====== Introduction ======

A screen manager with VT100/ANSI terminal emulation.

Screen is a full-screen window manager that multiplexes a physical terminal between several processes (typically interactive shells). Each virtual terminal provides the functions of a DEC VT100 terminal and, in addition, several control functions from  the  ISO  6429 (ECMA  48,  ANSI X3.64) and ISO 2022 standards (e.g. insert/delete line and support for multiple character sets).  There is a scrollback history buffer for each virtual terminal and a copy-and-paste mechanism that allows moving text regions between windows.

====== Links ======

===== General =====

[[https://www.gnu.org/software/screen/]]\\

====== Docs ======

[[https://www.gnu.org/software/screen/manual/]]\\

====== Files and Directories ======

===== General Files and Directories =====

FIXME

===== Configuration Files =====

^ File                  ^ Description                                                       ^
| ''$SYSSCREENRC''      | System-wide screen configuration for all users on the system.     |
| ''/etc/screenrc''     | System-wide screen configuration for all users on the system.     |
| ''$SCREENRC''         | User-specific screen configuration.                               |
| ''$HOME/.screenrc''   | User-specific screen configuration.                               |

Each configuration location from top to bottom can override configuration options set in the previous one.

====== Getting Help ======

Manual pages: 

<cli>
user@host:~$ man screen
</cli>

====== Install ======

To install //screen// on Debian: 

<cli>
root@host:~$ apt-get update
root@host:~$ apt-get -y install screen
</cli> 

====== Configuration ======

General configuration:

<code bash>
autodetach on           # Detach upon hangup, keep programs in screen(s)
                        # running: Default: on
bell_msg 'Update in window %n' # Message shown for a bell in a non-active window

# Always show a caption. Default: splitonly
# Format:
#  - The background color is black.
#  - On the left side, show the hostname enclosed in "[" and "]" in a
#    green color.
#  - On the right side, show the date in a blue color and the time in
#    a white color together enclosed in "[" and "]".
#  - In the middle show the window list. The active window name in a
#    white color and enclosed in red "(" and ")". The inactive window
#    names in a gray color.
caption always '%{= kG}[%{G}%H%{g}][%=%{= kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%=%{g}][%{B}%Y/%m/%d %{W}%c:%s%{g}]'

defmonitor off          # Do not display activity notification messages
                        # for windows which are in the background.
defscrollback 50000     # Keep scrollback buffer of n lines. Default: 100
defutf8 on              # Set the default character encoding to UFT8
hardcopydir $HOME       # Write hardcopys to the users $HOME. Default:
                        # current working directory
msgwait 5               # Duration a message is displayed. Default: 5
shelltitle 'bash'       # Name of the title for newly created windows
startup_message off     # Do not show the screens startup message
vbell off               # Disable the visual bell
</code>

Key bindings:
  * Reload the screen configuration file of the current user with <kbd>C - 'A'</kbd> <kbd>Shift - R</kbd>:
<code bash>
bind R eval "source $HOME/.screenrc" "echo '.screenrc reloaded!'"
</code> <

====== Usage ======

To start a new //screen// session:

<cli>
user@host:~$ screen
</cli>

Detach a //screen// session already running:

<cli>
user@host:~$ screen -d [pid.tty.host]
</cli>

Reattach to a already running //screen// session:

<cli>
user@host:~$ screen -d -r [pid.tty.host]
</cli>

===== Status Check =====

To check the status of all currently running //screen// sessions: 

<cli>
user@host:~$ screen -list
user@host:~$ screen -ls
There is a screen on:
    6156.pts-0.hostname     (08/04/2017 06:43:08 AM)    (Detached)
1 Socket in /var/run/screen/S-root.
</cli>

====== Recipies ======

<nspages .:recipies -subns -pagesInNs -simpleList -title -hideNoSubns -hideNoPages -textNS="" -exclude:start>

====== Known Issues ======

FIXME