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The Linux "screen" Terminal Window Manager

Command Summary

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Command Summary

Interaction with Screen is mostly through keyboard shortcuts, but there are various usefull commands for which there is no keyboard shortcut. So the software provides a special keyboard shortcut that presents an input field where you can type in any Screen command.

The keyboard shortcut Ctrl-a : (Ctrl-a followed pressing the colon key) allows you to enter commands explicitly (by their names). All keyboard shortcuts start with Ctrl-a (unless the default command character has been changed). Ctrl-a means: while you hold down the control key (Ctrl) you press the a key.

acladd usernames: Allow other users in this session.
aclchg usernames permbits list: Change a user's permissions.
acldel username: Disallow other user in this session.
aclgrp usrname [groupname]: Inherit permissions granted to a group leader.
aclumask [users]+\-bits ...: Predefine access to new windows.
activity message: Set the activity notification message.
addacl usernames: Synonym to acladd.
allpartial state: Set all windows to partial refresh.
at [ident][#|*|%] command [args]: Execute a command at other displays or windows.
autodetach state: Automatically detach the session on SIGHUP.
autonuke state: Enable a clear screen to discard unwritten output.
bell _msg [message]: Set the bell notification message.
bind key [command [args]]: Bind a command to a key.
bindkey [opts] [string [cmd args]]: Bind a string to a series of keystrokes.
break [duration]: Send a break signal to the current window.
breaktype [tcsendbreak | TCSBRK | TIOCSBRK]: Specify how to generate breaks.
bufferfile [exchange-file]: Select a file for screen-exchange.
c1 [state]: Change c1 code processing.
caption mode [string]: Change caption mode and string.
chacl usernames permbits list: Synonym to aclchg.
charset set: Change character set slot designation.
chdir [directory]: Change the current directory for future windows.
clear : Clear the window screen.
colon : Enter a screen command.
command : Simulate the screen escape key.
compacthist [state]: Selects compaction of trailing empty lines.
console [state]: Grab or ungrab console output.
copy : Enter copy mode.
copy _reg [key]: Removed. Use paste instead.
crlf state: Select line break behavior for copying.
debug state: Suppress/allow debugging output.
defautonuke state: Select default autonuke behavior.
defbreaktype [tcsendbreak | TCSBRK | TIOCSBRK]: Specify the default for generating breaks.
defc1 state: Select default c1 processing behavior.
defcharset [set]: Change defaul character set slot designation.
defescape xy: Set the default command and meta characters.
defflow fstate: Select default flow control behavior.
defgr state: Select default GR processing behavior.
defhstatus [status]: Select default window hardstatus line.
defkanji wtype: Select default GR processing behavior.
deflogin state: Select default utmp logging behavior.
defmode mode: Select default file mode for ptys.
defmonitor state: Select default activity monitoring behavior.
defobuflimit limit: Select default output buffer limit.
defscrollback num: Set default lines of scrollback.
defshell command: Set the default program for new windows.
defsilence state: Select default idle monitoring behavior.
defslowpaste msec: Select the default inter-character timeout when pasting.
defwrap state: Set default line-wrapping behavior.
defwritelock on|off|auto: Set default writelock behavior.
defzombie [keys]: Keep dead windows.
detach : Disconnect screen from the terminal.
digraph : Enter digraph sequence.
displays : List currently active user interfaces.
dumptermcap : Write the window's termcap entry to a file.
echo [-n] message: Display a message on startup.
escape xy: Set the command and meta characters.
exec [[fdpat] command [args ...]]: Run a subprocess (filter).
fit : Change window size to current display size.
flow [fstate]: Set flow control behavior.
focus : Move focus to next region.
gr [state]: Change GR charset processing.
hardcopy : Write out the contents of the current window.
hardcopy _append state: Append to hardcopy files.
hardcopydir directory: Place, where to dump hardcopy files.
hardstatus [state]: Use the hardware status line.
height [lines]: Set display height.
help : Display current key bindings.
history : Find previous command beginning ....
