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e2fsprogs

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Software to maintain ext* file systems

e2fsprogs
Developer	Theodore Ts'o

Stable release	1.47.3^[1] / 8 July 2025; 7 months ago (8 July 2025)

Written in	C
Operating system	Linux,Unix-like
Type	File system utilities
License	GPL
Website	e2fsprogs.sourceforge.net
Repository	git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git

e2fsprogs (sometimes called thee2fs programs) is a set of utilities for maintaining theext2,ext3 andext4 file systems for theLinux kernel. Since those file systems are often the default forLinux distributions, it is commonly considered to be essential software.

List of utilities

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Included with e2fsprogs, ordered byASCIIbetical order, are:

badblocks: search a device for bad blocks
blkid: locate/print block device attributes
chattr: change file attributes on a Linux file system
debugfs: used to manually view or modify internal structures of the file system
dumpe2fs: prints superblock and block group information.
e2freefrag: report free space fragmentation information
e2fsck: anfsck program that checks for and corrects inconsistencies
e2image: save critical ext2/ext3/ext4 filesystem metadata to a file
e2label: change the label on an ext2/ext3/ext4 filesystem
e2scrub: check a filesystem "online" (i.e. without having to unmount it) in the case where the filesystem is on anLVM LV
e2undo: replay an undo log for an ext2/ext3/ext4 filesystem
e4defrag: online defragmenter for ext4 filesystems
filefrag: report file fragmentation
findfs: find a filesystem by label or UUID
findsuper: quick hacked up program to find ext2 superblocks
logsave: save the output of a command in a logfile
lsattr: list file attributes on a Linux second extended file system
mke2fs: used for creating ext2, ext3 and ext4 file systems
resize2fs: which can expand and shrink ext2, ext3 andext4 file systems. On-line support was added in 2006.^[2]
tune2fs: used to modify file system parameters

Many of these utilities are based on thelibext2fs library.

Usage

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Despite what its name might suggest, e2fsprogs works not only with ext2, but also with ext3 and ext4. Although ext3'sjournaling capability can reduce the need to usee2fsck, it is sometimes still necessary to help protect against kernel bugs or bad hardware.

As theuserspace companion for the ext2, ext3, and ext4 drivers in theLinux kernel, the e2fsprogs are most commonly used withLinux. However, they have been ported to other systems, such asFreeBSD andDarwin.