Run cron now without changing its settings

I have a job scheduled by cron: popping emails from server every hour.

But sometimes I don't want to wait for 60 minutes to check my emails. To do it, I use a script which run the same command I have in crontab. It开发者_如何学编程 is essentially as running the cron before it was scheduled tor run. Is it possible to run cron at particular time without changing it's settings?

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You should be able to use the following:

at now /cron/monthly_save 

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You could achieve this by using the tool anacron, in addition to cron. Forcing execution of a job then becomes as easy as:

anacron -f <your jobname>