These tables provide a comparison of operating systems, of computer devices, as listing general and technical information for a number of widely used and currently available PC or handheld (including smartphone and tablet computer) operating systems. The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers. Because of the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed comparison. There is also a variety of BSD and DOS operating systems, covered in comparison of BSD operating systems and comparison of DOS operating systems. General information Technical information Security Commands For POSIX compliant (or partly compliant) systems like FreeBSD, Linux, macOS or Solaris, the basic commands are the same because they are standardized. NOTE: Linux systems may vary by distribution which specific program, or even 'command' is called, via the POSIX function. For example, if you wanted to use the DOS to give you a directory listing with one detailed file listing per line you could use (e.g. in a session configuration file). See also Comparison of command shells Comparison of file systems List of operating systems Light-weight Linux distribution Security-focused operating system Timeline of operating systems Usage share of operating systems Operating system comparisons Comparison of BSD operating systems Comparison of DOS operating systems Comparison of IPv6 support in operating systems Comparison of operating system kernels Comparison of Linux distributions Comparison of netbook-oriented Linux distributions Comparison of Microsoft Windows versions Comparison of mobile operating systems Comparison of open-source operating systems Comparison of real-time operating systems Comparison of OpenSolaris distributions Comparison of Windows Vista and Windows XP References External links Comparison of operating systems Comparisons