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Family of computer operating systems
Unix (/ˈjuːnɪks/ , YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T
Unix
Date and time representation system widely used in computing
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_time
Operating system that behaves similarly to Unix
A Unix-like operating system (sometimes referred to as a UN*X, *nix or *NIX) is one that behaves in a manner similar to a Unix system, although not necessarily
Unix-like
Unix operating system
Berkeley Software Distribution (BSD), also known as Berkeley Unix, is a discontinued Unix operating system developed and distributed by the Computer Systems
Berkeley Software Distribution
Berkeley_Software_Distribution
Mechanism for inter-process communication using message passing
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
Pipeline_(Unix)
Software development philosophy
The Unix philosophy, originated by Ken Thompson, is a set of cultural norms and philosophical approaches to minimalist, modular software development. It
Unix_philosophy
Original Unix operating system from Bell Labs
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
Research_Unix
GNU replacement for the Bourne shell
is an interactive command interpreter and command language developed for Unix-like operating systems. Supported by the Free Software Foundation and created
Bash_(Unix_shell)
Command-line interpreter for Unix operating system
A Unix shell is a shell that provides a command-line user interface for a Unix-like operating system. A Unix shell provides a command language that can
Unix_shell
Standards for operating systems for using the UNIX trademark
Single UNIX Specification (SUS) is a standard for computer operating systems, compliance with which is required to qualify for using the "UNIX" trademark
Single_UNIX_Specification
Family of Unix-like operating systems
Linux (/ˈlɪnʊks/ LIN-uuks) is a family of free and open-source software Unix-like operating systems based on the Linux kernel, which was first released
Linux
The history of Unix dates back to the mid-1960s, when the Massachusetts Institute of Technology, Bell Labs, and General Electric were jointly developing
History_of_Unix
Communications endpoint for exchanging data between processes
running on the same Unix or Unix-like operating system. The term Unix domain socket refers to the domain argument value AF_UNIX passed to the system
Unix_domain_socket
Symbol "#!", used in computing
When a text 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
Shebang_(Unix)
Directory structure used by a Unix-like operating system
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 parts
Unix_filesystem
Software documentation on Unix systems
short for manual page, is a form of software documentation found on Unix and Unix-like operating systems. Topics covered include programs, system libraries
Man_page
Standard UNIX utility
The Unix command su, which stands for "substitute user" (or historically "superuser"), is used by a computer user to execute commands with the privileges
Su_(Unix)
Computer software bug occurring in 2038
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
Year_2038_problem
Computer program that runs as a background process
computing systems, the term daemon is used almost exclusively in the context of Unix-based systems. In other contexts, different terms are used for the same concept
Daemon_(computing)
1979 minicomputer operating system
Version 7 Unix, also called Seventh Edition Unix, Version 7 or just V7, was an important early release of the Unix operating system. V7, released in 1979
Version_7_Unix
Free software collection
for "GNU's Not Unix!", chosen because GNU's design is Unix-like, but differs from Unix by being free software and containing no Unix code. Stallman chose
GNU
Topics referred to by the same term
Look up unix, Unix, UNIX, UN*X, or *nix in Wiktionary, the free dictionary. Unix may refer to: Unix, a family of operating systems, the first originally
Unix_(disambiguation)
Early commercial UNIX operating system
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
UNIX_System_V
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
List_of_POSIX_commands
Series of Unix operating systems from IBM
AIX (pronounced /ˌeɪ.aɪ.ˈɛks/ ay-eye-EKS) is a series of proprietary Unix operating systems developed and sold by IBM since 1986. The name stands for "Advanced
IBM_AIX
Shell command for copying and converting file data
converting file data. Originally developed for Unix, it has been implemented on many other environments including Unix-like operating systems, Windows, Plan 9
Dd_(Unix)
Struggles between vendors to set Unix standard
The Unix wars were a struggle between vendors to set a standard for the Unix operating system in the late 1980s and early 1990s. Both AT&T Corporation
Unix_wars
Web browser by Microsoft for UNIX systems
Internet Explorer for UNIX is a discontinued version of the Internet Explorer graphical web browser that was available free of charge and produced by Microsoft
