How to remove old entries from known_hosts?

[Darren Tucker]

On Wed, 14 Feb 2024 at 22:52, Chris Green <cl at isbd.net> wrote:
> Is there any way to remove old entries from the known_hosts file? With
> the hashed 'names' one can't easily see which entries are which.

ssh-keygen -R.  From the man page:

     -R hostname | [hostname]:port
             Removes all keys belonging to the specified hostname (with op-
             tional port number) from a known_hosts file.  This option is use-
             ful to delete hashed hosts (see the -H option above).

-- 
Darren Tucker (dtucker at dtucker.net)
GPG key 11EAA6FA / A86E 3E07 5B19 5880 E860  37F4 9357 ECEF 11EA A6FA
    Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.