run all cron jobs under crontab

Question

I hope I am asking this question correctly. I am trying to run all jobs that are setup on my server, by nano /etc/crontab I see the list of:

# m h dom mon dow user  command
27 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
58 15    * * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
0 15    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
20 15    1 * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#

Is it possible to execute crontab to kick off all these jobs, or force them to run?

I am trying to confirm they are actually running.

Answer 1

If you want to check if they are executed, use grep cron /var/log/syslog.