In computing, the Executable and Linkable Format ( ELF, formerly called Extensible Linking Format ) is a common standard file format for executables, object code, shared libraries, and core dumps.

* Symbian OS v9 uses E32Image format that is based on the ELF file format ;

The ELF file format is also used with the Atmel AVR ( 8-bit ), AVR32 and with Texas Instruments MSP430 microcontroller architectures.

All versions of FASM can directly output any of the following: flat " raw " binary ( usable also as DOS COM executable or SYS driver ), objects: Executable and Linkable Format ( ELF ) or Common Object File Format ( COFF ) ( classic or MS-specific ), or executables in either MZ, ELF, or Portable Executable ( PE ) format ( including WDM drivers, allows custom MZ DOS stub ).

It was introduced in Unix System V, replaced the previously used a. out format, and formed the basis for extended specifications such as XCOFF and ECOFF, before being largely replaced by ELF, introduced with SVR4.

There are many different object file formats ; originally each type of computer had its own unique format, but with the advent of Unix and other portable operating systems, some formats, such as COFF and ELF have been defined and used on different kinds of systems.

BusyBox benefits from the single binary approach, as it reduces the overheads introduced by the executable file format ( typically ELF ), and it allows code to be shared between multiple applications without requiring a library.

GNU Hurd, which uses GNU Mach as its microkernel, uses ELF, and not Mach-O, as its standard binary format.

The BeOS uses ELF format executable files, much as many other operating systems.

BeIA uses an extended version of ELF, the name of which is unknown but which has come to be known as CELF, from the CEL magic word within the executable header and the fact that it is derived from ELF format executables through a compression process.

AWStats supports most major web server log file formats including Apache ( NCSA combined / XLF / ELF log format or common / CLF log format ), WebStar, IIS ( W3C log format ) and many other common web server log formats.

The ELF executable format and SO shared library format used by most Unix-like systems allows to define several types of relocations.

Despite this opinion among researchers, evidence has accumulated that supports the existence of complex biological effects of weaker non-thermal electromagnetic fields, ( including weak ELF magnetic fields, although the latter does not strictly qualify as EM radiation < ref >), and modulated RF and microwave fields.

An ELF file has two views: The program header shows the segments used at run-time, whereas the section header lists the set of sections of the binary.

ELF has also seen some adoption in non-Unix operating systems, such as:

* AmigaOS 4, the ELF executable has replaced the previous EHF ( Extended Hunk Format ) which was used on Amigas equipped with PPC processor expansion cards.

PETA was further criticized in 2005 by United States Senator Jim Inhofe for having given grants several years earlier to Animal Liberation Front ( ALF ) and Earth Liberation Front ( ELF ) activists, two groups that the Federal Bureau of Investigation has identified as agents of domestic terrorism.

PETA responded that it has no involvement in ALF or ELF actions and does not support violence, though Newkirk has elsewhere made clear that she supports the removal of animals from laboratories and other facilities, including as a result of illegal direct action.

To date no one has been killed as a result of an ELF or ALF action since both groups forbid harming human or non-human life .< ref name = rel > Bron Taylor ( 1998 ).

She has exhibited at many shows and lectured widely at venues such as World Science Fiction Conventions, San Diego Comic Cons, The Singapore Writers Festival, and Comics Masterclass in Sydney Australia, as well as many The Lord of the Rings conventions including Ring * Con, ELF, and ORC.

The ELF has been attributed with arsons of sites such as housing developments, SUV dealerships, and chain stores.

The FBI has stated that “ since 2005 … investigations have resulted in indictments against 30 individuals .” In 2006, an FBI case labeled ‘ Operation Backfire ’ brought charges of domestic terrorism to eleven people associated with the ELF and ALF.

The International Agency for Research on Cancer ( IARC ) has evaluated the scientific data and has classified ELF magnetic fields as being " possibly carcinogenic " to humans.

The name is a medieval fantasy complement to " ELF " that has no official meaning, although the backronym ' Debugging With Attributed Record Formats ' was later proposed.

efc, the ELF Fan Club ( エルフＦＣ ), has an active membership.

It has support for Zip, RAR, Tar, Gzip, Bzip2, OLE2, Cabinet, CHM, BinHex, SIS formats, most mail file formats, ELF executables and Portable Executable ( PE ) files compressed with UPX, FSG, Petite, NsPack, wwpack32, MEW, Upack and obfuscated with SUE, Y0da Cryptor.

Mike Riley has written an editor, assembler, BASIC and FORTH interpreters, a BIOS, and the Elf / OS disk operating system that will run on expanded ELF systems, including the COSMAC Elf 2000.

Luers has at times been a cause célèbre among some radicals, anti-prison activists, and individuals associated with the Earth Liberation Front ( ELF ), although Luers has said that he does not consider himself to be an ELF member.

, adapted into English as Immoral Sisters, is an eroge series published by ELF Corporation that has been made into a series of hentai anime released by Pink Pineapple.

This airborne communications capability largely replaced the land based extremely low frequency ( ELF ) broadcast sites that became vulnerable to nuclear strike.

With the release of SVR4, AT & T replaced COFF with ELF.

Unlike many proprietary executable file formats, ELF is flexible and extensible, and it is not bound to any particular processor or architecture.

* The Unix utility can display some information about ELF files, including the instruction set architecture for which the code in a relocatable, executable, or shared object file is intended, or on which an ELF core dump was produced.

* exec ( execution server ): Translates an executable image ( currently ELF and a. out are supported ) to a runnable image in memory.

Typical combined executable and shared library formats are ELF and Mach-O ( both in Unix ) and PE ( Windows ).

A few segment names of a typical ELF executable file are listed below.

Consider an ELF executable file of size 10K.

Exec Shield only checks for two ELF header markings, which dictate whether the stack or heap needs to be executable.

The CELF ( Compressed ELF ) files use a patented technique to compress the op codes within the executable and reduce the overall footprint of each executable file.

While both Delphi and Kylix run on 32-bit Intel processors, Linux uses different register conventions than Windows and, of course, the executable and library file formats are different ; see DLL, EXE, ELF for details.

On Linux systems, vmlinux is a statically linked executable file that contains the Linux kernel in one of the object file formats supported by Linux, which includes ELF, COFF and a. out.

This is the ELF header from an x86-64 Gentoo 2. 6. 29 executable kernel image.

program: ELF 32-bit LSB executable, Intel 80386, version 1 ( SYSV ), dynamically linked

Coreboot usually loads a Linux kernel, but it can load any other stand-alone ELF executable, such as Etherboot, which can boot Linux over a network, or SeaBIOS, which can load Linux, Microsoft Windows 2000 and later, and * BSD ( previously, Windows 2000 / XP and OpenBSD support was provided by ADLO ).

* BurnEye is widely believed to be one of the first proper ELF executable crypters.