Howto properly remove a host key from the ~/.ssh/known_hosts file

Posted by Taoufix on Dec 14th, 2007 in Computers

Whenever I want to do that, it’s always the same scenario:

open the ~/.ssh/known_hosts file w/ an editor
go to the line containing the host key
remove it
save

I just found the proper way to do it:
[shell]$ ssh-keygen -R remotehost
/home/kakashi/.ssh/known_hosts updated.
Original contents retained as /home/kakashi/.ssh/known_hosts.old[/shell]

4 Responses for "Howto properly remove a host key from the ~/.ssh/known_hosts file"

Dec 14th

Fahdos

:( i wanna understand! why i’m the only one who can’t use linux :(
Dec 14th

taoufix

If ur current OS satisfies all ur needs, then u don’t need it.
Dec 14th

Fahdos

oui t’as raison.
Dec 14th

taoufix

But then u cant do this.