Grep command in linux how to#

In the output, you will be able to see all the lines that have the word Linux in them, just keep a note that no consideration will be given to the casing due to the -i flag. This means that the search term is case insensitive. This command basically means that grep will need to find the word Linux in the file named sampleTextFile.txt. FILE - It specifies one or more files in which the pattern will be searched.Ī simple instance of the grep command in action would be:.PATTERNS - The text pattern or the regular expressions that need to be searched.OPTIONS - Defines the way the grep will behave while searching for a text or string.Now to use the grep command, the first thing you need to do is to understand the grep syntax, which is as follows: As you might already have an idea that for using this command, you need to open the terminal on your system. It’s quite easy to make use of the grep command in your Linux- or UNIX-based system.

Grep command in linux how to#

How to Use GREP Command in UNIX/Linux Terminals

You can also find empty folders and blank files quite easily in your Linux-based system.

If you are a developer, the grep command can give you an upper hand while debugging the code.

It is possible to locate and identify the files faster that contains the text (string) that you want to search.

Primary Benefits of Using the grep Commandīefore moving forward to observe some examples that demonstrate how the grep command in Unix works in practice, take a look at some of the benefits of using it:

Prints the matching line or lines as a terminal output.

Additionally, if you are a developer, you should know the grep usages and their scope.

The grep Linux is among the most common, easy-to-use, and powerful commands that you should know if you are a Linux/Unix system user. This command allows you to search and match text (strings) in a file. What is the grep meaning? The GREP stands for Global Expression Regular Print, which is used in Linux/Unix terminals as grep. What is the grep Command and what it can do for you? If you wish to develop using Linux then you should definitely know about it. To cut the chase, the Linux grep command is a very important command that is basic yet powerful. There are several commands that it supports, among which some are essential. Linux is a develop(ment)er-friendly operating system. Primary Benefits of Using the grep Command List of content you will read in this article: