An X86_64 file is a program used by Linux. It runs applications similarly to .EXE files in Windows. X86_64 files come with downloaded games and programs for Linux. You may see an error when opening an X86_64 file. To fix this: Right-click the file, choose Properties, select the Permissions tab, and check Allow executing file as program next to Execute.
If there is still an error opening the file, Linux may be missing libraries needed to run it. You can also open X86_64 files from the command line.
The Executable and Linkable Format (ELF) is a common file format for executables, libraries, and core dumps. It has entry point information and can contain debugging data. The format works for both 32-bit and 64-bit programs by changing header sizes.
AMD designed x86-64 in 1999 as a 64-bit extension of x86. It kept compatibility with existing software. Intel released their own x86-64 CPU in 2004.
Files with the X86 extension work with Linux and Windows. Linux programs like handle these files. X86 files can also be opened in Microsoft Office. The format is typical of system files.
Windows uses Portable Executable (PE) format for executables, which wraps Common Object File Format (COFF) used in object files. A linker parses COFF files and combines them into a PE executable.
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