Hi Monks!
I have a tool (written in Perl in Linux env) which keeps configurations in user's home directory (or a path that he provides). I noticed that users open a lot of tickets lately, complaining about different issues that caused by overfilled home directory (after some debugging).
I want to add some code which checks the size of used space, and if it's more than 90%, I want to print a warning to the stdout, saying that you might get different errors. I'm familiar with df and du, but I was wondering what would be the right way to do it (Maybe a basic Perl way, without installing additional modules)? As I understand, the pseudo code should look something like: 
my $used_space = get_used_space($path);
if ($used_space >= 90) {
    print("Warning: please clean the directory: $path\n");
}

[download]
I'm also opened to other suggestion on how to warn the user.
Also, please note that we provide an option to choose a specific path (and not use the default home directory), so the check should be performed on $path and not just ~/.

In reply to How to know how much used space of a path? by ovedpo15

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