![]() ![]() The default behavior is to use anacron, but this can be changed by a server, workstation or notebook administrator. They are run differently, however, based on the process assigned to call them, anacron or cron. These show up as directories that the cron system calls based on their naming conventions. Starting Easy - The cron Dot Directories ¶īuilt into every Linux system for many versions now, the cron "dot" directories help to automate processes quickly. For more on anacron see anacron - Automating commands. You can mix and match based on your needs. Still, server administrators and workstation or notebook users can gain something from both approaches. That is where cron provides the best solution for server administrators. This can be a problem for things such as server backups, for instance, needing to run a job at a specific time. This makes sense for workstations and laptops, but not so much for servers. anacron though, uses a more randomized approach to running tasks where the timing is not exact. With anacron the job is picked up and run when the machine is on again, even if the scheduled run was in the past. The reason for this is that while cron runs jobs on a schedule, if the machine is off when the job is scheduled, the job does not run. anacron is run by cron, and is helpful for machines that are not up all the time, such as workstations and laptops. It is a good refresher for those with some experience, and new users can add the cron system to their repertoire.Īnacron is discussed briefly here in reference to the cron "dot" directories. This document will explore some of these. ![]() The crontab is essentially a list where users add their own automated tasks and jobs, and it has many options that can simplify things even further. Want a script or program to run every day at 5 PM? This is where you set that up. Linux provides the cron system, a time-based job scheduler, for automating processes. In this case, switching to root is not necessary.) (You can run certain scripts in your own directories as your own user. That you are either running as the root user or have switched to root with sudo -s.Basic knowledge of bash, python, or other scripting or programming tools, and you want to have a script run automatically.Some comfort with modifying configuration files from the command-line by using your favorite editor (using vi here).Job automation automation cron Automating Processes with cron and crontab ¶ Prerequisites ¶ Verifying DISA STIG Compliance with OpenSCAP - Part 2 Host-based Intrustion Detection System (HIDS)īash - Conditional structures if and case Building and Installing Custom Linux KernelsĪutomatic Template Creation - Packer - Ansible - VMware vSphere ![]()
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