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The Preferred Executable Format is a file format that specifies the format of executable files and other object code. PEF executables are also called Code Fragment Manager files (CFM). PEF was developed by Apple Computer for use in its classic Mac OS operating system. It was optimised for RISC processors.
This is a comparison of binary executable file formats which, once loaded by a suitable executable loader, can be directly executed by the CPU rather than being interpreted by software. 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 ...
The concept of a universal binary originated with "Multi-Architecture Binaries" in NeXTSTEP, the main architectural foundation of Mac OS X.NeXTSTEP supports universal binaries so that one executable image can run on multiple architectures, including Motorola's m68k, Intel's x86, Sun Microsystems's SPARC, and Hewlett-Packard's PA-RISC.
(Previously, Apple A/UX also offered a virtualized Mac OS environment on top of a UNIX operating system.) It uses a Mac OS 9 System Folder, and a New World ROM file to bridge the differences between the older PowerPC Macintosh platforms and the XNU kernel environment.
PlayOnMac is a free compatibility layer and emulator for macOS that allows installation and usage of video games and other software initially designed to run exclusively on Microsoft Windows.
An .lproj file is a bundle that contains localization files for OpenStep, macOS, or GNUstep software. It typically contains the .nib files for a given language along with .strings files and images if needed (for example, ReadMe or license files). These localized files are used by installer makers to customize install packages.
Apple has also removed all 32-bit-only apps from the Mac App Store. [33] Z shell (executable "zsh") is the default login shell and interactive shell in macOS Catalina, [34] replacing Bash, the default shell since Mac OS X Panther in 2003. [35] Bash continues to be available in macOS Catalina, along with other shells such as csh/tcsh and ksh.
a file composed of other Mach-Os to be run in the same userspace sharing a single linkedit. After the file type value is the number of load commands and the total number of bytes the load commands are after the Mach-O header, then a 32-bit flag with the following possible settings.