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34 lines
699 B
Go
34 lines
699 B
Go
package client
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import (
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"fmt"
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flag "github.com/docker/docker/pkg/mflag"
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)
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// CmdHelp displays information on a Docker command.
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//
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// If more than one command is specified, information is only shown for the first command.
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//
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// Usage: docker help COMMAND or docker COMMAND --help
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func (cli *DockerCli) CmdHelp(args ...string) error {
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if len(args) > 1 {
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method, exists := cli.getMethod(args[:2]...)
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if exists {
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method("--help")
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return nil
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}
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}
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if len(args) > 0 {
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method, exists := cli.getMethod(args[0])
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if !exists {
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return fmt.Errorf("docker: '%s' is not a docker command. See 'docker --help'.", args[0])
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}
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method("--help")
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return nil
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}
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flag.Usage()
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return nil
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}
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