Screen/tmux - Revision history

Paul-kapinos-e26d@rwth-aachen.de at 09:13, 12 June 2020

2020-06-12T09:13:08Z

Paul-kapinos-e26d@rwth-aachen.de: /* General */

2020-06-12T09:02:50Z

General

Daniel-schurhoff-de23@rwth-aachen.de at 13:51, 3 September 2019

2019-09-03T13:51:41Z

Paul-kapinos-e26d@rwth-aachen.de at 11:15, 11 April 2019

2019-04-11T11:15:45Z

Paul-kapinos-e26d@rwth-aachen.de at 11:15, 11 April 2019

2019-04-11T11:15:09Z

Stefan-erlbeck-05df@rwth-aachen.de at 10:47, 27 November 2018

2018-11-27T10:47:49Z

Daniel-schurhoff-de23@rwth-aachen.de at 11:50, 20 November 2018

2018-11-20T11:50:59Z

Daniel-schurhoff-de23@rwth-aachen.de at 11:50, 20 November 2018

2018-11-20T11:50:50Z

Daniel-schurhoff-de23@rwth-aachen.de at 11:49, 20 November 2018

2018-11-20T11:49:33Z

Stefan-erlbeck-05df@rwth-aachen.de: Created page with "The tools screen and tmux are window manager. Their main purpose is to allow the user to perform multiple tasks in a Shell or during an ssh session at the same tim..."

2018-11-20T11:11:43Z

Created page with "The tools screen and tmux are window manager. Their main purpose is to allow the user to perform multiple tasks in a Shell or during an ssh session at the same tim..."

New page

The tools screen and tmux are window manager. Their main purpose is to allow the user to perform multiple tasks in a [[Shell]] or during an [[Ssh|ssh]] session at the same time. This is comparable to multiple tabs in a browser.

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== General ==
Screen and tmux allow to perform multiple tasks at once. An important concept is detaching and attaching: detaching means that you put a screen / tmux session into the background. You can later attach to any session which was detached (e.g. if you need the output of a command). Closed sessions cannot be attached to.

A huge advantage is that these commands decouple task and terminal: you can log into an ssh session, start screen (or tmux), and then start a long-running task (e.g. download a file via wget). Afterwards, one can detach the screen session and then exit the ssh session. The download is now still running in the background (without screen it would terminate when exiting the ssh session).

== Using screen ==
If you want to start a new session, you will need to run:
$ screen
On the other hand, you can attach to existing sessions with:
$ screen -r [name]
where the name of the session is needed if more than one exist.

During a session, there are more commands. All of them require to type ''Ctrl + a''. The most important commands are listed here:

{| class="wikitable" style="width: 30%;"
||| '''Commands'''
|-
| ''c'' || create a new window in the current screen session
|-
| ''space'' || switch between the windows of the current screen session
|-
| ''d'' || detach the current screen session
|}

== Using tmux ==
TODO

← Older revision		Revision as of 09:13, 12 June 2020
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	$ tmux -S /tmp/$USER/tmux ls		$ tmux -S /tmp/$USER/tmux ls

		+	== GUI and X11 ==
		+	Despite the principally possibility to use screen with GUI applications, you do not want to do so. Instead use [[SSH\|FastX]] or [https://en.wikipedia.org/wiki/Virtual_Network_Computing VNC]

@@ Line 7: / Line 7: @@
 Screen and tmux allow to perform multiple tasks at once. An important concept is detaching and attaching: detaching means that you put a screen / tmux session into the background. You can later attach to any session which was detached (e.g. if you need the output of a command). Closed sessions cannot be attached to.
-A huge advantage is that these commands decouple task and terminal: you can log into an ssh session, start screen (or tmux), and then start a long-running task (e.g. download a file via wget). Afterwards, one can detach the screen session and then exit the ssh session. The download is now still running in the background (without screen it would terminate when exiting the ssh session). This is even more helpful if the ssh connection is unstable or might get interrupted: using screen or tmux, the connection loss does not interrupt the tasks which are currently running in the remote terminal.
+A huge advantage is that these commands decouple task and terminal: you can log into an ssh session, start screen (or tmux), and then start a long-running task (e.g. download a file via wget). Afterwards, one can detach the screen session and then exit the ssh session. The download is now still running in the background (without screen it would terminate when exiting the ssh session). This is even more helpful '''if the ssh connection is unstable or might get interrupted:''' using screen or tmux, the connection loss does not interrupt the tasks which are currently running in the remote terminal.
 == Using screen ==

← Older revision		Revision as of 13:51, 3 September 2019
Line 1:		Line 1:
		+	[[Category:Basics]]
	The tools screen and tmux are window managers. Their main purpose is to allow the user to perform multiple tasks in a [[Shell]] or during an [[Ssh\|ssh]] session at the same time. This is comparable to multiple tabs in a browser.		The tools screen and tmux are window managers. Their main purpose is to allow the user to perform multiple tasks in a [[Shell]] or during an [[Ssh\|ssh]] session at the same time. This is comparable to multiple tabs in a browser.

