DrWeb Updates - cron script interpretation

[bradz]

When I edit the update cron script for DrWeb
/etc/cron.d/drweb-update
I have entered
* 1 * * 0 drweb /opt/drweb/update.pl > /dev/null 2>&1
This should run every sunday at 1am
Or should it be
*/* 1 * * 0 drweb /opt/drweb/update.pl > /dev/null 2>&1
What is the */ for? Is it needed?
Thanks!
Brad

 

[IgorG]

It is cron expressions. The '/' character is used to specify increments. For example "0/15" in the seconds field means "the seconds 0, 15, 30, and 45". And "5/15" in the seconds field means "the seconds 5, 20, 35, and 50". Specifying '*' before the '/' is equivalent to specifying 0 is the value to start with.

 

[bradz]

Thanks!

I had no idea it was so detailed IgorG.
Brad