Here’s a script for quickly checking on how much disk space you have on a system and how much of it is in use. It certainly beats using a calculator to tally up the columns in “df -k” output ...

Is your Linux server running out of storage space? If you're not sure how to find that out, these three commands are important to learn.

Even though hard drives and SSDs offer plenty of space these days, sometimes it seems you never have enough. The standard Linux tools for checking disk space or du and df.

Checking disk space To get a quick look at disk usage by user, you can run a command like the one below. Notice that it requires sudo and uses the “s” argument to give summaries by user.