2008年6月19日星期四

e2fsprogs intro.

E2fsprogs: Ext2/3/4 Filesystem Utilities

e2fsprogs (sometimes called the e2fs programs) is a set of utilities for maintaining the ext2 and ext3 and now 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 are:

* e2fsck, a fsck program that checks for and corrects inconsistencies
* mke2fs, used for creating ext2 and ext3 file systems
* resize2fs, which can expand and shrink ext2 and ext3 file systems
* tune2fs, used to modify file system parameters
* dumpe2fs, which prints superblock and block group information.
* debugfs, used to manually view or modify internal structures of the file system

Many of these utilities are based on the libext2fs library.

Despite what its name might suggest, the e2fsprogs work not only with ext2, but also with ext3 and ext4, which is based on ext2. Although ext3's journaling capability can reduce the need to use e2fsck, it is sometimes still necessary to help protect from kernel bugs or bad hardware.

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