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The e2fsprogs package contains a number of utilities for creating, checking, modifying, and correcting any inconsistencies in second, third and fourth extended (ext2/ext3/ext4) filesystems. E2fsprogs contains e2fsck (used to repair filesystem inconsistencies after an unclean shutdown), mke2fs (used to initialize a partition to contain an empty ext2 filesystem), debugfs (used to examine the internal structure of a filesystem, to manually repair a corrupted filesystem, or to create test cases for e2fsck), tune2fs (used to modify filesystem parameters), and most of the other core ext2fs filesystem utilities. You should install the e2fsprogs package if you need to manage the performance of an ext2, ext3, or ext4 filesystem.
E2fsprogs-libs contains libe2p and libext2fs, the libraries of the e2fsprogs package. These libraries are used to directly access ext2/3/4 filesystems from userspace.
Ethernet bridge tables is a firewalling tool to transparently filter network traffic passing a bridge. The filtering possibilities are limited to link layer filtering and some basic filtering on higher network layers. This tool is the userspace control for the bridge and ebtables kernel components (built by default in Fedora kernels). The ebtables tool can be used together with the other Linux filtering tools, like iptables. There are no known incompatibility issues.
ECJ is the Java bytecode compiler of the Eclipse Platform. It is also known as the JDT Core batch compiler.
Eclipse OSGi - Equinox
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.
Elfutils is a collection of utilities, including stack (to show backtraces), nm (for listing symbols from object files), size (for listing the section sizes of an object or archive file), strip (for discarding symbols), readelf (to see the raw ELF file structures), elflint (to check for well-formed ELF files) and elfcompress (to compress or decompress ELF sections).
The elfutils-libelf package provides a DSO which allows reading and writing ELF files on a high level. Third party programs depend on this package to read internals of ELF files. The programs of the elfutils package use it also to generate new ELF files.
The elfutils-libs package contains libraries which implement DWARF, ELF, and machine-specific ELF handling and process introspection. These libraries are used by the programs in the elfutils package. The elfutils-devel package enables building other programs using these libraries.
Elinks is a text-based Web browser. Elinks does not display any images, but it does support frames, tables and most other HTML tags. Elinks' advantage over graphical browsers is its speed--Elinks starts and exits quickly and swiftly displays Web pages.