}, Cli.DockerCommands["run"].Description, true)
 	addTrustedFlags(cmd, true)
 
 	// These are flags not stored in Config/HostConfig

api/client/save.go

@@ -15,7 +15,7 @@ import (
 //
 // Usage: docker save [OPTIONS] IMAGE [IMAGE...]
 func (cli *DockerCli) CmdSave(args ...string) error {
-	cmd := Cli.Subcmd("save", []string{"IMAGE [IMAGE...]"}, "Save an image(s) to a tar archive (streamed to STDOUT by default)", true)
+	cmd := Cli.Subcmd("save", []string{"IMAGE [IMAGE...]"}, Cli.DockerCommands["save"].Description+" (streamed to STDOUT by default)", true)
 	outfile := cmd.String([]string{"o", "-output"}, "", "Write to a file, instead of STDOUT")
 	cmd.Require(flag.Min, 1)
 

api/client/search.go

@@ -26,7 +26,7 @@ func (r ByStars) Less(i, j int) bool { return r[i].StarCount < r[j].StarCount }
 //
 // Usage: docker search [OPTIONS] TERM
 func (cli *DockerCli) CmdSearch(args ...string) error {
-	cmd := Cli.Subcmd("search", []string{"TERM"}, "Search the Docker Hub for images", true)
+	cmd := Cli.Subcmd("search", []string{"TERM"}, Cli.DockerCommands["search"].Description, true)
 	noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")
 	trusted := cmd.Bool([]string{"#t", "#trusted", "#-trusted"}, false, "Only show trusted builds")
 	automated := cmd.Bool([]string{"-automated"}, false, "Only show automated builds")

api/client/start.go

@@ -45,7 +45,7 @@ func (cli *DockerCli) forwardAllSignals(cid string) chan os.Signal {
 //
 // Usage: docker start [OPTIONS] CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdStart(args ...string) error {
-	cmd := Cli.Subcmd("start", []string{"CONTAINER [CONTAINER...]"}, "Start one or more containers", true)
+	cmd := Cli.Subcmd("start", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["start"].Description, true)
 	attach := cmd.Bool([]string{"a", "-attach"}, false, "Attach STDOUT/STDERR and forward signals")
 	openStdin := cmd.Bool([]string{"i", "-interactive"}, false, "Attach container's STDIN")
 	cmd.Require(flag.Min, 1)

api/client/stats.go

@@ -141,7 +141,7 @@ func (s *containerStats) Display(w io.Writer) error {
 //
 // Usage: docker stats CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdStats(args ...string) error {
-	cmd := Cli.Subcmd("stats", []string{"CONTAINER [CONTAINER...]"}, "Display a live stream of one or more containers' resource usage statistics", true)
+	cmd := Cli.Subcmd("stats", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["stats"].Description, true)
 	noStream := cmd.Bool([]string{"-no-stream"}, false, "Disable streaming stats and only pull the first result")
 	cmd.Require(flag.Min, 1)
 

api/client/stop.go

@@ -15,7 +15,7 @@ import (
 //
 // Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdStop(args ...string) error {
-	cmd := Cli.Subcmd("stop", []string{"CONTAINER [CONTAINER...]"}, "Stop a container by sending SIGTERM and then SIGKILL after a\ngrace period", true)
+	cmd := Cli.Subcmd("stop", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["stop"].Description+".\nSending SIGTERM and then SIGKILL after a grace period", true)
 	nSeconds := cmd.Int([]string{"t", "-time"}, 10, "Seconds to wait for stop before killing it")
 	cmd.Require(flag.Min, 1)
 

api/client/tag.go

@@ -13,7 +13,7 @@ import (
 //
 // Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]
 func (cli *DockerCli) CmdTag(args ...string) error {
-	cmd := Cli.Subcmd("tag", []string{"IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]"}, "Tag an image into a repository", true)
+	cmd := Cli.Subcmd("tag", []string{"IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]"}, Cli.DockerCommands["tag"].Description, true)
 	force := cmd.Bool([]string{"f", "#force", "-force"}, false, "Force")
 	cmd.Require(flag.Exact, 2)
 

api/client/top.go

@@ -16,7 +16,7 @@ import (
 //
 // Usage: docker top CONTAINER
 func (cli *DockerCli) CmdTop(args ...string) error {
-	cmd := Cli.Subcmd("top", []string{"CONTAINER [ps OPTIONS]"}, "Display the running processes of a container", true)
+	cmd := Cli.Subcmd("top", []string{"CONTAINER [ps OPTIONS]"}, Cli.DockerCommands["top"].Description, true)
 	cmd.Require(flag.Min, 1)
 
