> gpg --list-keys
<keyring-location>
-------------------------------
pub   rsa4096 2017-05-19 [SC] [expires: 2019-05-19]
      <key-id>
uid           [ultimate] <my-name> <my-email>
sub   rsa4096 2017-05-19 [E] [expires: 2019-05-19]
sub   rsa4096 2017-05-19 [S] [expires: 2019-05-19]
sub   rsa4096 2017-05-19 [A] [expires: 2019-05-19]

> gpg  --armor --export <key-id>
-----BEGIN PGP PUBLIC KEY BLOCK-----
...
-----END PGP PUBLIC KEY BLOCK-----