Remove Old SSH Keys

### 1. **Remove from `~/.ssh/known_hosts`**
If you want to remove a specific host's SSH key (e.g., due to a changed server fingerprint):

ssh-keygen -R <hostname_or_IP>

For example, to remove a key for `example.com`:

ssh-keygen -R example.com

### 2. **Manually Edit `known_hosts` (If Needed)**
If the above command does not work, you can manually edit the file:

nano ~/.ssh/known_hosts

– Find the line that contains the old key for the host/IP and delete it.
– Save the file (`CTRL + X`, then `Y`, then `ENTER`).

### 3. **Remove SSH Private and Public Keys**
If you want to remove old SSH keys from your system completely:

rm -f ~/.ssh/id_rsa ~/.ssh/id_rsa.pub

If you're using different key types (`id_ed25519`, `id_ecdsa`, etc.), remove them accordingly:

rm -f ~/.ssh/id_* ~/.ssh/authorized_keys

### 4. **Restart SSH Agent (If Using One)**
If you are using an SSH agent, clear the loaded keys:

ssh-add -D

Let me know if you need more help! 🚀