@@ Line 75: / Line 75: @@
 Note: tmux use $TMPDIR to save the communication socket. This directory may be temporarily and/or session-dependent in some environments; once removed you will lost your connection to (still running) tmux sessions. To solve that put your tmux session data to a path not beind cleaned away after logout, e.g.
-tmux -S /tmp/$USER/tmux new
+ $ tmux -S /tmp/$USER/tmux new
 and afte re-login
-tmux -S /tmp/$USER/tmux ls
+ $ tmux -S /tmp/$USER/tmux ls

@@ Line 73: / Line 73: @@
 | ''?'' || show all keybindings (commands)
 |}
 == Further Reading ==

@@ Line 4: / Line 4: @@
 == General ==
 Screen and tmux allow to perform multiple tasks at once. An important concept is detaching and attaching: detaching means that you put a screen / tmux session into the background. You can later attach to any session which was detached (e.g. if you need the output of a command). Closed sessions cannot be attached to.
-A huge advantage is that these commands decouple task and terminal: you can log into an ssh session, start screen (or tmux), and then start a long-running task (e.g. download a file via wget). Afterwards, one can detach the screen session and then exit the ssh session. The download is now still running in the background (without screen it would terminate when exiting the ssh session).
+A huge advantage is that these commands decouple task and terminal: you can log into an ssh session, start screen (or tmux), and then start a long-running task (e.g. download a file via wget). Afterwards, one can detach the screen session and then exit the ssh session. The download is now still running in the background (without screen it would terminate when exiting the ssh session). This is even more helpful if the ssh connection is unstable or might get interrupted: using screen or tmux, the connection loss does not interrupt the tasks which are currently running in the remote terminal.
 == Using screen ==
@@ Line 15: / Line 13: @@
 On the other hand, you can attach to existing sessions with:
   $ screen -r [name]
-where the name of the session is needed if more than one exist.
+where the name of the session is needed if more than one exist (running without a name will list the possible sessions).
-During a session, there are more commands. All of them require to type ''Ctrl + a''. The most important commands are listed here:
+During a session, you can create multiple windows. A window corresponds to a tab in a browser and is thus able to run a task independent and parallel. Furthermore, you can split the shell screen in multiple regions which you can see at the same time. In order to perform these commands, you first need to press '''Ctrl''' + '''a'''.
 {| class="wikitable" style="width: 30%;"
-||| '''Commands'''
+| || '''Command'''
 |-
 | ''c'' || create a new window in the current screen session
@@ Line 26: / Line 26: @@
 | ''space'' || switch between the windows of the current screen session
 |-
-| ''d'' || detach the current screen session
+| ''S'' || split the screen horizontally (note the capital letter!)
 |}
 == Using tmux ==
-TODO
+Similarly, you can start a new session with:

← Older revision		Revision as of 11:50, 20 November 2018
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	== General ==		== General ==
		+	ToDo Add: This is also important when your Ssh connection is not stable or might get interrupted!
		+
	Screen and tmux allow to perform multiple tasks at once. An important concept is detaching and attaching: detaching means that you put a screen / tmux session into the background. You can later attach to any session which was detached (e.g. if you need the output of a command). Closed sessions cannot be attached to.		Screen and tmux allow to perform multiple tasks at once. An important concept is detaching and attaching: detaching means that you put a screen / tmux session into the background. You can later attach to any session which was detached (e.g. if you need the output of a command). Closed sessions cannot be attached to.

← Older revision		Revision as of 11:49, 20 November 2018
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−	The tools screen and tmux are window ~~manager~~. Their main purpose is to allow the user to perform multiple tasks in a [[Shell]] or during an [[Ssh\|ssh]] session at the same time. This is comparable to multiple tabs in a browser.	+	The tools screen and tmux are window managers. Their main purpose is to allow the user to perform multiple tasks in a [[Shell]] or during an [[Ssh\|ssh]] session at the same time. This is comparable to multiple tabs in a browser.

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