Simple utility for run multiple instances of one application with template environment and command line.
Very useful for testing purpose.
Template engine - templayed.js
npm install -g runbatch
you need to start multiple TCP listeners from 9000 to 9099
runbatch -c 100 -- nc -l '{{index + 9000}}'
some process will not close after SIGINT close: specify maximum graceful timeout in ms by -t, --timeout <ms>
runbatch -t 10000 -- app
# wait for 10 seconds after SIGTERM and then send SIGKILL (terminate)
if you need stop every processes after first fail (non-zero code) you can use -f, --fail-fast flag
runbatch -f -- nc -l '{{index + 9000}}'
# if at least one nc not bind then every one are closed
you can set template environment variable by flag -e, --env [key=value]
runbatch -e "NODE_ID={{index}}" -- app