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...
51 KB (5,461 words) - 18:40, 30 May 2025
Unix (/ˈjuːnɪks/ , YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T...
59 KB (6,135 words) - 21:49, 25 April 2025
typically implemented using the statfs() or statvfs() system calls. The Single Unix Specification (SUS) specifies that space is reported in blocks of 512 bytes...
7 KB (897 words) - 21:00, 13 April 2025
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...
17 KB (1,966 words) - 06:52, 12 March 2025
files as a single archive file. Originally developed for Unix, it is widely available on Unix-based systems, and similar commands are available on other...
15 KB (1,543 words) - 08:47, 27 May 2025
converting file data. Originally developed for Unix, it has been implemented on many other environments including Unix-like operating systems, Windows, Plan 9...
26 KB (2,852 words) - 07:29, 23 April 2025
The Unix philosophy, originated by Ken Thompson, is a set of cultural norms and philosophical approaches to minimalist, modular software development. It...
18 KB (2,178 words) - 09:47, 23 May 2025
List of POSIX commands (redirect from List of Unix utilities)
which is part of the Single UNIX Specification (SUS). These commands are implemented in many shells on modern Unix, Unix-like and other operating systems...
22 KB (168 words) - 21:13, 18 May 2025
Year 2038 problem (redirect from Unix date bug)
19 January 2038. The problem exists in systems which measure Unix time—the number of seconds elapsed since the Unix epoch (00:00:00 UTC on 1 January 1970)—and store...
28 KB (3,070 words) - 17:28, 5 June 2025
In computing, sort is a standard command line program of Unix and Unix-like operating systems, that prints the lines of its input or concatenation of...
15 KB (1,122 words) - 18:27, 29 April 2025
5% of the total file system size. For more info see core utils faq. The du command first appeared in version 1 of AT&T UNIX. The implementation of du bundled...
6 KB (633 words) - 19:53, 13 April 2025
In Unix-like computer operating systems, a pipeline is a mechanism for inter-process communication using message passing. A pipeline is a set of processes...
19 KB (2,328 words) - 02:15, 3 June 2025
Stat (system call) (redirect from Fstat (Unix))
Version 1 Unix. It is among the few original Unix system calls to change, with Version 4's addition of group permissions and larger file size. Since at...
16 KB (983 words) - 10:42, 12 May 2025
storage was not reused. Originally, developed for Unix, today it is also available on Unix-like and non Unix-like systems, KolibriOS, IBM i, EFI shell. and...
16 KB (1,652 words) - 00:55, 24 May 2025
Single UNIX Specification (SUS) is a standard for computer operating systems, compliance with which is required to qualify for using the "UNIX" trademark...
39 KB (3,853 words) - 22:33, 18 May 2025
interactive command interpreter and command programming language developed for UNIX-like operating systems. Created in 1989 by Brian Fox for the GNU Project...
116 KB (9,488 words) - 09:15, 27 May 2025
most Unix text editors/viewers, less does not need to read the entire file before starting, allowing for immediate viewing regardless of file size. Mark...
9 KB (745 words) - 01:09, 5 May 2025
Ls (redirect from Ls (Unix and Linux command))
developed for Unix and later codified by POSIX and Single UNIX Specification, it is supported in many operating systems today, including Unix-like variants...
12 KB (1,252 words) - 17:53, 23 April 2025
A Unix architecture is a computer operating system system architecture that embodies the Unix philosophy. It may adhere to standards such as the Single...
6 KB (617 words) - 08:04, 3 October 2024
wc (short for word count) is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. The program reads either standard input or a list of...
5 KB (521 words) - 13:46, 27 December 2023
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...
8 KB (967 words) - 01:28, 1 June 2025
Unix, Plan 9, and Unix-like operating systems that evaluates conditional expressions. test was turned into a shell builtin command in 1981 with UNIX System...
9 KB (881 words) - 04:12, 10 November 2024
Disk sector (redirect from Cluster size)
example, the Unix program dd allows one to set the block size to be used during execution with the parameter bs=bytes. This specifies the size of the chunks...
16 KB (1,914 words) - 11:09, 1 September 2024
Tar (computing) (redirect from Tar (Unix))
zero-filled records. (The origin of tar's record size appears to be the 512-byte disk sectors used in the Version 7 Unix file system.) The final block of an archive...
36 KB (4,037 words) - 22:06, 2 April 2025
In computing, cmp is a command-line utility on Unix and Unix-like operating systems that compares two files of any type and writes the results to the...
7 KB (462 words) - 05:25, 4 February 2025
Diff (redirect from Diff (Unix))
is called a "diff", or a patch, since the output can be applied with the Unix program patch. The output of similar file comparison utilities is also called...
40 KB (4,467 words) - 13:49, 14 May 2025
split is a utility on Unix, Plan 9, and Unix-like operating systems most commonly used to split a computer file into two or more smaller files. The split...
4 KB (437 words) - 05:53, 23 January 2025
The history of Unix dates back to the mid-1960s, when the Massachusetts Institute of Technology, Bell Labs, and General Electric were jointly developing...
58 KB (6,900 words) - 04:51, 1 June 2025
In Unix-like operating systems, find is a command-line utility that locates files based on some user-specified criteria and either prints the pathname...
24 KB (2,917 words) - 19:10, 2 November 2024
Research Unix refers to the early versions of the Unix operating system for DEC PDP-7, PDP-11, VAX and Interdata 7/32 and 8/32 computers, developed in...
17 KB (844 words) - 10:07, 18 May 2025