How to Delete Files Older than 30 days in Linux

Deleting old files in Linux helps keep your system tidy and saves space. If you have files you don’t need anymore that are older than a certain number of days, this guide will show you how to remove them step by step. It’s simple, whether you’re new to Linux or just want a quick reminder. We’ll begin with basic commands and then use them in your terminal.

This article explains how to find and delete files older than a set number of days. “Older” here means the file’s last change was before that many days ago.

1. Delete Files older Than 30 Days

Using the find command, you can search for and delete all files that have been modified more than X days. Also, if required you can delete them with a single command.

First of all, list all files older than 30 days under /opt/backup directory.

find /opt/backup -type f -mtime +30 

Verify the file list and make sure no useful file is listed in the above command. Once confirmed, you are good to go to delete those files with the following command.

find /opt/backup -type f -mtime +30 -delete

2. Delete Files with Specific Extension

You can also specify more filters to locate commands rather than deleting all files. For example, you can only delete files with the “.log” extension and modified before 30 days.

For the safe side, first, do a dry run and list files matching the criteria.

find /var/log -name "*.log" -type f -mtime +30

Once the list is verified, delete those files by running the following command:

find /var/log -name "*.log" -type f -mtime +30 -delete

The above command will delete only files with a .log extension and with the last modification date older than 30 days.

3. Delete Old Directory Recursively

The -delete option may fail if the directory is not empty. In that case, we will use the Linux rm command with find to accomplish the deletion.

Searching all the directories under /var/log modified before 90 days using the command below.

find /var/log -type d -mtime +90

Here we can execute the rm command using -exec command line option. Find command output will be sent to rm command as input.

find /var/log -type d -mtime +30 -exec rm -rf {} \;

Conclusion

This article explains how to find and delete files older than a set number of days. “Older” here means the file’s last change was before that many days ago. By following these steps, you’ll free up space and keep your system organized.

Now you know how to find and remove old files in Linux using the command line. This keeps your system free of clutter and running smoothly. With these skills, you can manage your files better, avoid wasting disk space, and keep everything neat. It’s a quick and easy way to maintain your Linux setup!