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grep, Global Regular Expression Print, will search input files for a search string, and print the lines that match it.

Beginning at the first line in the file, grep copies a line into a buffer, compares it against the search string, and if the comparison passes, prints the line to the screen.

Grep will repeat this process until the file runs out of lines.

NOTE: Nowhere in this process does grep store lines, change lines, or search only a part of a line.

Basic usage

Regex usage

grep/grep.txt · Last modified: 2020/08/22 12:03 by

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