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The e4fsprogs package contains a number of utilities for creating, checking, modifying, and correcting any inconsistencies in the fourth extended (ext4) filesystem. E4fsprogs contains e4fsck (used to repair filesystem inconsistencies after an unclean shutdown), mke4fs (used to initialize a partition to contain an empty ext4 filesystem), debugfs (used to examine the internal structure of a filesystem, to manually repair a corrupted filesystem, or to create test cases for e4fsck), tune4fs (used to modify filesystem parameters), and most of the other core ext4fs filesystem utilities. Please note that "e4fsprogs" simply contains renamed static binaries from the equivalent upstream e2fsprogs release; it is packaged this way for Red Hat Enterprise Linux 5 to ensure that the many changes included for ext4 do not destabilize the core e2fsprogs in RHEL5. You should install the e4fsprogs package if you need to manage the performance of an ext4 filesystem.
e4fsprogs-libs contains the libraries of the e4fsprogs package.
This package contains the Echo icon theme.
Ed is a line-oriented text editor, used to create, display, and modify text files (both interactively and via shell scripts). For most purposes, ed has been replaced in normal usage by full-screen editors (emacs and vi, for example). Ed was the original UNIX editor, and may be used by some programs. In general, however, you probably don't need to install it and you probably won't use it.
efibootmgr displays and allows the user to edit the Intel Extensible Firmware Interface (EFI) Boot Manager variables. Additional information about EFI can be found at http://developer.intel.com/technology/efi/efi.htm and http://uefi.org/.
ejabberd is a Free and Open Source distributed fault-tolerant Jabber/XMPP server. It is mostly written in Erlang, and runs on many platforms (tested on Linux, FreeBSD, NetBSD, Solaris, Mac OS X and Windows NT/2000/XP).
The eject program allows the user to eject removable media (typically CD-ROMs, floppy disks or Iomega Jaz or Zip disks) using software control. Eject can also control some multi-disk CD changers and even some devices' auto-eject features. Install eject if you'd like to eject removable media using software control.