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Grep: History, Implementations & Usage as a verb

grep is a command-line utility for searching text for lines that match a regular expression. Its name comes from the ed command g/re/p (global, regular expression, print), which has the same effect. grep was originally developed for the Unix operating system, and is commonly available on Unix-like and some other systems such as OS-9. The shell command…

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Grep topic overview

The analysis highlights History, Implementations and Usage as a verb as prominent areas in the source structure around Grep.

Related topics
44
Source areas
4
Connected nodes
48
Extracted relationships
64
Concept neighborhoods
19
Bridge connections
48

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Implementations · 23 topics
Overview · 10 topics
History · 9 topics
Usage as a verb · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Developer
AT&T Bell Laboratories
Operating system
Unix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i
Original author
Ken Thompson
Release
November 1973; 52 years ago (1973-11)
Type
Command
Written in
C

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Implementations

Usage as a verb

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Grep connects Entity context

The extracted context around Grep shows recurring relationship patterns in the source. For example, Grep → Before, Doug McIlroy, He, Ken Thompson, Lee, McIlroy, McMahon, PDP-11, Responding, Stating, The, The Federalist Papers, Thompson, Thompson's, Unix, Version Another extracted example is Grep → Aho, Alfred Aho, Binaries, Commandsegrepandfgrep, Corasick, Early, Ken Thompson's, Other, POSIX, Theegrepvariant, Thefgrepvariant, Thepgreputility, Unix, Version. Use these groups to spot repeated connection types before inspecting the individual relationships.

Grep

Top relations

related to history · 16
Grep → Before, Doug McIlroy, He, Ken Thompson, Lee, McIlroy, McMahon, PDP-11, Responding, Stating, The, The Federalist Papers, Thompson, Thompson's, Unix, Version
related to Implementations · 14
Grep → Aho, Alfred Aho, Binaries, Commandsegrepandfgrep, Corasick, Early, Ken Thompson's, Other, POSIX, Theegrepvariant, Thefgrepvariant, Thepgreputility, Unix, Version
related to External links · 8
Grep → Command Grep, GNU, GNU Grep, Inferno General, Manual, Plan, Programmer's Manual, Volume
related to agrep · 7
Grep → It, MS-DOS, OS/2, Sun Wu, Udi Manber, Unix, Windows
see also · 6
Grep → DOS/Windows, Free, Moore, POSIX, Unix, Windows
related to Usage as a verb · 3
Grep → In December, Oxford English Dictionary Online, You
Developer · 1
Grep → AT&T Bell Laboratories
Operating system · 1
Grep → Unix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i
Original author · 1
Grep → Ken Thompson
Release · 1
Grep → November 1973; 52 years ago (1973-11)

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

unix regular expression command search also thompson text version utility operating agrep windows systems name system ed unix-like os-9 program

Grep relationships Subject–Predicate–Object triples

TTTA extracted 64 structured relationships around Grep. Examples in this analysis include Grep → Developer → AT&T Bell Laboratories and Grep → Operating system → Unix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
GrepDeveloperAT&T Bell Laboratories1.00infobox
GrepOperating systemUnix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i1.00infobox
GrepOriginal authorKen Thompson1.00infobox
GrepReleaseNovember 1973; 52 years ago (1973-11)1.00infobox
GrepTypeCommand1.00infobox
GrepWritten inC1.00infobox
Grepis acommand-line utility for searching text for lines that match a regular expression0.90text
OS-9instance ofand is commonly available on Unix-like and some other systems0.80text
grepinstance ofusing tools0.80text
than one could with a hard copyinstance ofusing tools0.80text
Greprelated to agrepUdi Manber0.60section
Greprelated to agrepSun Wu0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around Grep bring nearby vocabulary together. In this analysis, examples include Command, Unix and Expression. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Grep
    • Command
    • Unix
    • Expression
    • Regular
    • Software
    • Tools
    • Version
    • Search
    • Name
    • Verb
    • Agrep
    • Operating
  • grep
    • Command
    • Unix
    • Expression
    • Regular
    • Software
    • Tools
    • Version
    • Search
    • Name
    • Verb
    • Agrep
    • Operating
  • regular expression
    • Regular
    • Ed
    • Match
    • Grep
    • Implementation
    • Name
    • Would
    • Text
    • Search
    • Unix
    • Ken
    • Os-9
  • unix
    • Agrep
    • Software
    • Version
    • Inferno
    • Unix-like
    • Files
    • Command
    • Search
    • Ken
    • Msx-dos
    • Written
    • Example
  • command
    • Inferno
    • Msx-dos
    • Grep
    • Files
    • Verb
    • Agrep
    • Utility
    • Also
    • Search
    • Unix
    • Ken
    • Os-9
  • version 4 unix
    • Agrep
    • Software
    • Version
    • Inferno
    • Unix-like
    • Files
    • Command
    • Search
    • Ken
    • Msx-dos
    • Would
    • Written
  • version 7 unix
    • Agrep
    • Software
    • Version
    • Inferno
    • Unix-like
    • Files
    • Command
    • Search
    • Ken
    • Msx-dos
    • Would
    • Written
  • ken thompson
    • Files
    • Inferno
    • Msx-dos
    • Os-9
    • Search
    • Unix-like
    • Would
    • Written
    • Program
    • Utility
    • Added
    • Implementation

Connections between topic areas Semantic bridges

For Grep, one of the stronger structural bridges in this analysis connects Grep with Implementations. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
GrepImplementations · splits 25 ⟂ 24
GrepOverview · splits 38 ⟂ 11
GrepHistory · splits 39 ⟂ 10
GrepUsage as a verb · splits 46 ⟂ 3

Map overview Semantic statistics

Grep

Nodes49
Edges48
Triples64
Avg. degree1.96
Density0.040816
Components1

Source & methodology

TTTA analyzes the structure around Grep to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Implementations & Usage as a verb, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Grep · EN edition · Analysis: TopicsToTalkAbout

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