@@ -2470,7 +2470,7 @@ func (cli *DockerCli) CmdLoad(args ...string) error {

 }

 func (cli *DockerCli) CmdExec(args ...string) error {

-	cmd := cli.Subcmd("exec", "CONTAINER COMMAND [ARG...]", "Run a command in an existing container")

+	cmd := cli.Subcmd("exec", "CONTAINER COMMAND [ARG...]", "Run a command in a running container")

 	execConfig, err := runconfig.ParseExec(cmd, args)

 	if err != nil {

@@ -42,7 +42,7 @@ type TtyTerminal interface {

 type Driver interface {

 	Run(c *Command, pipes *Pipes, startCallback StartCallback) (int, error) // Run executes the process and blocks until the process exits and returns the exit code

-	// Exec executes the process in an existing container, blocks until the process exits and returns the exit code

+	// Exec executes the process in a running container, blocks until the process exits and returns the exit code

 	Exec(c *Command, processConfig *ProcessConfig, pipes *Pipes, startCallback StartCallback) (int, error)

 	Kill(c *Command, sig int) error

 	Pause(c *Command) error

@@ -62,7 +62,7 @@ func init() {

 			{"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 an existing container"},

+			{"exec", "Run a command in a running container"},

 			{"export", "Stream the contents of a container as a tar archive"},

 			{"history", "Show the history of an image"},

 			{"images", "List images"},

@@ -637,7 +637,7 @@ You'll need two shells for this example.

     Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

-    Run a command in an existing container

+    Run a command in a running container

       -d, --detach=false         Detached mode: run command in the background

       -i, --interactive=false    Keep STDIN open even if not attached