 	cmd.ParseFlags(args, true)

api/client/unpause.go

@@ -11,7 +11,7 @@ import (
 //
 // Usage: docker unpause CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdUnpause(args ...string) error {
-	cmd := Cli.Subcmd("unpause", []string{"CONTAINER [CONTAINER...]"}, "Unpause all processes within a container", true)
+	cmd := Cli.Subcmd("unpause", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["unpause"].Description, true)
 	cmd.Require(flag.Min, 1)
 
 	cmd.ParseFlags(args, true)

api/client/version.go

@@ -43,7 +43,7 @@ type versionData struct {
 //
 // Usage: docker version
 func (cli *DockerCli) CmdVersion(args ...string) (err error) {
-	cmd := Cli.Subcmd("version", nil, "Show the Docker version information.", true)
+	cmd := Cli.Subcmd("version", nil, Cli.DockerCommands["version"].Description, true)
 	tmplStr := cmd.String([]string{"f", "#format", "-format"}, "", "Format the output using the given go template")
 	cmd.Require(flag.Exact, 0)
 

api/client/volume.go

@@ -20,7 +20,7 @@ import (
 //
 // Usage: docker volume <COMMAND> <OPTS>
 func (cli *DockerCli) CmdVolume(args ...string) error {
-	description := "Manage Docker volumes\n\nCommands:\n"
+	description := Cli.DockerCommands["volume"].Description + "\n\nCommands:\n"
 	commands := [][]string{
 		{"create", "Create a volume"},
 		{"inspect", "Return low-level information on a volume"},

api/client/wait.go

@@ -13,7 +13,7 @@ import (
 //
 // Usage: docker wait CONTAINER [CONTAINER...]
 func (cli *DockerCli) CmdWait(args ...string) error {
-	cmd := Cli.Subcmd("wait", []string{"CONTAINER [CONTAINER...]"}, "Block until a container stops, then print its exit code.", true)
+	cmd := Cli.Subcmd("wait", []string{"CONTAINER [CONTAINER...]"}, Cli.DockerCommands["wait"].Description, true)
 	cmd.Require(flag.Min, 1)
 
 	cmd.ParseFlags(args, true)

cli/common.go

@@ -18,3 +18,61 @@ type CommonFlags struct {
 	TLSOptions *tlsconfig.Options
 	TrustKey   string
 }
+
+// Command is the struct contains command name and description
+type Command struct {
+	Name        string
+	Description string
+}
+
+var dockerCommands = []Command{
+	{"attach", "Attach to a running container"},
+	{"build", "Build an image from a Dockerfile"},
+	{"commit", "Create a new image from a container's changes"},
+	{"cp", "Copy files/folders between a container and the local filesystem"},
+	{"create", "Create a new container"},
+	{"diff", "Inspect changes on a container's filesystem"},
+	{"events", "Get real time events from the server"},
+	{"exec", "Run a command in a running container"},
+	{"export", "Export a container's filesystem as a tar archive"},
+	{"history", "Show the history of an image"},
+	{"images", "List images"},
+	{"import", "Import the contents from a tarball to create a filesystem image"},
+	{"info", "Display system-wide information"},
+	{"inspect", "Return low-level information on a container or image"},
+	{"kill", "Kill a running container"},
+	{"load", "Load an image from a tar archive or STDIN"},
+	{"login", "Register or log in to a Docker registry"},
+	{"logout", "Log out from a Docker registry"},
+	{"logs", "Fetch the logs of a container"},
+	{"pause", "Pause all processes within a container"},
+	{"port", "List port mappings or a specific mapping for the CONTAINER"},
+	{"ps", "List containers"},
+	{"pull", "Pull an image or a repository from a registry"},
+	{"push", "Push an image or a repository to a registry"},
+	{"rename", "Rename a container"},
+	{"restart", "Restart a container"},
+	{"rm", "Remove one or more containers"},
+	{"rmi", "Remove one or more images"},
+	{"run", "Run a command in a new container"},
+	{"save", "Save an image(s) to a tar archive"},
+	{"search", "Search the Docker Hub for images"},
+	{"start", "Start one or more stopped containers"},
+	{"stats", "Display a live stream of container(s) resource usage statistics"},
+	{"stop", "Stop a running container"},
+	{"tag", "Tag an image into a repository"},
+	{"top", "Display the running processes of a container"},
+	{"unpause", "Unpause all processes within a container"},
+	{"version", "Show the Docker version information"},
+	{"volume", "Manage Docker volumes"},
+	{"wait", "Block until a container stops, then print its exit code"},
+}
+
+// DockerCommands stores all the docker command
+var DockerCommands = make(map[string]Command)
+
+func init() {
+	for _, cmd := range dockerCommands {
+		DockerCommands[cmd.Name] = cmd
+	}
+}

