GPG
Commands
Display the public keys
gpg --list-keys
Display the secret keys
gpg --list-secret-keys
Import the key
gpg --import path-to-key
Troubleshooting
gpg failed to sign the data fatal: failed to write commit object
Display the public keys
gpg --list-keys
Display the secret keys
gpg --list-secret-keys
Import the key
gpg --import path-to-key
gpg failed to sign the data fatal: failed to write commit object