Exit from unresponsive shell

See [this](https://superuser.com/questions/467398/how-do-i-exit-an-ssh-connection#:~:text=in%20the%20case%20where%20you,you%20to%20your%20command%20prompt.) for more info

languages/bash.sh

@@ -130,6 +130,8 @@ ssh user@host            # connects to host as user
 ssh -p <port> user@host  # connects to host on specified port as user
 ssh-copy-id user@host    # adds your ssh key to host for user to enable a keyed or passwordless login
 
+<Enter> + ~ + .          # Exit an unresponsive SSH shell connection
+
 whoami                   # returns your username
 passwd                   # lets you change your password
 quota -v                 # shows what your disk quota is