Internet_Explorer_for_UNIX
Patterns used in computer programming
the early 1970s alongside the original AT&T UNIX itself and had a formative influence on the syntax of UNIX command line utilities and therefore also on
Glob_(programming)
Computer utility for Unix-like operating systems
nice is a program found on Unix and Unix-like operating systems such as Linux. It directly maps to a kernel call of the same name. nice is used to invoke
Nice_(Unix)
Unix command
yes is a command on Unix and Unix-like operating systems, which outputs an affirmative response, or a user-defined string of text continuously until killed
Yes_(Unix)
Shell command for writing an input file or stream to standard output
abbreviation of catenate, a variant form of concatenate. Originally developed for Unix, it is available on many operating systems and shells today. In addition
Cat_(Unix)
Terminal pager
less is a terminal pager program on Unix, Windows, and Unix-like systems used to view (but not change) the contents of a text file one screen at a time
Less_(Unix)
Software build automation tool
via the operating system shell. Make is widely used, especially in Unix and Unix-like operating systems, even though many competing technologies and
Make_(software)
Computer operating system
Tru64 UNIX is a discontinued 64-bit UNIX operating system for the Alpha instruction set architecture (ISA), currently owned by Hewlett-Packard (HP). Previously
Tru64_UNIX
Shell command for scheduling periodic jobs
originates from Chronos, the Greek word for time. cron is generally available on Unix-like operating systems. The actions of cron are driven by a crontab (cron
Cron
Shell command for reporting available file system space
disk-based storage was the ubiquitous mass storage technology. The Single Unix Specification (SUS) specifies that space is reported in blocks of 512 bytes
Df_(Unix)
Shell command for finding files
directory. The command is available on most Unix-like systems. The command first appeared in Version 5 Unix as part of the Programmer's Workbench project
Find_(Unix)
Unix operating system
UnixWare is a Unix operating system. It was originally released by Univel, a jointly owned venture of AT&T's Unix System Laboratories (USL) and Novell
UnixWare
Each version of the UNIX Time-Sharing System evolved from the version before, with version one evolving from the prototypal Unix. Not all variants and
List_of_Unix_systems
Command to print the file name of the terminal connected to standard input
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
Tty_(Unix)
Unix command utility
wc (short for word count) is a command in Unix, Plan 9, Inferno, and operating systems that are Unix-like. The program reads either standard input or a
Wc_(Unix)
User-definable variable associated with each running process in many operating systems
were introduced in their modern form in 1979 with Version 7 Unix, so are included in all Unix operating system flavors and variants from that point onward
Environment_variable
Special user account used for system administration
superuser. In others, the name of the account is not the determining factor; on Unix-like systems, for example, the user with a user identifier (UID) of zero
Superuser
Shell command for formatting and outputting text; like printf() library function
text like the same-named C function. It is available in a variety of Unix and Unix-like systems. Some shells implement the command as builtin and some
Printf_(Unix)
American computer scientist known for Unix (1941–2011)
scientist. He created, together with long-time colleague Ken Thompson, the Unix operating system, C programming language, and B programming language. Dennis
Dennis_Ritchie
Unix command to print a random message
database of quotations. Early versions of the program appeared in Version 7 Unix in 1979. The most common version on modern systems is the BSD fortune, originally
Fortune_(Unix)
File format and file archiver program
yet tar continues to have widespread use. The command was introduced to Unix in January 1979, replacing the tp program (which in turn replaced "tap")
Tar_(computing)
Capsicum is an implementation of capability-based security for UNIX and similar systems. Presented at USENIX Security Symposium 2010, the system is part
Capsicum_(Unix)
Computer operating system kernel
XNU ("X is Not Unix") is the computer operating system (OS) kernel developed at Apple Inc. since December 1996 for use in the Mac OS X (now macOS) operating
XNU
Unix operating system port for DEC VAX architecture
UNIX/32V is an early version of the Unix operating system from Bell Laboratories, released in June 1979. 32V was a direct port of the Seventh Edition Unix
UNIX/32V
General-purpose programming language
purpose was to construct utilities running on Unix, and was later applied to re-implementing the kernel of the Unix operating system. During the 1980s, C gradually
C_(programming_language)
v4 UNIX Time-Sharing System v5 UNIX Time-Sharing System v6 MINI-UNIX PWB/UNIX USG CB Unix UNIX Time-Sharing System v7 (It is from Version 7 Unix (and
