I've seen many crontab commands written this way:
*/5 * * * * ~/script.sh >/dev/null 2>&1
Can someone explain what is the exact meaning of 2>&1?
asked Apr 25, 2019 at 22:28
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It's been explained so many times already, I can't believe you haven't searched.stackoverflow.com/questions/818255/…– mikewhateverApr 25, 2019 at 22:30
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Also this askubuntu.com/a/1031663/295286– Sergiy KolodyazhnyyApr 25, 2019 at 22:41
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1 Answer
It's redirecting standard error to standard output using file descriptors.
This isn't a cron construct but a shell construct and is available in pretty much any shell you may come across. 2 is the file descriptor for STDERR and 1 is the file descriptor for STDOUT. The > sign is the redirection operator.
More information about file descriptors and shell redirection can be found here.
