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Remove Key from known_hosts

August 31, 2019

If you’ve changed keys, you will need to delete a ssh key from /etc/known_hosts file.

You can edit it manually using an editor such as vi or vim.

vim ~/.ssh/known_hosts

vim ~/.ssh/known_hosts

Or you can use ssh-keygen command with -R option to delete the hostname or IP address.

ssh-keygen -f "~/.ssh/known_hosts" -R "xxx.xxx.xxx.xxx"

ssh-keygen -f "~/.ssh/known_hosts" -R "xxx.xxx.xxx.xxx"

Filed Under: Linux Tagged With: delete, known_hosts, ssh, ssh-keygen

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