ssh Secrets Summary

1. Run Command on Remote System Without Logging In
   
   user@user-laptop:~$ ssh tony date
   Mon Aug 30 19:08:40 SPT 2010
   
   For Program needing pseudo-tty use -t option of ssh. For eg:
   user@user-laptop:~$ ssh tony -t top
   user@user-laptop:~$ ssh tony -t screen -dr
   
   
2. Tilde Tricks
   
   Tilde (~) is ssh's escape character.
   ~. terminate ssh connection. Specially useful when you loose connection and don't want to wait for ssh timeout.
   ~^z put the connection in background
   ~? list all key sequence
   
   
3. ssh-keygen -R removes bad hostname from your ssh know host
   
   
4. Shortcut Name For Connection
   
   In ~/.ssh/config enter the following information
   

   Host bob
        HostName bob.example.com
        Port 2222
        User username
   
   Host alice
        HostName alice.example.com
        Port 8183
        User username

   now to ssh
   user@user:~$ ssh bob
   user@user:~$ ssh alice

Summarized from http://blog.ksplice.com/2010/08/six-things-i-wish-mom-told-me-about-ssh/