# Tmux

El famoso terminal multiplexer _(sorry not sorry but screen is a piece of shit)_.

## Sync panels

Sync panels can be quite usefull to do the same tasks on a different set of servers.

### `tmux.conf` file

```conf
[...]
unbind S
bind S set-windows-option synchronize-panes
[...]
```

### How to use it

Typical use case can be updating let's say 3 Debian servers.

1. start tmux
1. split in 3, use ssh to connect to the targets[^1].
1. use `bind prefix + S` to activate sync[^2]
1. `apt update && apt upgrade`
1. And voilà !

[^1]: a dedicated session can be used to automate stuff, more on that later...

[^2]: by default, Ctrl + b