Agafix Blog

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

December 14, 2007

Submitted by: Taoufix

Category: Computers

197 views

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

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

I just found the proper way to do it:

$ ssh-keygen -R remotehost
/home/kakashi/.ssh/known_hosts updated.
Original contents retained as /home/kakashi/.ssh/known_hosts.old