--- title: 'Registering a Secret Key by ssh-add' taxonomy: category: - docs --- [toc] ## Registration of Private Key By executing the following command in the terminal, the private key will be registered on the Mac. Example: Private key exists in /home/user/Desktop/id_rsa ```nohighlight $ ssh-add /home/user/Desktop/id_rsa ``` By using ssh-add (transfer agent), you can omit the passphrase of the private key when you log in to the login node. To delete the registered private key, execute the following command. ```nohighlight $ ssh-add -D ```