$ grep -e 'grep' -e 'grep' -e 'grep' grepExample.txt GREP is a multi-purpose file search tool that uses Regular Expressions. Show line number while displaying the outputĢ:The grep command is used for searching the text from the file according to the regular expression.ģ:grep is a powerful file pattern searcher in Linux. Grep is a powerful file pattern searcher in Linux. Displaying the count of the number of matches Grep is a powerful file pattern searcher in Linux.Ģ. The grep command is used for searching the text from the file according to the regular expression. o : Print only the matched parts of a matching line.Įxample: Consider the below file as an input: E: Treats pattern as an extended regular expression (ERE). e exp: Specifies expression with this option. v: Prints all the lines that do not match the pattern. n: Display the matched lines with line numbers.

h: Display the matched lines, but do not display the filenames. c: Count the number of lines that match a pattern. grep is a powerful file pattern searcher in Linux. Grep is considered to be one of the most useful commands on Linux and Unix-like operating systems. By default, grep displays the matching lines. The grep stands for “global regular expression print,” processes text line by line, and prints any lines which match a specified pattern. Here are the some most important test procession tool that we will discuss in this blog In this blog, we are going to learn some most important text processing tools. Linux shell has a number of useful tools that help us do various text processing tasks. In our everyday work, we need to search text, extract parts of the text, modify the text, and sort text. Play with text in Linux: Linux is a widely-used open-source operating system that provides a large number of text processing tools.

Grep line number