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# Clear History in Tmux

Tmux is one of the most useful tool when it comes to using using a linux terminal.

Tmux is a terminal multiplexer, it allows a user to access multiple terminals (or windows), each running a separate program, while providing a single screen to work on. Tmux is useful for running more than one command-line program at the same time, increasing productivity and the way you work.

Tmux is one of the "terminal multiplexer", it enables a number of terminals (or windows) to be accessed and controlled from a single terminal. It allows you to create a session on a remote box, run applications in that remote session, "detach" from the session, and re-"attach" when desired. It also has advanced features such as multiple windows and split views. Using tmux is recommend when running an interactive CLI program remotely. If you get disconnected from your session, you can re-attach as though nothing happened.

Let's consider a case where you have to send a command to all the panes in a window to clear history in all your panes.

# Clear History of active pane in Tmux

You can clear history of your tmux pane by running the following commands inside the pane, Here, let's assume that your <prefix> is Ctrl-B, which is the default prefix.

Ctrl-B
:
clear-history


In case you are in the in the command line, you can run the following command in your shell-

tmux clear-history


You can also bind it to a keyboard shortcut, which makes clearing history easier, set this in your ~/.tmux.conf-

bind -n C-k clear-history


You have to reload changes in tmux config tmux.conf so that it reflects-

tmux source-file ~/.tmux.conf


So, now just do the following shortcut combination to clear history-

Ctrl-B
Ctrl-K


# Clear History of all panes in a Tmux Window

You can use <prefix> :setw synchronize-panes on to set the ability to send commands to all panes. All panes in the given window are all now synchronized to receive the same command.

Here, let's assume that your <prefix> is Ctrl-B, which is the default prefix.

Let's take an example, let's say you want to clear history across all panes in a window. You can do the follow set of commands-

Ctrl-B
:
setw synchronize-panes on
clear-history


To disable the synchronize-panes state, you can use the following command-

Ctrl-B
:
setw synchronize-panes off


I hope you found this article useful, glad that you found it easy to clear one or more panes in Tmux.