Flag flag.FlagSet

	// CustomFlags indicates that the command will do its own
	// flag parsing.
	CustomFlags bool

	// Commands lists the available commands and help topics.
	// The order here is the order in which they are printed by 'go help'.
	// Note that subcommands are in general best avoided.
	Commands []*Command
}

var Go = &Command{
	UsageLine: "go",

		base.Exit()
	}

	if len(cmd.Commands) > 0 {
		PrintUsage(os.Stdout, cmd)
	} else {
		tmpl(os.Stdout, helpTemplate, cmd)
	}
	// not exit 2: succeeded at 'go help cmd'.
	return
}

var usageTemplate = `{{.Long | trim}}

Usage:

	{{.UsageLine}} <command> [arguments]

The commands are:
{{range .Commands}}{{if or (.Runnable) .Commands}}
	{{.Name | printf "%-11s"}} {{.Short}}{{end}}{{end}}

	Short:     "run specified go tool",
	Long: `
Tool runs the go tool command identified by the arguments.
With no arguments it prints the list of known tools.

The -n flag causes tool to print the command that would be
executed but not execute it.

For more about each tool command, see 'go doc cmd/<command>'.
`,
}

var toolN bool

// Return whether tool can be expected in the gccgo tool directory.

        if (StringUtil.isBlank(command)) {
            throw new CrawlerSystemException("command is empty.");
        }

        final Map<String, String> params = new HashMap<>();
        params.put("$INPUT_FILE", inputFile.getAbsolutePath());
        params.put("$OUTPUT_FILE", outputFile.getAbsolutePath());

        final List<String> cmdList = parseCommand(command, params);
        if (logger.isInfoEnabled()) {

}

// setShorthand installs a new shorthand as defined by a -command directive.
func (g *Generator) setShorthand(words []string) {
	// Create command shorthand.
	if len(words) == 1 {
		g.errorf("no command specified for -command")
	}
	command := words[1]
	if g.commands[command] != nil {
		g.errorf("command %q multiply defined", command)
	}
	g.commands[command] = slices.Clip(words[2:])
}

		})
}

// Wait waits for the completion of background commands.
//
// When Wait returns, the stdout and stderr buffers contain the concatenation of
// the background commands' respective outputs in the order in which those
// commands were started.
func Wait() Cmd {
	return Command(
		CmdUsage{
			Summary: "wait for completion of background commands",
			Args:    "",
			Detail: []string{

		// with "." in the command.
		dot := " ."
		if dir[len(dir)-1] == filepath.Separator {
			dot += string(filepath.Separator)
		}
		cmd = strings.ReplaceAll(" "+cmd, " "+dir, dot)[1:]
	}

	sh.printLocked(cmd + "\n")
}

// reportCmd reports the output and exit status of a command. The cmdOut and
// cmdErr arguments are the output and exit error of the command, respectively.
//

## Tools {#tools}

### Go command {#go-command}

Setting the `GOROOT_FINAL` environment variable no longer has an effect
([#62047](/issue/62047)).
Distributions that install the `go` command to a location other than
`$GOROOT/bin/go` should install a symlink instead of relocating
or copying the `go` binary.

<!-- go.dev/issue/34208, CL 563137, CL 586095 -->
The new `go` `env` `-changed` flag causes the command to print only

			// If we are racing with another go command and do bin/go first,
			// then the check of bin/go above might succeed, the other go command
			// would skip its own mode-setting, and then the go command might
			// try to run a tool before we get to setting the bits on pkg/tool.
			// Setting pkg/tool before bin/go avoids that ordering problem.
			// The only other tool the go command invokes is gofmt,

// the build command and only -coverprofile to the test command. If
// the CoverageRedesign experiment is disabled, -cover* flags are
// added only to the test command.
func AddCoverFlags(cmd *base.Command, coverProfileFlag *string) {
	addCover := false
	if cfg.Experiment != nil && cfg.Experiment.CoverageRedesign {
		// New coverage enabled: both build and test commands get
		// coverage flags.
		addCover = true