This article covers how to find the key ID in GnuPG, and is part of a series in communications security.
GnuPG Provides a unique identifier for each key, which you can see when you list keys.
In order to list your keys, run the command
At the top of the output generated by this command there should be a sequence of characters and numbers, which starts out with 5 characters, then a forward slash, then another 8 characters.
The 8 characters at the end are the key id.
This can be used to refer to the key whenever you have a command that operates on your key.