Ubuntu 22.04 Tmux - Revision history

AwesomO at 14:59, 10 April 2025

2025-04-10T14:59:49Z

← Older revision		Revision as of 14:59, 10 April 2025
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	= tmux — terminal multiplexer =		= tmux — terminal multiplexer =

			== Basics ==
	==Basics==
	Description Quote from man page		Description Quote from man page

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	Tmux can do a number of things.		Tmux can do a number of things.

	In this module we are just going to concentrate on solving the problem of something going wrong with ~~are ssh~~ connection.		In this module we are just going to concentrate on solving the problem of something going wrong with our SSH connection.

	If we lose ~~are ssh~~ terminal connection, processes we were running will be sent a SIGHUP signal.		If we lose our SSH terminal connection, processes we were running will be sent a SIGHUP signal.

	[[SIGHUP\|SIGHUP]]		[[SIGHUP\|SIGHUP]]

	~~Lets~~ go ~~stright~~ to a example of using '''tmux''' to solve this problem.		Let’s go straight to an example of using '''tmux''' to solve this problem.

	On ~~are~~ server ~~lets~~ run/start tmux.		On our server, let’s run/start tmux:

	<code>tmux</code>		<code>tmux</code>

	~~that's~~ it.		That’s it.

	Now ~~lets~~ run a program and see what happens when we disconnect.		Now let’s run a program and see what happens when we disconnect:

	<code>$EDITOR test-txt-file</code>		<code>$EDITOR test-txt-file</code>
Line 34:		Line 33:
	<pre>		<pre>
	Hello world		Hello world
	i am writing or doing something important.		I am writing or doing something important.
	i hope ~~i dont~~ disconnect and lose this		I hope I don’t disconnect and lose this
	</pre>		</pre>

	Now just close the ~~terminal, do~~ not save and/or exit the text editor, ~~Just~~ close the terminal.		Now just close the terminal—do not save and/or exit the text editor, just close the terminal.

	Open another terminal and reconnect to your server.		Open another terminal and reconnect to your server.

	Use the command '''''tmux ls''''' to list your tmux sessions.		Use the command '''tmux ls''' to list your tmux sessions:

	<code>tmux ls</code>		<code>tmux ls</code>
Line 52:		Line 51:
	</pre>		</pre>

	I am going to reconnect to my tmux session 0, with the command.		I am going to reconnect to my tmux session 0 with the command:

	<code>tmux attach -t 0</code>		<code>tmux attach -t 0</code>

	And ~~thats its~~.		And that’s it.

	Tmux also solves the problem of your ~~ssh~~ session closing due to ~~inactive~~		Tmux also solves the problem of your SSH session closing due to inactivity:

	<blockquote>		<blockquote>
Line 64:		Line 63:
	</blockquote>		</blockquote>

	Note: ~~you~~ can run the same tmux session in more than one terminal at the same time.		Note: You can run the same tmux session in more than one terminal at the same time. Open 3 terminals and log into the server. In each terminal:
	Open 3 ~~terminal~~ and log into server		<br \>
	in each terminal <br \>		<code>tmux attach -t 0</code>
	<code>tmux attach -t 0</code><br \>		<br \>
	~~all~~ will be updated in real time.		All will be updated in real time. If you exit tmux by typing <code>exit</code> in one terminal, the tmux session will end and exit on all 3 terminals. If you don’t want that, just close the terminal without typing <code>exit</code>.
	If you exit tmux by typing <code>exit</code> in one terminal the tmux session will end and exit on all 3 terminals.
	If you ~~dont~~ want that just close terminal without typing <code>exit</code>

	You do not need tmux installed on your local computer, just the computer(server) you are connecting to.		You do not need tmux installed on your local computer, just the computer (server) you are connecting to.

	tmux is installed by default on ~~ubuntu server 1804~~		tmux is installed by default on Ubuntu Server 18.04, but if you want to install it on your desktop or if it’s been removed from your server and you want to reinstall:
	but if you want to install it on your desktop
	or if ~~its~~ been removed from your server and want to reinstall
	<code>apt install tmux</code>		<code>apt install tmux</code>

	=== ~~Scrolling~~ on tmux ===		== Scrolling in tmux ==

			Press <code>Ctrl+b</code> followed by <code>[</code>. Now you can scroll up and down with arrow keys. Press <code>q</code> to quit scroll mode.

			== Managing tmux Sessions and Windows ==

			To close a tmux window and later come back to it, you can use the following steps:

			=== Detaching from a tmux Session (Without Terminating It) ===
			Detach from the current tmux session by pressing:

			<code>Ctrl-b d</code>

			This will leave the session running in the background, allowing you to close the terminal or work on other tasks.

			=== Reattaching to a tmux Session ===
			To reattach to a detached session, use:

			<code>tmux attach-session</code>

			This command will reconnect you to the most recently detached session.

