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grep    
n. 文本查找工具

文本查找工具

A {Unix} command for
searching files for lines matching a given {regular
expression} (RE). Named after the {qed}/{ed} editor
subcommand "g/re/p", where re stands for a regular expression,
to Globally search for the Regular Expression and Print the
lines containing matches to it. There are two other variants,
fgrep which searches only for fixed strings and {egrep} which
accepts extended REs but is usually the fastest of the three.

Used by extension to mean "to look for something by pattern".
When browsing through a large set of files, one may speak of
"grepping around". "Grep the bulletin board for the system
backup schedule, would you?" See also {vgrep}.

[{Jargon File}]

Global Regular Expression Print (Unix)


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  • grep (1) - Linux manual page - man7. org
    If TYPE is without-match, when grep discovers null input binary data it assumes that the rest of the file does not match; this is equivalent to the -I option If TYPE is text, grep processes a binary file as if it were text; this is equivalent to the -a option
  • grep command in Unix Linux - GeeksforGeeks
    The grep command is one of the most useful tools in Linux and Unix systems It is used to search for specific words, phrases, or patterns inside text files, and shows the matching lines on your screen
  • grep Cheat Sheet - Command in Line
    Typically, PATTERNS should be quoted when grep is used in a shell command Basic Syntax: grep [OPTION ] PATTERNS [FILE ] Common Options: -i, --ignore-case: Ignore case distinctions in patterns and input data -v, --invert-match: Invert the sense of matching, to select non-matching lines
  • Grep Command in Linux with Examples | Linuxize
    By default, grep is case-sensitive, meaning uppercase and lowercase characters are treated as distinct To ignore case when searching, use the -i option (or --ignore-case) For example, searching for “Zebra” without -i will not match lowercase entries: No output is produced because there are no lines matching the exact case
  • grep - Wikipedia
    grep is a command-line utility for searching text for lines that match a regular expression
  • How to use grep command In Linux UNIX with examples
    The grep utilities are a family that includes grep, grep -E (formally egrep), and grep -F (formally fgrep) for searching files For most use cases, fgrep is sufficient due to speed and only looking into strings and words
  • Code Search | Grep by Vercel
    Effortlessly search for code, files, and paths across a million GitHub repositories
  • Mastering `grep` in Linux: A Comprehensive Guide - linuxvox. com
    In the vast landscape of Linux command-line tools, grep stands out as a powerful and versatile utility Short for Global Regular Expression Print, grep is used to search for specific patterns in text files or input streams
  • Grep - GNU Project - Free Software Foundation
    Grep searches one or more input files for lines containing a match to a specified pattern By default, Grep outputs the matching lines Stable source releases are available on the main GNU download server (HTTPS, HTTP, FTP) and its mirrors; please use a mirror if possible
  • grep Command in Linux - Online Tutorials Library
    With the grep command, it is also possible to quickly perform a case-insensitive search by using the -i option This is useful in case you want to ignore case differences in your search pattern





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