Linux sugar (1)

Local

1. Open the terminal and type ssh-keygen to generate a key pair.

2. The key pair consists of the public key id_rsa.pub and the private key id_rsa.

Cloud

1. Create a .ssh directory if it doesn't exist.

2. Inside the .ssh directory, create a file named authorized_keys.

3. Change the permission of the authorized_keys file to 600 by typing chmod 600 authorized_keys in the terminal.

4. Open the authorized_keys file using vim, and copy the content of the local id_rsa.pub file into it.

5. Note that the authorized_keys file should not have write permission for users other than its owner.