How to check free disk space in Linux

How to check free disk space in Linux

Keep track of disk utilization with this handy list of commands.

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Image credits : 
Lewis Cowles, CC BY-SA 4.0
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Keeping track of disk utilization information is on system administrators' (and others') daily to-do list. Linux has a few built-in utilities that help provide that information.

df

The df command stands for "disk-free," and shows available and used disk space on the Linux system.

df -h shows disk space in human-readable format

df -a shows the file system's complete disk usage even if the Available field is 0

df -T shows the disk usage along with each block's filesystem type (e.g., xfs, ext2, ext3, btrfs, etc.)

df -i shows used and free inodes

du

du shows the disk usage of files, folders, etc. in the default kilobyte size

du -h shows disk usage in human-readable format for all directories and subdirectories

du -a shows disk usage for all files

du -s provides total disk space used by a particular file or directory

The following commands will check your total space and your utilized space.

ls -al

ls -al lists the entire contents, along with their size, of a particular directory

stat

stat <file/directory> displays the size and other stats of a file/directory or a filesystem.

fdisk -l

fdisk -l shows disk size along with disk partitioning information

These are most of the built-in utilities for checking file space in Linux. There are many similar tools, like Disks (GUI), Ncdu, etc., that also show disk space utilization. Do you have a favorite tool that's not on this list? Please share in the comments.

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About the author

Archit Modi - OpenStack enthusiast. Linux and Networking guy. Currently working as a Software Test Engineer at Red Hat, involved in Nova project- OpenStack. Just trying to give my two cents in this billion-trillion dollar "Open Source" world.