The ssh Command

Connect securely to a remote machine over the network to run commands.

Basic Usage

ssh hostname          # Logs in using your current username on the remote host
ssh username@hostname # Logs in with a specific username

Connection Steps

1. First connection may prompt to verify the host key:

   The authenticity of host 'test (127.0.0.1)' can't be established.
   RSA key fingerprint is ...
   Are you sure you want to continue (yes/no)? yes
   

2. Enter the password for the remote user.

3. After login, you can run commands remotely:

   bob@test:~$ date
   Fri Oct 4 16:14:43 CDT 2013
   

   4. Exit Remote Session : exit * Returns you to the local machine. * Be careful: running exit in nested SSH sessions may close your terminal window.

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ssh is essential for remote system administration and secure connections.