$ spack gpg --help
usage: spack gpg [-h] SUBCOMMAND ...

handle GPG actions for spack

positional arguments:
  SUBCOMMAND  GPG sub-commands

optional arguments:
  -h, --help  show this help message and exit

$ spack gpg --help
usage: spack gpg [-h] SUBCOMMAND ...

handle GPG actions for spack

positional arguments:
  SUBCOMMAND  GPG sub-commands
    verify    verify a signed package
    trust     add a key to the keyring
    untrust   remove a key from the keyring
    sign      sign a package
    create    create a new key
    list      list keys available in the keyring
    init      add the default keys to the keyring
    export    export a secret key

optional arguments:
  -h, --help  show this help message and exit