Grep, which stands for "global regular expression print," is a powerful tool for matching a regular expression against text in a file, multiple files, or a stream of input. It searches for the PATTERN of...

grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Its name comes from the ed command g/re/p (globally search a regular expression and print)...

grep searches for PATTERNS in each FILE. PATTERNS is one or patterns. grep -E and grep -F, respectively. These variants are deprecated, but are provided for backward compatibility.

grep prints lines that contain a match for one or more patterns. This manual is for version 3.3 of GNU Grep. grep comes with a rich set of options: some from POSIX and some being GNU extensions.

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Portability note: unlike GNU grep, traditional grep did not conform to POSIX.2 Print the version number of grep to standard error. This version number should be included in all bug reports (see...

I was requested to make a shell script to check for simple mistakes in files. I wanted to find, for each line if (regex:) "[ ]\t" ever happens. The problem is that grep is ignoring the \ and is taking "t" as a literal.

grep is a command line utility originally written for use with the Unix operating system. The default behaviour of grep takes a regular expression on the command line, reads standard input or a list of files, and outputs the lines containing matches for the regular expression.

Grep is a command-line utility that can search and filter text using a common regular expression It is so ubiquitous that the verb "to grep" has emerged as a synonym for "to search." grep is a useful tool...

The grep command searches for the pattern specified by the Pattern parameter and writes each matching line to standard output. The grep command uses a compact non-deterministic algorithm.

Tutorial using grep, a UNIX and Linux command to print lines matching a pattern. Examples of finding text in a file, printing line numbers, counting the number of matches, searching recursively and...

Grep is a command-line tool that allows you to find a string in a file or stream. It can be used with a regular expression to be more flexible at finding strings. This page gives an introduction to grep.