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  2. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    This permission must be set for executable programs, in order to allow the operating system to run them. When set for a directory, the execute permission is interpreted as the search permission: it grants the ability to access file contents and meta-information if its name is known, but not list files inside the directory, unless read is set also.

  3. umask - Wikipedia

    en.wikipedia.org/wiki/Umask

    $ 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 ...

  4. Compatibility layer - Wikipedia

    en.wikipedia.org/wiki/Compatibility_layer

    Lina, which runs some Linux binaries on Windows, Mac OS X and Unix-like systems with native look and feel. KernelEX, which runs some Windows 2000/XP programs on Windows 98/Me. Executor, which runs 68k-based "classic" Mac OS programs in Windows, Mac OS X and Linux. Anbox, an Android compatibility layer for Linux.

  5. QEMU - Wikipedia

    en.wikipedia.org/wiki/QEMU

    It is one of the few pieces of virtual machine software available for Android capable of emulating Microsoft Windows, [32] although it was designed to emulate Linux and DOS. Unlike other QEMU-based emulators, it does not require users to type commands to use, instead having a user interface to set the virtual machine's settings.

  6. Bochs - Wikipedia

    en.wikipedia.org/wiki/Bochs

    Many guest operating systems can be run using the emulator including DOS, several versions of Linux, Xenix, Microsoft Windows, BSDs and Rhapsody OS (precursor of Mac OS X Public Beta). Bochs runs on many host operating systems, including Android OS, Linux, macOS, PlayStation 2, Windows, and Windows CE along with its derivatives.

  7. Windows Subsystem for Linux - Wikipedia

    en.wikipedia.org/wiki/Windows_Subsystem_for_Linux

    GUI support for WSL 2 to run Linux applications with graphical user interfaces (GUIs) was introduced in Windows build 21364. [18] Both of them are shipped in Windows 11. In April 2021, Microsoft released a Windows 10 test build that also includes the ability to run Linux graphical user interface (GUI) apps using WSL 2 and CBL-Mariner.

  8. Executable-space protection - Wikipedia

    en.wikipedia.org/wiki/Executable-space_protection

    The Linux kernel supports the NX bit on x86-64 and IA-32 processors that support it, such as modern 64-bit processors made by AMD, Intel, Transmeta and VIA. The support for this feature in the 64-bit mode on x86-64 CPUs was added in 2004 by Andi Kleen, and later the same year, Ingo Molnár added support for it in 32-bit mode on 64-bit CPUs.

  9. Wine (software) - Wikipedia

    en.wikipedia.org/wiki/Wine_(software)

    Bob Amstadt, the initial project leader, and Eric Youngdale started the Wine project in 1993 as a way to run Windows applications on Linux.It was inspired by two Sun Microsystems products, Wabi for the Solaris operating system, and the Public Windows Interface, [10] which was an attempt to get the Windows API fully reimplemented in the public domain as an ISO standard but rejected due to ...