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A file system is the way in which files are named, stored, retrieved as well as updated on a storage disk or partition; the way files are organized on the disk.

A file system is divided in two segments called: User Data and Metadata (file name, time it was created, modified time, it’s size and location in the directory hierarchy etc).

In this guide, we will explain seven ways to identify your Linux file system type such as Ext2, Ext3, Ext4, BtrFS, GlusterFS plus many more.

1. Using df Command

df command reports file system disk space usage, to include the file system type on a particular disk partition, use the -T flag as below:


2. Using fsck Command

fsck is used to check and optionally repair Linux file systems, it can also print the file system type on specified disk partitions.

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The flag -N disables checking of file system for errors, it just shows what would be done (but all we need is the file system type):


3. Using lsblk Command

lsblk displays block devices, when used with the -f option, it prints file system type on partitions as well:


4. Using mount Command

mount command is used to mount a file system in Linux, it can also be used to mount an ISO image, mount remote Linux filesystem and so much more.

When run without any arguments, it prints info about disk partitions including the file system type as below:


5. Using blkid Command

blkid command is used to find or print block device properties, simply specify the disk partition as an argument like so:


6. Using file Command

file command identifies file type, the -s flag enables reading of block or character files and -L enables following of symlinks:


7. Using fstab File

The /etc/fstab is a static file system info (such as mount point, file system type, mount options etc) file:

That’s it! In this guide, we explained seven ways to identify your Linux file system type. Do you know of any method not mentioned here? Share it with us in the comments.

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