Create keep-scripts-running-ssh.md

linux/keep-scripts-running-ssh.md

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+# Keep processes running and closing SSH connection
+
+The are several alternatives. Here we cover `nohup` and `tmux`.
+
+## Using `nohup`
+
+```
+$ nohup long-running-command &
+```
+It logs `stdout` to `nohup.log`.
+
+
+## Using `tmux`
+
+1) SSH into the remote machine.
+
+2) Install `tmux`:
+```
+$ apt install tmux
+```
+
+3) Start `tmux`:
+```
+$ tmux
+```
+
+4) Start the process you want inside the started `tmux` session.
+
+5) Leave/detach the `tmux` session by typing `Ctrl+b` and then `d`.
+
+6) You can now safely log off from the remote machine, your process will keep running inside `tmux`.
+
+7) When you come back again and want to check the status of your process you can attach to your tmux session using:
+```
+$ tmux attach
+```
+
+If you want to have multiple sessions running side-by-side, you should name each session using `Ctrl+b` and `$`. 
+
+You can get a list of the currently running sessions using:
+```
+$ tmux list-sessions
+```
+or 
+```
+$ tmux ls
+```
+
+To attach to a running session with use:
+```
+$ tmux attach-session -t <session-name>
+```