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In addition to the binary application code, the executables may contain headers and tables with relocation and fixup information as well as various kinds of meta data. Among those formats listed, the ones in most common use are PE (on Microsoft Windows ), ELF (on Linux and most other versions of Unix ), Mach-O (on macOS and iOS ) and MZ (on DOS ).
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.. In computing, the Executable and Linkable Format [2] (ELF, formerly named Extensible Linking Format) is a common standard file format for executable files, object code, shared libraries, and core dumps.
a.out is a file format used in older versions of Unix-like computer operating systems for executables, object code, and, in later systems, shared libraries.This is an abbreviated form of "assembler output", the filename of the output of Ken Thompson's PDP-7 assembler. [1]
It then uses the system C compiler to compile the source shell script and build a stripped binary which behaves exactly like the original script. Upon execution, the compiled binary will decrypt and execute the code with the shells'-c option. [2]
binfmt_misc (Miscellaneous Binary Format) is a capability of the Linux kernel which allows arbitrary executable file formats to be recognized and passed to certain user space applications, such as emulators and virtual machines. [1] It is one of a number of binary format handlers in the kernel that are involved in preparing a user-space program ...
Linux kernel boot and decompression process. vmlinux is a statically linked executable file that contains the Linux kernel in one of the object file formats supported by Linux, which includes Executable and Linkable Format (ELF) and Common Object File Format (COFF).
$ umask-S # Show the (frequently initial) setting u=rwx,g=rx,o=rx $ gcc hello.c # compile and create executable file a.out $ ls-l a.out-rwxr-xr-x 1 me developer 6010 Jul 10 17:10 a.out $ # the umask prohibited Write permission for Group and Others $ ls > listOfMyFiles # output file created by redirection does not attempt to set eXecute $ ls-l ...
The suEXEC feature consists of a module for the web server and a binary executable which acts as a wrapper. suEXEC was introduced in Apache 1.2 and is often included in the default Apache package provided by most Linux distributions.