Dear- In automated tradng, we frequently run same program every one/five minutes, to detect some BUY point under his own BUY logic. For example, with 500 watch list, we compare current price with designated price calculated yesterday night. In this case, we hope to run SAME PROGRAM every five minutes. Can we and how we run same program every five minutes? For example, there is "timer" in Excel VBA. But I could not find similar function in R/Python yet. Also there is "AT" in windows 7. How about in Linux?
In a linux environment, you would use the cron utility to set that up. More info is here: https://en.m.wikipedia.org/wiki/Cron