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How to recycle log files in Debian

Apr 13, 2025 am 08:03 AM
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How to recycle log files in Debian

The log files of the Debian system are usually stored in the /var/log directory. To effectively manage these log files and avoid taking up too much disk space, you can clean or compress them by following methods:

Method 1: Use the logrotate tool

The Debian system has built-in logrotate tool, which can automatically manage the rotation, compression and deletion of log files. Its configuration file is located in /etc/logrotate.conf , and the specific log file configuration is located in /etc/logrotate.d/ directory.

You can run logrotate manually with the following command:

 sudo logrotate /etc/logrotate.conf

Or, rotate for a specific service (such as rsyslog):

 sudo logrotate -f /etc/logrotate.d/rsyslog

The -f option means enforcement and will run even if the configuration file does not expire.

Method 2: Manually clean the log files

If you need to manually clean the log files, you can use rm (delete) or gzip (compress) commands. For example, delete the /var/log/syslog file:

 sudo rm /var/log/syslog

Compress /var/log/syslog files:

 sudo gzip /var/log/syslog

Important: Before deleting or compressing log files, be sure to carefully consider their impact and make sure that the necessary information has been backed up. Log files may need to be kept for some time to meet compliance requirements or for troubleshooting. It is recommended to use the logrotate tool first, as it provides a safer and more reliable log file management mechanism.

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