Hi, this post will describe about how to generate an SSH key pair with a specific username, we can use the ssh-keygen command with the -C option. The -C option allows you to specify a comment for the public key, which is usually the username or email address of the key owner. For example, to generate an SSH key pair for the user alice, you can run:
ssh-keygen -t rsa -b 4096 -C johndoe- -t : Type
-C: Comment. Next this use for user login.
This will create a 4096-bit RSA key pair and store them in the ~/.ssh directory. The public key will be saved as ~/.ssh/id_rsa.pub and the private key as ~/.ssh/id_rsa. The public key will have a comment of johndoe at the end of the file. You can then copy the public key to the remote server that you want to access using SSH.
