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Linux: At What Time Cron Entries In cron.daily, cron.weekly, cron.monthly Run?

I have followed this cron setup tutorial. I am using Red Hat Enterprise Linux server 6 on Dell poweredge server. I would like to know when does entries in /etc/cron.daily, /etc/cron.weekly, /etc/cron.monthly run on CentOS/RHEL v6.x/7.x and Debian / Ubuntu Linux server?
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Linux Execute Cron Job After System Reboot

I am on Red Hat Enterprise Linux server. Is there is an easy way to run script or command at boot time after fresh reboot command?
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Linux / UNIX: Change Crontab Email Settings ( MAILTO )

I would like to send an email to user@example.com instead of default system root user for crond service on a Linux or Unix-like system. How do I change the email settings under crontab file on a Linux or Unix-like systems?
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FreeBSD Accounting: Install and Configure System Activity Reporter (SAR)

Q. How do I install sar command under FreeBSD to collect, report, or save system activity information? How can I setup freebsd accounting?
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HowTo: Add Jobs To cron Under Linux or UNIX?

How do I add cron job under Linux or UNIX like operating system?
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