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Modify usage of docker exec command in exec.md Signed-off-by: lixiaobing10051267 <li.xiaobing1@zte.com.cn>

Signed-off-by: lixiaobing10051267 <li.xiaobing1@zte.com.cn>

lixiaobing10051267 authored on 2016/08/30 16:51:01
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@@ -28,7 +28,7 @@ func NewExecCommand(dockerCli *client.DockerCli) *cobra.Command {
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 	var opts execOptions
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 	cmd := &cobra.Command{
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-		Use:   "exec CONTAINER COMMAND [ARG...]",
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+		Use:   "exec [OPTIONS] CONTAINER COMMAND [ARG...]",
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 		Short: "Run a command in a running container",
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 		Args:  cli.RequiresMinArgs(2),
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 		RunE: func(cmd *cobra.Command, args []string) error {