Often times as system admins we ask ourselves how do we check the disk space on our system? There are loads of utilities out there that can accomplish this but today we will be covering the du command in linux. du (disk usage) is a Linux CLI utility that allows users to see the estimated amount of disk space used by their files and directories. Unlike the df command, which gives a more detailed info of the file system type , du provides a "at a glance" overview about the filesystem type. If you already haven't added the df and du commands to check out, then you are missing out! du provides an easy way to check disk space in Linux. du has a variety of options and flags, but I’ll be focusing on a handful of go-to options that will help on how to check Linux disk space.
