# gpg > GNU Privacy Guard. > More information: . - Sign doc.txt without encryption (writes output to doc.txt.asc): `gpg --clearsign {{doc.txt}}` - Encrypt doc.txt for alice@example.com (output to doc.txt.gpg): `gpg --encrypt --recipient {{alice@example.com}} {{doc.txt}}` - Encrypt doc.txt with only a passphrase (output to doc.txt.gpg): `gpg --symmetric {{doc.txt}}` - Decrypt doc.txt.gpg (output to `stdout`): `gpg --decrypt {{doc.txt.gpg}}` - Import a public key: `gpg --import {{public.gpg}}` - Export public key for alice@example.com (output to `stdout`): `gpg --export --armor {{alice@example.com}}` - Export private key for alice@example.com (output to `stdout`): `gpg --export-secret-keys --armor {{alice@example.com}}`