istioctl x precheck

  # Check only a single namespace
  istioctl x precheck --namespace default

  # Check for behavioral changes since a specific version
  istioctl x precheck --from-version 1.10`,
		RunE: func(cmd *cobra.Command, args []string) (err error) {
			msgs := diag.Messages{}
			if !skipControlPlane {
				msgs, err = checkControlPlane(ctx)
				if err != nil {
					return err
				}
			}

		// add underscore if last letter is capital letter
		// add underscore when previous letter is lowercase
		// add underscore when next letter is lowercase
		if (i != 0 || i == l-1) && ((i > 0 && rune(camel[i-1]) >= 'a') ||
			(i < l-1 && rune(camel[i+1]) >= 'a')) {
			b.WriteRune('_')
		}
		b.WriteRune(v + 'a' - 'A')
	}
	return b.String()

							w.Header().Set(k, v)
						}

						if opts.PartNumber > 0 && strings.Contains(ci.ETag, "-") {
							w.Header()[xhttp.AmzMpPartsCount] = []string{
								strings.TrimLeftFunc(ci.ETag, func(r rune) bool {
									return !unicode.IsNumber(r)
								}),
							}
						}

						// For providing ranged content
						start, rangeLen, err := rs.GetOffsetLength(ci.Size)
						if err != nil {

			if (len(args) == 1) != (configDumpFile == "") {
				cmd.Println(cmd.UsageString())
				return fmt.Errorf("cluster requires pod name or --file parameter")
			}
			return nil
		},
		RunE: func(c *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClient()
			if err != nil {
				return err
			}
			var configWriter *configdump.ConfigWriter
			if len(args) == 1 {

  istioctl profile diff default demo`,
		Args: func(cmd *cobra.Command, args []string) error {
			if len(args) != 2 {
				return fmt.Errorf("diff requires two profiles")
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			isdifferent, err := profileDiff(cmd, pfArgs, args)
			if err != nil {
				return err
			}
			if isdifferent {
				os.Exit(1)
			}
			return nil
		},
	}

				return fmt.Errorf("at least one of the --revision or --purge flags must be set")
			}
			if len(args) > 0 {
				return fmt.Errorf("istioctl operator remove does not take arguments")
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			client, err := ctx.CLIClient()
			if err != nil {
				return err
			}
			l := clog.NewConsoleLogger(cmd.OutOrStdout(), cmd.OutOrStderr(), installerScope)

		Args: func(cmd *cobra.Command, args []string) error {
			if len(args) > 1 {
				cmd.Println(cmd.UsageString())
				return fmt.Errorf("check requires only <pod-name>[.<pod-namespace>]")
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClient()
			if err != nil {
				return fmt.Errorf("failed to create k8s client: %w", err)
			}
			var configDump *configdump.Wrapper

		Args: func(cmd *cobra.Command, args []string) error {
			if len(args) < 1 {
				cmd.Println(cmd.UsageString())
				return fmt.Errorf("metrics requires workload name")
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			return run(cmd, ctx, args)
		},
		DisableFlagsInUseLine: true,
		ValidArgsFunction:     completion.ValidPodsNameArgs(ctx),
	}

			}
			if istiodReset && stackTraceLevel != "" {
				logCmd.Println(logCmd.UsageString())
				return fmt.Errorf("--stack-trace-level cannot be combined with --reset")
			}
			return nil
		},
		RunE: func(logCmd *cobra.Command, args []string) error {
			client, err := ctx.CLIClientWithRevision(opts.Revision)
			if err != nil {
				return fmt.Errorf("failed to create k8s client: %v", err)
			}

			// TODO(gri) change to "ideal-rune"
			s = "ideal-char"
		case types.UntypedFloat:
			s = "ideal-float"
		case types.UntypedComplex:
			s = "ideal-complex"
		case types.UntypedString:
			s = "ideal-string"
		case types.UntypedNil:
			panic("should never see untyped nil type")
		default:
			switch s {
			case "byte":
				s = "uint8"
			case "rune":
				s = "int32"
			}
		}