Screen

Foi instalado screen (v. 3.2). Esse programa permite que se criem várias janelas em um terminal comum, cada uma com seu programa. Especialmente útil para quem entra no sistema com o kermit a partir de casa. Essas janelas podem ser "destacadas" de um terminal e passadas para outro, ou guardadas de uma sessão para outra.

Abaixo vai uma cópia do arquivo README do programa; a página de manual é bem completa e inteligível. Alguns comentários:

a) Um arquivo de inicialização sugerido pelo autor do screen e
   ligeiramente modificado por mim está em
   /usr/local/etc/sample.iscreenrc .  Quem for usar o screen e
   quiser adaptá-lo a seu gosto pode instalar uma cópia como
   ~/.iscreenrc .

b) Entre as modificações que sugiro fortemente está mudar o
   escape de C-A para C-O; as pessoas que usam emacs, ksh ou bash
   perceberão porque.

-----------------------------------------------------------------------
Short introduction to screen (Version 3.0.7)                  jw 7.9.91

screen 
provides you with an ansi/vt100 terminal emulator, which can multiplex
up to 10 pseudo-terminals. On startup, it executes $SHELL in window 0.
Then it reads $HOME/.iscreenrc to learn configuration, keybindings, 
and may open more windows.

C-A C		Create new windows.

C-A SPACE	Advance from window to window (with wraparound)

C-A C-A	Toggle between two windows.

C-A 0
   ...
C-A 9		Switch to window nr. 0 ... 9.

C-A w		Show a list of windows in the Statusline.

C-A a		(Think of goto-start-of-line in emacs or tcsh).
C-A s		(Think of i-search in emacs).
C-A q		Send a literal C-A/C-S/C-Q to the process in the window.

C-A l		Redraw this window.

C-A W		Toggle between 80 & 132 columns mode. 

C-A L		Try to toggle the utmp-slot for this window.

C-A A		Prompt for a new name for this window. (see C-A w).

C-A z		Suspend the whole screen.

C-A x		Execute /usr/bin/lock or $LOCKCMD or a builtin terminallock.

  C-A C-[	Start copy&paste mode. Move cursor with h,j,k,l. Set 2 marks
		with SPACE or y. Abort with ESC. Note that "C-[" is ESC.
		NOTE: there is a userdefined amount of scrollback history.
                The history buffer is entered, when the cursor hits the top
		of the window.

  C-A C-]	paste in current window's stdin. see C-A C-[.

  C-A <
  C-A >		Read or write the copybuffer from/to the exchange file.
		Multiple screen users on the same host may thus transfer text.

  C-A d		Detach screen. All processes continue and may spool output
		to their pty's, but screen disconnects from your terminal.
		reattach with "screen -r".

  C-A D D	Power detach. Disconnect like C-A d and kill the parent shell.

  C-A K		Kill a window and send SIGHUP to its processgroup. Per default
		this would be C-A C-k. But it is redefined in the demo .screenrc
		(think of killing a whole line in emacs).

  C-A :set all  Show all keybindings. The above list is not at all complete and
		may even be wrong, as keys can be redefined in .screenrc or
		with "C-A :bind 'X' keyname [arguments]".

  C-A : ....  Online configuration change.


screen -r [host.tty]
  Reattach a detached screen session. The terminal emulator reconfigures
  according to your $TERMCAP or $TERM settings. '-R' brings up a detached
  session or (if none) creates a new session. You should specify a socket
  when there you have multiple screens detached. 

screen -d [host.tty]
  Detach a screen session from remote. Has the same effect as typing 'C-A d'
  on the controlling terminal. '-D' will power-detach.

screen -list
screen -ls
  Show all available sockets. If there are (DEAD???) sockets, you may consider 
  removing them. If there are sockets missing, you may send a SIGCHLD to its
  process 'SCREEN' and the process will re-establish the socket. (think of 
  someone cleaning /tmp thoroughly).

screen -h 200
  Starts a new screen session and sets the number of lines in the scrollback
  buffer to 200. The default is 50 lines.