/etc/cron.weekly Directory Explained
Scripts running every week
/etc/cron.weekly directory contains scripts that are run on a weekly basis by the cron daemon.
These scripts are generally shell scripts, though they can be written in any language as long as the script is
executable. The scripts in this directory are invoked by
run-parts, a helper command that runs all scripts located in
a specific directory.
In the example above,
my_script is a script that gets executed once a week.
What It Is Used For
/etc/cron.weekly directory is primarily used for system maintenance tasks that need to be performed on a weekly
basis. For example, you might have a script that cleans up temporary files, updates the locate database, or generates
Why It Is Important
Regular system maintenance is crucial for the smooth operation of a Linux server. Having a dedicated directory where you can place scripts to be run on a weekly basis allows for better organization and easier management of these tasks.
/etc/cron.weekly directory, along with the other cron
/etc/cron.hourly), provides a simple and effective way to automate system
Relation to Other Directories/Commands/Files
/etc/cron.weekly directory is part of the larger cron system on a Linux server. The cron daemon, which runs in the
background, checks the
/etc/crontab file and
/etc/cron.weekly directories to see if there are any tasks that need to be run.
The cron daemon uses the
run-parts command to run the scripts in the
directory. This command checks each script in the directory to see if it's executable and, if it is, runs the script.
Potential Problems and Pitfalls
One potential problem with scripts in the
/etc/cron.weekly directory is that if they take too long to run, they can
overlap with other cron jobs, potentially leading to system performance issues. It's also possible that long-running
scripts could overlap with themselves if they take more than a week to run.
Another potential issue is that if a script in the
/etc/cron.weekly directory fails to run correctly, it may not be
immediately obvious. Because these scripts are run in the background, a failed script might go unnoticed for a while,
leading to potential issues down the line.
To avoid these problems, it's important to monitor the outputs of your cron jobs. This can be done by redirecting the output of each script to a log file.
/etc/cron.weekly/my_script >> /var/log/my_script.log 2>&1
In the example above, the output of
my_script is logged to
/etc/cron.weekly directory plays a vital role in automating regular system maintenance tasks on a Linux server.
With careful management and regular monitoring, it can help keep your server running smoothly and efficiently.