help - Get help about commands and topics
gsutil help [command or topic]
will provide a summary of all commands and additional topics on which help is available.
gsutil help command or topic
will provide help about the specified command or topic.
gsutil help command sub-command
will provide help about the specified sub-command. For example, running:
gsutil help acl set
will provide help about the "set" subcommand of the "acl" command.
If you set the PAGER environment variable to the path to a pager program (such as /bin/less on Linux), long help sections will be piped through the specified pager.