return new ExecResult(stderr: stderr, stdout: stdout, returnCode: returnCode)
    }

    static String getStdout(String command) {
        ExecResult execResult = exec(command)

        assert execResult.returnCode == 0: "$command failed with return code: $execResult"
        return execResult.stdout
    }

    static Future<String> readStreamAsync(InputStream inputStream) {

		"Rename resources before comparison.\n"+
			"The format of each renaming pair is A->B, all renaming pairs are comma separated.\n"+
			"e.g. Service:*:istiod->Service:*:istio-control - rename istiod service into istio-control")
}

func manifestDiffCmd(diffArgs *manifestDiffArgs) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "diff <file|dir> <file|dir>",
		Short: "Compare manifests and generate diff",

	return &cobra.Command{
		Use:   "dump",
		Short: "Dumps the Istio operator controller manifest.",
		Long:  "The dump subcommand dumps the Istio operator controller manifest.",
		Args:  cobra.ExactArgs(0),
		PreRunE: func(cmd *cobra.Command, args []string) error {
			if !labels.IsDNS1123Label(odArgs.common.revision) && cmd.PersistentFlags().Changed("revision") {
				return fmt.Errorf("invalid revision specified: %v", odArgs.common.revision)

func TestWorkloadGroupCreate(t *testing.T) {
	cases := []testcase{
		{
			description:       "Invalid command args - missing service name and namespace",
			args:              strings.Split("group create", " "),
			expectedException: true,
			expectedOutput:    "Error: expecting a workload name\n",
		},
		{
			description:       "Invalid command args - missing service name",
			args:              strings.Split("group create -n bar", " "),

### ufw

For hosts with ufw enabled (Debian based distros), you can use `ufw` command to allow traffic to specific ports. Use below command to allow access to port 9000

```sh
ufw allow 9000
```

Below command enables all incoming traffic to ports ranging from 9000 to 9010.

```sh
ufw allow 9000:9010/tcp
```

### firewall-cmd

			files = append(files, string(line))
		}
	}
	return files
}

func parseMobileProvision(fname string) *exec.Cmd {
	return exec.Command("security", "cms", "-D", "-i", string(fname))
}

func plistExtract(fname string, path string) ([]byte, error) {
	out, err := exec.Command("/usr/libexec/PlistBuddy", "-c", "Print "+path, fname).CombinedOutput()
	if err != nil {
		return nil, err
	}
	return bytes.TrimSpace(out), nil
}

		l.LogAndPrintf("Upgrading operator controller in namespace: %s using image: %s/operator:%s",
			oiArgs.common.operatorNamespace, oiArgs.common.hub, oiArgs.common.tag)
	} else {
		l.LogAndPrintf("Installing operator controller in namespace: %s using image: %s/operator:%s",
			oiArgs.common.operatorNamespace, oiArgs.common.hub, oiArgs.common.tag)
	}

## Tools {#tools}

### Go command {#go-command}

	data, err := io.ReadAll(file)
	if err != nil {
		return nil, err
	}
	return data, nil
}

func StableXdsStatusCommand(ctx cli.Context) *cobra.Command {
	cmd := XdsStatusCommand(ctx)
	unstableFlags := []string{"xds-via-agents", "xds-via-agents-limit"}
	cmd.PreRunE = func(cmd *cobra.Command, args []string) error {
		for _, flag := range unstableFlags {
			if cmd.PersistentFlags().Changed(flag) {

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.util.concurrent.AbstractScheduledService.Scheduler.newFixedDelaySchedule;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static java.util.concurrent.TimeUnit.MILLISECONDS;