If you need to run a command periodically on your Linux server, you might consider using a Systemd timer instead of a cron job. Systemd timers offer more control over your command and are more flexible than Cron jobs. Here's a quick comparison between the two:
A whistle-stop tour of the `facl` package, an implementation of the withdrawn draft POSIX 1003.1e standard
A quick-ish guide to building PHP7 alongside your PHP5 packaged version in Debian Wheezy.
Building Nginx with the pagespeed module
Redirecting server mail for local users to an actual mailbox
Enable DKIM signing support in the Exim4 MTA
A handy intro to setting up the fail2ban log scanning service in Debian
Handy guide to creating a swap file