The Unix file system (UFS) is a family of file systems supported by many Unix and Unix-like operating systems. It is a distant descendant of the original...

The Unix file types are the categories of file formats that a Unix-based system uses to provide context-sensitive behavior of file system items – all of...

In Unix and Unix-like computer operating systems, a file descriptor (FD, less frequently fildes) is a process-unique identifier (handle) for a file or...

file is a shell command for reporting the type of data contained in a file. It is commonly supported in Unix and Unix-like operating systems. As the command...

1970, the Unix epoch. For example, at midnight on 1 January 2010, Unix time was 1262304000. Unix time originated as the system time of Unix operating...

Unix (/ˈjuːnɪks/ , YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T...

developed for Unix and later codified by POSIX. Another common technology is an access-control list (ACL) with multiple variants implemented in file systems...

In Unix and operating systems inspired by it, the file system is considered a central component of the operating system. It was also one of the first...

(short for manual page) is a form of software documentation found on Unix and Unix-like operating systems. Topics covered include programs, system libraries...

In Unix-like operating systems, a device file, device node, or special file is an interface to a device driver that appears in a file system as if it were...

In a computer file system, and primarily used in the Unix and Unix-like operating systems, the root directory is the first or top-most directory in a hierarchy...

interpreter to use to execute the file. The shebang must be the first line of the file, and start with "#!". In Unix-like operating systems, the characters...

command for maintaining multiple files as a single archive file. Originally developed for Unix, it is widely available on Unix-based systems, and similar commands...

patch is a Unix program that updates text files according to instructions contained in a separate file, called a patch file. The patch file (also called...

developed for Unix, it is available on many operating systems and shells today. In addition to combining files, cat is commonly used to copy files and in particular...

writing and converting file data. Originally developed for Unix, it has been implemented on many other environments including Unix-like operating systems...

executing in the same Unix or Unix-like operating system. The name, Unix domain socket, refers to the domain argument value AF_UNIX that is passed to the...

The command was introduced to Unix in January 1979, replacing the tp program (which in turn replaced "tap"). The file structure was standardized in POSIX...

can bring the file back if its storage was not reused. Originally, developed for Unix, today it is also available on Unix-like and non Unix-like systems...

A Unix shell is a command-line interpreter or shell that provides a command line user interface for Unix-like operating systems. The shell is both an interactive...

Unix System V (pronounced: "System Five") is one of the first commercial versions of the Unix operating system. It was originally developed by AT&T and...

In computing, tty is a command in Unix and Unix-like operating systems to print the file name of the terminal connected to standard input. tty stands for...

a command in Unix, Plan 9, Inferno, and Unix-like operating systems. The program reads either standard input or a list of computer files and generates...

This preserves the file's inode instead of creating a new file with default permissions. The command was part of Version 1 Unix, and is specified by...

logic and often fewer build files. Make is widely used in part due to its early inclusion in Unix, starting with PWB/UNIX 1.0, which featured a variety...

is a shell command for reporting file system storage use – space used for a file or a directory tree. The Single UNIX Specification (SUS) specifies that...

file with a shebang is used as if it were an executable in a Unix-like operating system, the program loader mechanism parses the rest of the file's initial...

for listing files – including special files such as directories. Originally developed for Unix and later codified by POSIX and Single UNIX Specification...

In the Unix operating system, shar (from "shell archive") is an archive format created with the Unix shar utility. A shar file is a type of self-extracting...

"Everything is a file" is an approach to interface design in Unix derivatives. While this turn of phrase does not as such figure as a Unix design principle...