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 UWA week 37 (2nd semester, week 7) ↓
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ANONYMOUS wrote:
> Do I iterate through every single line in crontab-file, testing if the minute and hour are equal to the current minute and hour? Or if the crontab hour is a "*" and the current minute is 0? etc. This doesn't seem efficient, there would have to be a dozen "if-or-or-or" statements to account for the multiple different combinations of "*" characters and integer entries that could lead to the current minute being a valid time for a process to be started.
That's about the simplest approach - iterate through each of the 40K+ minutes of the month, checking to see if any of the crontab entries match the current time/date. Do not worry about efficiency for your first 'attempt' - in fact don't worry about efficiency at all (unless your execution time is horrendous). Your desktop or laptop computer can perform at least 1 BILLION comparisons per second, so it's unlikely you'll even be able to develop a slow solution!

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