I was using a computer somewhere to login my site as admin, but forgot to logout. How can I logout my account from another computer?
I wrote up a small drush command to do this:
$ drush help session-delete Delete user sessions from the database. Examples: drush session-delete all Delete all sessions. drush session-delete 64 Delete sessions for user id 64. Aliases: sess-del
Technically, this just deletes the session and doesn't do a proper logout. Those are nearly identical, though, under most circumstances.
This patch hasn't been committed, so you would need to download drush extras and apply it, or just extract the file from the patch and add it to your local commands.