How to implement the deletion of files before reaching a certain amount of free space?

Question

linux

Hello!

The task is to write a Python script that would delete files from a certain directory not completely, but before reaching a given threshold of free space.

What is the best way to implement this?

Answer 1

It's very simple - read the output of the du command with the -s switch
. And only then decide what and how to delete.

[email protected] ~> du -s /var/www/media
131268256	/var/www/media
[email protected] ~>

Of course, you can go through all the subdirectories in python and count the sizes of all files. But why, if there is already a utility.

import subprocess
proc = subprocess.run(["du","-s","/var/www/media"], stdout=subprocess.PIPE)
folder_size = int(proc.stdout.decode('utf-8').split('\t')[0])

Well, you can delete it with the rm command

Answer 2

1. See how much free space is left;
2. If not enough, then delete the files from the directory;
3. Repeat.
You need the os module.
Everything.

Answer 3

Why python, when bash is just right for such tasks, or even find?
Why do you need to delete when you run out of space, and not initially adjust the rotation of files that grow - this is how it is done in normal cases