I've read several questions about using cron to schedule searches and I haven't seen a format the specifies every 12 hours at 6am and 6pm. I tried a few things like
0 6/12 * * * and even 0 (6,18) * * * to no avail.
Can it be done?
0 6/12 * * *
0 (6,18) * * *
Have you tried the following:
* 6,18 * * *
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Wow, so simple and I tried lots of complicated permutations. Thank you.