# Tmux

**tmux** is a terminal multiplexer. 
It lets you switch easily between several programs in one terminal, detach them (they keep running in the background), and reattach them to a different terminal.

**[Cheat Sheet](https://tmuxcheatsheet.com/)**

> **Useful tmux Commands**
>
>    - New Tmux Window **`tmux new -s mysession`**
>    - Detach it **`CTRL+b d`**
>    - List Sessions **`tmux ls`**
>    - Reattach Session **`tmux a -t mysession`**



**How to use tmux on Tufts HPC Cluster?**

### Load tmux module

`[your_utln@login-prod-01 ~]$ module load tmux`
Make a note of the login nodename `login-prod-01` where your tmux session lives.

### Start your tmux session

`[your_utln@login-prod-01 ~]$ tmux new -s mysession`

### Start your Interactive session inside the tmux session, and run your programs 

(Next Session)

### Detach your tmux session OR lose connection...

`CTRL+b d`

### Get your work session back

Log back in to the cluster or start a new terminal

If you are allocated on a **different** login node than where your tmux session lives. Simply do: 

`[your_utln@login-prod-03 ~]$ ssh login-prod-01`

`[your_utln@login-prod-01 ~]$ module load tmux`

### Check tmux sessions

`[your_utln@login-prod-01 ~]$ tmux ls`

### Pick your session and reattach it

`[your_utln@login-prod-01 ~]$ tmux a -t mysession`