Intro
Opening a screen session
Seperating a screen session
Return to a screen session
Closing a screen session
Seperating a window into several parts
Splitting the terminal
Switch to the new window
Open a new terminal
Managing the different windows
Select a particular window
Resizing a window
Renaming a window
Making use of screen





Intro

Screen is a full screen window manager, which divide a terminal between several processes. Using screen you can handle a task from on a PC, by detaching the terminal to which it is bound and resume it on another terminal or PC.

Screen read all typed commands through the shell from which it was launched. In order to interact directly with its window manager, it must automatically be launched using the sequence of keys "CTRL-a" followed by a key or another key sequence.

Opening a screen session

To open a screen session from a terminal (or Xterm) type the following command:


screen -r
Seperating a screen session
To detach a screen session and return to his connection shell, simply type:

CTRL-a d
Return to a screen session
To return to a screen session, type:


screen –r

Closing a screen session

To close a screen session, simply type:

CTRL-a \

Note that :"\" (backslash) is obtained using the following combination of keys "Alt Gr +8".

Seperating a window into several parts

The separation of your terminal into two parts is done in three phases. Note that you can repeat the procedure, split screen in more than two parts.
Splitting the terminal

CTRL-a MAJ-s
Switch to the new window

CTRL-a TAB
Open a new terminal

CTRL-a c

Managing the different windows

Select a particular window
If several active windows:


CTRL-a "
or

CTRL-a n
or


CTRL-a '
Resizing a window
To modify the size of a window, just:

To extend it:

CTRL-a :resize + n

To decrease the size:

CTRL-a :resize – n

Adjust all windows to the same size:

CTRL-a :resize =
Renaming a window
To rename a window, simply type:


CTRL-a MAJ-a

Enter the new name for the window, and then validate using the Enter key.

Making use of screen

Connecting via ssh on machine B
Launch screen

screen

Launching a command for an active task
Hold task (suspending it)


CTRL + Z
Set to background


bg% 1

Protection of the task using nohup

nohup top &

Seperating the screen


CTRL + a => d

Disconnect


exit

Launching screen on the machine B from a shell
Recovering the screen


screen-r

Verifying the task


jobs

Setting task as priority

fg %1