docker/docker.go

@@ -36,7 +36,7 @@ func main() {
 		help := "\nCommands:\n"
 
 		for _, cmd := range dockerCommands {
-			help += fmt.Sprintf("    %-10.10s%s\n", cmd.name, cmd.description)
+			help += fmt.Sprintf("    %-10.10s%s\n", cmd.Name, cmd.Description)
 		}
 
 		help += "\nRun 'docker COMMAND --help' for more information on a command."

docker/flags.go

@@ -1,64 +1,30 @@
 package main
 
-import flag "github.com/docker/docker/pkg/mflag"
+import (
+	"sort"
+
+	"github.com/docker/docker/cli"
+	flag "github.com/docker/docker/pkg/mflag"
+)
 
 var (
 	flHelp    = flag.Bool([]string{"h", "-help"}, false, "Print usage")
 	flVersion = flag.Bool([]string{"v", "-version"}, false, "Print version information and quit")
 )
 
-type command struct {
-	name        string
-	description string
-}
-
-type byName []command
+type byName []cli.Command
 
 func (a byName) Len() int           { return len(a) }
 func (a byName) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
-func (a byName) Less(i, j int) bool { return a[i].name < a[j].name }
+func (a byName) Less(i, j int) bool { return a[i].Name < a[j].Name }
+
+var dockerCommands []cli.Command
 
 // TODO(tiborvass): do not show 'daemon' on client-only binaries
-// and deduplicate description in dockerCommands and cli subcommands
-var dockerCommands = []command{
-	{"attach", "Attach to a running container"},
-	{"build", "Build an image from a Dockerfile"},
-	{"commit", "Create a new image from a container's changes"},
-	{"cp", "Copy files/folders between a container and the local filesystem"},
-	{"create", "Create a new container"},
-	{"diff", "Inspect changes on a container's filesystem"},
-	{"events", "Get real time events from the server"},
-	{"exec", "Run a command in a running container"},
-	{"export", "Export a container's filesystem as a tar archive"},
-	{"history", "Show the history of an image"},
-	{"images", "List images"},
-	{"import", "Import the contents from a tarball to create a filesystem image"},
-	{"info", "Display system-wide information"},
-	{"inspect", "Return low-level information on a container or image"},
-	{"kill", "Kill a running container"},
-	{"load", "Load an image from a tar archive or STDIN"},
-	{"login", "Register or log in to a Docker registry"},
-	{"logout", "Log out from a Docker registry"},
-	{"logs", "Fetch the logs of a container"},
-	{"pause", "Pause all processes within a container"},
-	{"port", "List port mappings or a specific mapping for the CONTAINER"},
-	{"ps", "List containers"},
-	{"pull", "Pull an image or a repository from a registry"},
-	{"push", "Push an image or a repository to a registry"},
-	{"rename", "Rename a container"},
-	{"restart", "Restart a container"},
-	{"rm", "Remove one or more containers"},
-	{"rmi", "Remove one or more images"},
-	{"run", "Run a command in a new container"},
-	{"save", "Save an image(s) to a tar archive"},
-	{"search", "Search the Docker Hub for images"},
-	{"start", "Start one or more containers"},
-	{"stats", "Display a live stream of container(s) resource usage statistics"},
-	{"stop", "Stop a container"},
-	{"tag", "Tag an image into a repository"},
-	{"top", "Display the running processes of a container"},
-	{"unpause", "Unpause all processes within a container"},
-	{"version", "Show the Docker version information"},
-	{"volume", "Manage Docker volumes"},
-	{"wait", "Block until a container stops, then print its exit code"},
+
+func init() {
+	for _, cmd := range cli.DockerCommands {
+		dockerCommands = append(dockerCommands, cmd)
+	}
+	sort.Sort(byName(dockerCommands))
 }

docker/flags_experimental.go

@@ -2,10 +2,14 @@
 
 package main
 
-import "sort"
+import (
+	"sort"
+
+	"github.com/docker/docker/cli"
+)
 
 func init() {
-	dockerCommands = append(dockerCommands, command{"network", "Network management"})
+	dockerCommands = append(dockerCommands, cli.Command{Name: "network", Description: "Network management"})
 
 	//Sorting logic required here to pass Command Sort Test.
 	sort.Sort(byName(dockerCommands))