Opening a SSH session to a remote machine

The SSH command line to open a session to a remote machine is called ssh.
The syntax is:

ssh remote_machine_ip/hostname
In this case, you will open a SSH session using your currently logged in user as a user for the remote machine,

the SSH command will interpret the command to:

ssh your_current_logged_in_user@hostname

[root@geek-kb ~]# whoami