GNU Grep Find text within files, with a multitude of options
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GNU Grep Tags

searcher find Finder String Searcher find text String Finder find options multitude

GNU Grep Description

The GNU Grep application was designed to be a program which can be used for finding text within files, with a multitude of options. Grep searches the input files for lines containing a match to a given pattern list. When it finds a match in a line, it copies the line to standard output (by default), or does whatever other sort of output you have requested with options. Though Grep expects to do the matching on text, it has no limits on input line length other than available memory, and it can match arbitrary characters within a line. If the final byte of an input file is not a newline, grep silently supplies one. Since newline is also a separator for the list of patterns, there is no way to match newline characters in a text.

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