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cron-wait

A tiny tool that waits until a given cron expression would trigger, and then just exits. If multiple expressions are given, it waits until the first (earliest) match.

image

Examples

$ cron-wait "*/5 * * * *"
[cron-wait] 2020/07/10 11:59:29.965045 waiting 30.035156s until next match (2020-07-10T12:00:00+02:00) of cron expression ["*/5 * * * *"]
[cron-wait] 2020/07/10 12:00:00.966919 done
$ cron-wait -print-next-match-and-exit "*/3 * * * *"
2020-07-10T12:48:00+02:00
$ cron-wait -print-delta-and-exit "@hourly"
3308.674034

Contents

Get it

Using go get:

go get -u github.com/keilerkonzept/cron-wait

Or download the binary for your platform from the releases page.

Usage

cron-wait [OPTIONS] [CRON_EXPRESSION [CRON_EXPRESSIONS...]]

Usage of cron-wait:
  -dots
    	Print dots to stdout while waiting
  -format string
    	Timestamp format (default "2006-01-02T15:04:05Z07:00")
  -print-delta-and-exit
    	Only print the duration (in seconds) until the next expression match and exit (without waiting)
  -print-next-match-and-exit
    	Only print the timestamp of the next expression match and exit (without waiting)
  -q	(alias for -quiet)
  -quiet
    	Suppress all output