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joplin notion extension/linux/tmux.md

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+tmux
+https://www.youtube.com/watch?v=U41BTVZLKB0
+https://tmuxcheatsheet.com/
+![Tmux Cheat Sheet & Quick Reference _ Session, window, pane and more.pdf](../../_resources/Tmux%20Cheat%20Sheet%20&%20Quick%20Reference%20_%20Session,%20wind.pdf)
+
+
+
+- Start a new window with `tmux` command
+- At the bottom-left of screen there is `[0] 0:bash*  `
+   `[0]` : session name
+   `0` from `0:bash` : index
+   `bash` : windows name
+   `*` : current window
+- to start a session with custom name use  `tmux new -s backups` or `tmux new-session -s backups`. to rename current session use `c-b $`. to close the particular session use `tmux kill-ses -t session_name`. To close current session go to command mode by `c-b :` then type `kill-session` and hit enter.
+-  to create a new window use `c-b c` means press Ctrl+B then release them and instantly press c.
+  to go to next window press `c-b n` and to previous window `c-b p`. to specfic window index press `c-b INDEX`(eg: `c-b 1` to go to 2nd window as 2nd window index is 1). to kill current window use `c-b &`.
+ - when we start a process say `htop` that window name will be changed to `htop`. but in order to change window to custom name press `c-b ,` then type type name and enter
+ - **Attach/dettach mode**: If we start a service like nodejs code by `npm start` or any other and donr want terminal to be open and just run in background we need to detach it by `c-b d`. this will detach whole session.
+ To reattach to recent session use `tmux a` or  `tmux at`, `tmux attach`, `tmux attach-session`.
+ To reattach to particular session use `tmux a -t backups` `-t` means target
+- to list tmux sessions use `tmux ls` or `tmux list-sessions`
+- **Switching**  : when in tmux, to switch between sessions use `c-b s` which will presents a tui screen to choose session from and for windows switching use `c-b w`. 
+- To get list of keyboard shotcuts use `c-b ?`
+- Splitting panes : To switch panes horizontally use `c-b %` and for vertically use `c-b "`. To go to last active pane press `c-b ;` and for navigating use `c-b arrow-keys` for respective direction.
+ To close current pane use `c-b x`.
+- to scroll press `c-b [` then use arrowkeys/pgup/pgdown keys to scroll 
+- **Icons** : start tmux with `tmux -u` to enable unicode support.
+   
+
+automatic adding and running commands in tmux 
+```sh
+#!/bin/bash
+
+SESSION="my_session"
+
+tmux  new-session -d -s  $SESSION
+
+#C-m emulates pressing enter key
+tmux send-keys -t $SESSION:0 "htop" C-m
+
+#create a new window of index 1 with name 'logs'
+tmux new-window -t $SESSION:1 -n "logs"
+tmux send-keys -t $SESSION:1 "history" C-m
+
+tmux new-window -t $SESSION:2 -n "monitor"
+tmux send-keys -t $SESSION:2 "while true; do echo 'Monitoring...'; sleep 5; done" C-m
+
+tmux attach-session -t $SESSION```