Filesystems

Filesystems define how data and metadata are structured on block devices. Common types include ext4, xfs, and btrfs.

Identifying filesystem type

Input:

lsblk -f

Output:

NAME FSTYPE LABEL UUID                                 MOUNTPOINT
sda
└─sda1 ext4         1a23bcd1-9f2e-4c77-afc2-b26a7f903b55 /

This lists devices with filesystem type, label, and UUID.

References:

• https://man7.org/linux/man-pages/man8/lsblk.8.html
• https://man7.org/linux/man-pages/man5/filesystems.5.html

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