| e2fsprogs | |
| Developer: | Theodore Ts'o |
| Operating System: | Linux, Unix-like |
| Programming Language: | C |
| Genre: | File system utilities |
| License: | GPL |
e2fsprogs (sometimes called the e2fs programs) is a set of utilities for maintaining the ext2, ext3 and ext4 file systems. Since those file systems are often the default for Linux distributions, it is commonly considered to be essential software.
Included with e2fsprogs, ordered by ASCIIbetical order, are:
[[badblocks]] : search a device for bad blocksblkid : 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 : which prints superblock and block group information.
e2freefrag : report free space fragmentation information
e2fsck : an fsck 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 an LVM LV
e2undo : replay an undo log for an ext2/ext3/ext4 filesystem
e4defrag : online defragmenter for ext4 filesystem
filefrag : report on 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 and ext4 file systems. On-line support was added in 2006.[1]
tune2fs : used to modify file system parameters
Many of these utilities are based on the [[libext2fs]] library.
Despite what its name might suggest, e2fsprogs works not only with ext2, but also with ext3 and ext4. Although ext3's journaling capability can reduce the need to use e2fsck, it is sometimes still necessary to help protect against kernel bugs or bad hardware.
With ext4 the e2fsck runtime should come down considerably, as can be seen from the graph.
As the userspace companion for the ext2, ext3, and ext4 drivers in the Linux kernel, the e2fsprogs are most commonly used with Linux. However, they have been ported to other systems, such as FreeBSD and Darwin.