hstatus status: Change the window's hardstatus line.
info : Display terminal settings.
ins _reg [key]: Removed, use paste instead.
kanji wtype [dtype]: Set the kanji type of a window.
kill : Destroy the current window.
lastmsg : Redisplay the last message.
license : Display licensing information.
lockscreen : Lock the controlling terminal.
log [state]: Log all output in the current window.
logfile filename: Place where to collect logfiles.
login [state]: Log the window in `/etc/utmp'.
logtstamp [state]: Configure logfile time-stamps.
mapdefault : Use only the default mapping table for the next keystroke.
mapnotnext : Don't try to do keymapping on the next keystroke.
maptimeout timo: Set the inter-character timeout used for keymapping.
markkeys string: Rebind keys in copy mode.
meta : Insert the command character.
monitor [state]: Monitor activity in window.
msgminwait sec: Set minimum message wait.
msgwait sec: Set default message wait.
multiuser state: Go into single or multi user mode.
nethack state: Use nethack-like error messages.
next : Switch to the next window.
nonblock state: Disable flow control to the current display.
number [n]: Change/display the current window's number.
obuflimit [limit]: Select output buffer limit.
only : Kill all other regions.
other : Switch to the window you were in last.
partial state: Set window to partial refresh.
password [crypted_pw]: Set reattach password.
paste [src_regs [dest_reg]]: Paste contents of paste buffer or registers somewhere.
pastefont [state]: Include font information in the paste buffer.
pow _break: Close and Reopen the window's terminal.
pow _detach: Detach and hang up.
pow _detach_msg [message]: Set message displayed on pow_detach.
prev : Switch to the previous window.
printcmd [cmd]: Set a command for VT100 printer port emulation.
process [key]: Treat a register as input to screen.
quit : Kill all windows and exit.
readbuf : Read the paste buffer from the screen-exchange file.
readreg [reg [file]]: Load a register from paste buffer or file.
redisplay : Redisplay the current window.
register key string: Store a string to a register.
remove : Kill current region.
removebuf : Delete the screen-exchange file.
reset : Reset the terminal settings for the window.
screen [opts] [n] [cmd [args]]: Create a new window.
scrollback num: Set size of scrollback buffer.
select [n]: Switch to a specified window.
sessionname [name]: Name this session.
setenv [var [string]]: Set an environment variable for new windows.
shell command: Set the default program for new windows.
shelltitle title: Set the default name for new windows.
silence [state|seconds]: Monitor a window for inactivity.
silencewait seconds: Default timeout to trigger an inactivity notify.
sleep num: Pause during startup.
slowpaste msec: Slow down pasting in windows.
sorendition [attr [color]]: Change text highlighting.
split : Split region into two parts.
startup _message state: Display copyright notice on startup.
stuff string: Stuff a string in the input buffer of a window.
su [username [password [password2]]]: Identify a user.
suspend : Put session in background.
term term: Set $TERM for new windows.
termcap term terminal-tweaks [window-tweaks]: Tweak termcap entries for best performance.
terminfo term terminal-tweaks [window-tweaks]: Ditto, for terminfo systems.
termcapinfo term terminal-tweaks [window-tweaks]: Ditto, for both systems.
time : Display time and load average.
title [windowtitle]: Set the name of the current window.
umask [users]+\-bits ...: Synonym to aclumask.
unsetenv var: Unset environment variable for new windows.
vbell [state]: Use visual bell.
vbell _msg [message]: Set vbell message.
vbellwait sec: Set delay for vbell message.
version : Display screen version.
wall message: Write a message to all displays.
width [num]: Set the width of the window.
windows : List active windows.
wrap [state]: Control line-wrap behavior.
writebuf : Write paste buffer to screen-exchange file.
writelock on|off|auto: Grant exclusive write permission.
xoff : Send an XOFF character.
xon : Send an XON character.
zombie [keys]: Keep dead windows.

Many of these commands can be executed using keyboard shortcuts.

Various commands can also be evoked through command line options.

If you are working from a machine running Microsoft Windows, you can use the utility PuTTY with an ssh connection to a remote Linux server, and then run screen from there.

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