Nodejs script runs every 6 hours

Question

I have this script using the npm module node-shedule. I think I run it every 6 hours, but it works for an hour, when the hour is 0.6,12,18. it can only be started once. I could fix this dirty with a bool, but that is not my style.

a cronjob on Linux is also not an option, it needs to run cross-platform

let schedule = require('node-schedule'); 
let j = schedule.scheduleJob('* */6 * * *', function() {
do smt
});

Answer 1

This will be done every minute. Change the cron schedule to 0 */6 * * *to run it only when the minute is 0.

Answer 2

You need to do:

let schedule = require('node-schedule'); 

let j = nodeSchedule.scheduleJob('0 0 */5 * * *', function() {
  do smt
});

He will work in the second 0 minute 0 every 6 hours. They use this format.

*    *    *    *    *    *
┬    ┬    ┬    ┬    ┬    ┬
│    │    │    │    │    |
│    │    │    │    │    └ day of week (0 - 7) (0 or 7 is Sun)
│    │    │    │    └───── month (1 - 12)
│    │    │    └────────── day of month (1 - 31)
│    │    └─────────────── hour (0 - 23)
│    └──────────────────── minute (0 - 59)
└───────────────────────── second (0 - 59, optional)