Section 2-6: Disconnect from the Computer

[ Previous chapter ][ This chapter ][ Next chapter ] Note that turning off the screen power does NEITHER turn off the computer, NOR interrupt the network connection to the computer reliably. In order to stop working, you have to 'log out'. The procedure is simple:

% logout

or

% <CTRL><D>

Subsection 2.6.1

Emergency Break: Serial Line

If you are logged in via a serial line, you can try to send a 'BREAK' signal in order to get back to the server you started from. The BREAK command is generated by a variety of keystrokes, depending on your keyboard, terminal, or emulator . Common keystrokes are <ALT><L>, <CTRL><L>, or any combination of these with <OPTION> or <ALT GR>. <ALT><H> usually helps on DOS systems. After you have issued the BREAK command, you still have to 'log out':

Local> logout

Subsection 2.6.2

Emergency Break: 'rlogin'

If you are logged in via an 'rlogin' session, you can try to send an 'ESCAPE' signal in order to get back to the host you started from. The ESCAPE command is usually 'tilde period' (<~><.>). This should get you back to the prompt of the original computer. Scree trace of this action:

~.

session closed.

Subsection 2.6.3

Emergency Break: 'telnet'

If you are logged in via a 'telnet' session, you can try to send an 'ESCAPE' signal in order to get back to the host you started from. The ESCAPE command is occasionally displayed at the start of the session and is usually <CTRL><]>. This should get you back to the TELNET> prompt. There, issue the command 'quit': 

 

  
^]
  

  
TELNET>  quit

Subsection 2.6.4

Emergency Break: 'set host'

If you are logged in via a 'set host' (=DECnet) session, you can try to send <CTRL><Y> repeatedly in order to get back to the host you started from.

<CTRL><Y> <CTRL><Y> <CTRL><Y> 

 
Are you repeating ^Y to abort the session ... ?

Y

Subsection 2.6.5

Emergency Break: PC / Macintosh

If you are logged in via a personal computer or a windowing system, where the 'login' occurred in a window, you can try to close the window in order to close the connection. Rebooting the computer is obviously only a choice for personal computers (as opposed to multi-user systems). The use of X-Windows does occasionally exceed the limits of the memory or other resources. Frozen windows or keyboards will enforce the need to reboot.

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