List_of_operating_systems
Discontinued UNIX variant
Bell Labs in 1982. UNIX System III was a mix of various AT&T Unix systems: Version 7 Unix, PWB/UNIX 2.0, CB UNIX 3.0, UNIX/RT and UNIX/32V. System III supported
UNIX_System_III
Command for applying changes to text files
programming language) and posted to mod.sources (which later became comp.sources.unix) in May 1985. patch was added to XPG4, which later became POSIX. Wall's code
Patch_(Unix)
Obsolete encryption program
In Unix computing, crypt or enigma is a utility program used for encryption. Due to the ease of breaking it, it is considered to be obsolete. The program
Crypt_(Unix)
Discontinued software produced by Microsoft which provided Unix environment on Windows NT
Windows Services for UNIX (SFU) is a discontinued software package produced by Microsoft which provided a Unix environment on Windows NT and some of its
Windows_Services_for_UNIX
Command-line utility
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
Test_(Unix)
6th Edition of Research Unix alias UNIX Time-Sharing System
Edition Unix, also called Version 6 Unix or just V6 is a version of the Unix operating system first released in May 1975 and the first version of the Unix operating
Version_6_Unix
Linux standard for directory structure
used for the layout of Unix-like systems. It has been made popular by its use in Linux distributions, but it is used by other Unix-like systems as well
Filesystem_Hierarchy_Standard
Unix archiver command
of Unix and was used through Version 6 Unix. Version 7 Unix had a modified version of that format, which was also used in UNIX System III and in UNIX System
Ar_(Unix)
1980–2014 American multinational software and services company
attempted to compete directly with Microsoft by acquiring Digital Research, Unix System Laboratories, WordPerfect, and the Quattro Pro division of Borland
Novell
First or top-most directory in a hierarchy
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
Root_directory
Family of IEEE standards for compatibility between operating systems
standard – including branded Unix systems, Unix-like systems, and many systems that were historically unrelated to Unix. The standardized user command
POSIX
System call
processing methods". nginx.org. poll – System Interfaces Reference, The Single UNIX Specification, Version 5 from The Open Group man-pages for poll(2) in FreeBSD
Poll_(Unix)
Computer operating system architecture
A Unix architecture is a computer operating system system architecture that embodies the Unix philosophy. It may adhere to standards such as the Single
Unix_architecture
Software interface based on commands formatted as lines of text
DEC's DIGITAL Command Language (DCL) in OpenVMS and RSX-11, the various Unix shells (sh, ksh, csh, tcsh, zsh, Bash, etc.), CP/M's CCP, DOS' COMMAND.COM
Command-line_interface
Unix shell command
read is a command found on Unix and Unix-like operating systems such as Linux. It reads a line of input from standard input or a file passed as an argument
Read_(Unix)
Operating system
Amiga Unix (informally known as Amix) is a discontinued full port of AT&T Unix System V Release 4 operating system developed by Commodore-Amiga, Inc. in
Amiga_Unix
Operating system
HP-UX (from "Hewlett Packard Unix") is a discontinued proprietary implementation of the Unix operating system developed by Hewlett Packard Enterprise
HP-UX
Device file that discards all data written to it
that the write operation succeeded. This device is called /dev/null on Unix and Unix-like systems, NUL: (see TOPS-20) or NUL on CP/M and DOS (internally
Null_device
Standard file format for executables, object code, shared libraries, and core dumps
accepted among different vendors of Unix systems. In 1999, it was chosen as the standard binary file format for Unix and Unix-like systems on x86 processors
Executable and Linkable Format
Executable_and_Linkable_Format
1990 book by W. Richard Stevens
Unix Network Programming is a book written by W. Richard Stevens. It was published in 1990 by Prentice Hall and covers many topics regarding UNIX networking
UNIX_Network_Programming
Unix security refers to the means of securing a Unix or Unix-like operating system. A core security feature in these systems is the file system permissions
Unix_security
Shell command for listing files
developed for Unix and later codified by POSIX and Single UNIX Specification, it is supported in many operating systems today, including Unix-like variants
Ls
American computer scientist known for Unix (born 1943)
Labs for most of his career where he designed and implemented the original Unix operating system. He also invented the B programming language, the direct
Ken_Thompson
Utility to find files on Unix systems
locate is a Unix utility which serves to find files on filesystems. It searches through a prebuilt database of files generated by the updatedb command
Locate_(Unix)
Computer operating system
