How to Know keys expiration date for Already created keys using gpg in command prompt

[Heinz Diehl]

On 17.04.2015, Venkatramana Parapatla wrote: 

> How to Know keys expiration date for Already created keys using gpg in
> command prompt?

"gpg --list-keys" will give you an oversight over all keys in your public key
ring including their expiry date.

> How to renwal existing keys?

You can (of course) only change the expiry dato of your own key.
"gpg --edit-key <your-key>" and the "expire" command will let you perform the
desired changes.