@@ -153,9 +153,6 @@ func printService(out io.Writer, service swarm.Service) {

 func printContainerSpec(out io.Writer, containerSpec swarm.ContainerSpec) {

 	fmt.Fprintf(out, " Image:\t\t%s\n", containerSpec.Image)

-	if len(containerSpec.Command) > 0 {

-		fmt.Fprintf(out, " Command:\t%s\n", strings.Join(containerSpec.Command, " "))

-	}

 	if len(containerSpec.Args) > 0 {

 		fmt.Fprintf(out, " Args:\t\t%s\n", strings.Join(containerSpec.Args, " "))

 	}

@@ -373,7 +373,6 @@ type serviceOptions struct {

 	name    string

 	labels  opts.ListOpts

 	image   string

-	command []string

 	args    []string

 	env     opts.ListOpts

 	workdir string

@@ -416,7 +415,6 @@ func (opts *serviceOptions) ToService() (swarm.ServiceSpec, error) {

 		TaskTemplate: swarm.TaskSpec{

 			ContainerSpec: swarm.ContainerSpec{

 				Image:           opts.image,

-				Command:         opts.command,

 				Args:            opts.args,

 				Env:             opts.env.GetAll(),

 				Dir:             opts.workdir,

@@ -31,7 +31,6 @@ func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command {

 	flags := cmd.Flags()

 	flags.String("image", "", "Service image tag")

-	flags.StringSlice("command", []string{}, "Service command")

 	flags.StringSlice("arg", []string{}, "Service command args")

 	addServiceFlags(cmd, opts)

 	return cmd

@@ -141,7 +140,6 @@ func updateService(flags *pflag.FlagSet, spec *swarm.ServiceSpec) error {

 	updateString(flagName, &spec.Name)

 	updateLabels(flags, &spec.Labels)

 	updateString("image", &cspec.Image)

-	updateSlice("command", &cspec.Command)

 	updateSlice("arg", &cspec.Args)

 	updateListOpts("env", &cspec.Env)

 	updateString("workdir", &cspec.Dir)

@@ -7,20 +7,15 @@ import (

 	"github.com/docker/engine-api/types/swarm"

 )

-func TestUpdateServiceCommandAndArgs(t *testing.T) {

+func TestUpdateServiceArgs(t *testing.T) {

 	flags := newUpdateCommand(nil).Flags()

-	flags.Set("command", "the")

-	flags.Set("command", "new")

-	flags.Set("command", "command")

 	flags.Set("arg", "the")

 	flags.Set("arg", "new args")

 	spec := &swarm.ServiceSpec{}

 	cspec := &spec.TaskTemplate.ContainerSpec

-	cspec.Command = []string{"old", "command"}

 	cspec.Args = []string{"old", "args"}

 	updateService(flags, spec)

-	assert.EqualStringSlice(t, cspec.Command, []string{"the", "new", "command"})

 	assert.EqualStringSlice(t, cspec.Args, []string{"the", "new args"})

 }

@@ -1736,7 +1736,6 @@ _docker_service_update() {

 	if [ "$subcommand" = "update" ] ; then

 		options_with_args="$options_with_args

 			--arg

-			--command

 			--image

 		"

@@ -1154,7 +1154,6 @@ __docker_service_subcommand() {

                 $opts_help \

                 $opts_create_update \

                 "($help)--arg=[Service command args]:arguments: _normal" \

-                "($help)--command=[Service command]:command: _command_names -e" \

                 "($help)--image=[Service image tag]:image:__docker_repositories" \

                 "($help -)1:service:__docker_complete_services" && ret=0

             ;;

@@ -18,7 +18,6 @@ Update a service

 Options:

       --arg value                    Service command args (default [])

-      --command value                Service command (default [])

       --constraint value             Placement constraints (default [])

       --endpoint-mode string         Endpoint mode (vip or dnsrr)

   -e, --env value                    Set environment variables (default [])