One-click Quadruple Monitoring Startup Script (tmux automate): Jest watch, Alcotest watch, Backend HTTP-Server watch, Frontend HTTP-Server watch

monitoring_start.sh

#!/bin/sh
tmux new-session -s 'S1' \; \
   attach -t 'S1' \; \
   set -g pane-border-status top \; \
   set -g base-index 1 \; \
   set -g pane-base-index 1 \; \
   rename-window -t 0 'W0' \; \
   \
   select-pane -T "Jest watch" \; \
   send-keys 'npm run watch:test' C-m \; \
   \
   split-window -v -p 34 \; \
   select-pane -T "Backend HTTP-Server" \; \
   send-keys 'esy build dune exec backend/App.exe' C-m \; \
   \
   split-window -h -p 55 \; \
   select-pane -T "Frontend HTTP-Server" \; \
   send-keys 'npm run server' C-m \; \
   \
   select-pane -t 1 \; \
   split-window -h -p 45 \; \
   select-pane -T "Alcotest watch" \; \
   send-keys 'esy watch:test' C-m \;

if you move the script above in to a separate .tmux config file, you can ommit the semicolons and newlines at each end of line (thx to @the_spyder!).