A/UX is a Unix-based operating system from Apple Computer for Macintosh computers, integrated with System 7's graphical interface and application compatibility
A/UX
Unix command
is a Unix command used for making a file with long lines more readable on a limited width computer terminal by performing a line wrap. Most Unix terminals
Fold_(Unix)
Research distributed operating system
Science Research Center (CSRC) at Bell Labs in the mid-1980s, built on the UNIX concepts first developed there in the late 1960s. Since 2000, Plan 9 has
Plan_9_from_Bell_Labs
File format and file compression program
originally come from NetBSD, and support decompression of bzip2 and the Unix pack format. An alternative compression program achieving 3-8% better compression
Gzip
Shell command for moving files
For a rename, an item's timestamp is not modified. On Unix implementations derived from AT&T Unix, cp, ln and mv are implemented as a single program with
Mv_(Unix)
Shell command for deleting files
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
Rm_(Unix)
File types in Unix-based operating systems
The seven standard Unix file types are regular, directory, symbolic link, FIFO special, block special, character special, and socket as defined by POSIX
Unix_file_types
UNIX for IBM mainframes
z/OS UNIX System Services (z/OS UNIX, or informally USS) is a base element of z/OS. z/OS UNIX is a certified UNIX operating system implementation (XPG4
UNIX_System_Services
Word processor
running the Classic Mac OS (1985), AT&T UNIX PC (1985), Atari ST (1988), OS/2 (1989), Microsoft Windows (1989), SCO Unix (1990), Handheld PC (1996), Pocket
Microsoft_Word
Suite of computer programs and protocols
UUCP (Unix-to-Unix Copy) is a suite of computer programs and protocols allowing remote execution of commands and transfer of files, email and netnews between
UUCP
1980s Unix desktop computer
The AT&T UNIX PC is a Unix desktop computer originally developed by Convergent Technologies (later acquired by Unisys), and marketed by AT&T Information
AT&T_UNIX_PC
Computer environment variable
PATH is an environment variable on Unix-like operating systems, DOS, OS/2, and Microsoft Windows, specifying a set of directories where executable programs
PATH_(variable)
Unix text formatting utility
tr is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. It is an abbreviation of translate or transliterate, indicating its operation
Tr_(Unix)
Technology for controlling access to file system items
users and groups of users. One well-established technology was developed for Unix, later codified by POSIX and is used in Linux. Another common technology
File-system_permissions
Line-oriented text editor
letters, /ˌiːˈdiː/) is a line editor. It was one of the first features of the Unix operating system. Although not commonly used today, it remains part of the
Ed_(text_editor)
Programming command in Unix
The Unix command fuser is used to show which processes are using a specified computer file, file system, or Unix socket. For example, to check process
Fuser_(Unix)
Symbol representing the word "and" (&)
character is in either "Text" or "Code" fields. Some Unix shells use the ampersand as a metacharacter: Some Unix shells, like the POSIX standard sh shell, use
Ampersand
Former software laboratory
Unix System Laboratories (USL), sometimes written UNIX System Laboratories to follow relevant trademark guidelines of the time, was an American software
Unix_System_Laboratories
File system used by many Unix and Unix-like operating systems
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
Unix_File_System
Shell command for creating a link file
die.net. Retrieved 7 August 2015. "The Single UNIX Specification, Version 4 - Overview". unix.org. unix.org. Archived from the original on 15 January
Ln_(Unix)
Unix spell checking utility
standard English language spell checker for Unix, Plan 9, and Unix-like operating systems. Appearing in Version 6 Unix, spell was originally written by Stephen
Spell_(Unix)
1994 book by Simson Garfinkel
The UNIX-HATERS Handbook is a semi-humorous edited compilation of messages to the UNIX-HATERS mailing list. The book was edited by Simson Garfinkel, Daniel
The_UNIX-HATERS_Handbook
American computer company, 1982–2010
significantly to the evolution of several key computing technologies, among them Unix, RISC processors, thin client computing, and virtualized computing. At its
Sun_Microsystems
UNIX
UNIX
UNIX
UNIX
Female
English
Variant spelling of Middle English Elfreda, ELFRIEDA means "elfin strength."
Girl/Female
African, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Tamil
Ambition
Girl/Female
Australian, Biblical, Christian
That Quavers or Totters; Motion
Boy/Male
Hindu, Indian, Marathi
Having the Sun for the Banner
Girl/Female
Hindu, Indian
Greenery
Girl/Female
Tamil
Good earth
Boy/Male
Tamil
Dhyaneshwar | தà¯à®¯à®¾à®¨à¯‡à®·à¯à®µà®°
Lord of meditation
Surname or Lastname
English
English : patronymic from the personal name Timm.
Boy/Male
Bengali, Indian
Nice; Good
Boy/Male
Tamil
Name of a God
UNIX
UNIX
UNIX
UNIX
UNIX