			If you have multiple sessions, list them with:

			<code>tmux list-sessions</code>

			Then, reattach to a specific session by its name or number:

			<code>tmux attach-session -t <session_name></code>

			If another client is attached to the session, you can forcefully detach them and reattach using:

			<code>tmux attach-session -t <session_name> -d</code>

			=== Closing a tmux Window ===
			To close a specific window in tmux, press:

			<code>Ctrl-b &</code>

			Confirm with <code>y</code> to kill the window.

			Alternatively, you can type <code>exit</code> in the shell of the window to close it.

			If you prefer using commands, run:

			<code>tmux kill-window -t <window_number></code>

	~~press <code>CTRL+b</code> followed by <code>[</code> now~~ you can ~~scroll up and down with arrow keys~~.		By detaching instead of killing the session, you ensure that your work is preserved and can be resumed later.
	~~press <code>q</code> to quit scroll mode~~

Noob: Noob moved page Tmux to Ubuntu 22.04 Tmux

2023-05-11T18:50:28Z

Noob moved page Tmux to Ubuntu 22.04 Tmux

← Older revision	Revision as of 18:50, 11 May 2023
(No difference)

imported>AwesomO: /* tmux — terminal multiplexer */

2023-04-20T02:41:51Z

tmux — terminal multiplexer

← Older revision		Revision as of 02:41, 20 April 2023
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	If we lose are ssh terminal connection, processes we were running will be sent a SIGHUP signal.		If we lose are ssh terminal connection, processes we were running will be sent a SIGHUP signal.

	[~~https://en.wikipedia.org/wiki/~~SIGHUP ~~'''''External Link''''' Wikipedia link to~~ SIGHUP]		[[SIGHUP\|SIGHUP]]

	Lets go stright to a example of using tmux to solve this problem.		Lets go stright to a example of using '''tmux''' to solve this problem.

	On are server lets run/start tmux.		On are server lets run/start tmux.

Noob: Created page with "= tmux — terminal multiplexer = ==Basics== Description Quote from man page
tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached.
Tmux can do a number of things. In this module we are just going to concentrate on solving the problem of something going wrong with are ssh..."

2023-03-04T00:56:03Z

Created page with "= tmux — terminal multiplexer = ==Basics== Description Quote from man page <blockquote> tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached. </blockquote> Tmux can do a number of things. In this module we are just going to concentrate on solving the problem of something going wrong with are ssh..."

New page

= tmux — terminal multiplexer =

==Basics==
Description Quote from man page

<blockquote>
tmux is a terminal multiplexer: it enables a number of terminals to be
created, accessed, and controlled from a single screen. tmux may be
detached from a screen and continue running in the background, then
later reattached.
</blockquote>

Tmux can do a number of things.

In this module we are just going to concentrate on solving the problem of something going wrong with are ssh connection.

If we lose are ssh terminal connection, processes we were running will be sent a SIGHUP signal.

[https://en.wikipedia.org/wiki/SIGHUP '''''External Link''''' Wikipedia link to SIGHUP]

Lets go stright to a example of using tmux to solve this problem.

On are server lets run/start tmux.

<code>tmux</code>

that's it.

Now lets run a program and see what happens when we disconnect.

<code>$EDITOR test-txt-file</code>

<pre>
Hello world
i am writing or doing something important.
i hope i dont disconnect and lose this
</pre>

Now just close the terminal, do not save and/or exit the text editor, Just close the terminal.

Open another terminal and reconnect to your server.

Use the command '''''tmux ls''''' to list your tmux sessions.

<code>tmux ls</code>

My output:

<pre>
0: 1 windows (created Mon Jun 1 06:41:43 2020) [140x14]
</pre>

I am going to reconnect to my tmux session 0, with the command.

<code>tmux attach -t 0</code>

And thats its.

Tmux also solves the problem of your ssh session closing due to inactive

<blockquote>
packet_write_wait: Connection to 192.248.157.27 port 22: Broken pipe
</blockquote>

Note: you can run the same tmux session in more than one terminal at the same time.
Open 3 terminal and log into server
in each terminal <br \>
<code>tmux attach -t 0</code><br \>
all will be updated in real time.
If you exit tmux by typing <code>exit</code> in one terminal the tmux session will end and exit on all 3 terminals.
If you dont want that just close terminal without typing <code>exit</code>

You do not need tmux installed on your local computer, just the computer(server) you are connecting to.

tmux is installed by default on ubuntu server 1804
but if you want to install it on your desktop
or if its been removed from your server and want to reinstall
<code>apt install tmux</code>

=== Scrolling on tmux ===

press <code>CTRL+b</code> followed by <code>[</code> now you can scroll up and down with arrow keys.
press <code>q</code> to quit scroll mode