In this tutorial, you will learn how to use the grep command in Linux, Unix and OSX, with examples of common use cases. Learn how to use the grep command in Linux to find words or patterns in files, with several examples provided to help maximize your grep searches.
In this tutorial, you will learn how to use the grep command in Linux, Unix and OSX, with examples of common use cases.
The grep command in Linux is a utility used to search any given input files for one or more matching words or patterns. It is used to search a single file or an entire directory, including child directories, for a matching string.
To find a word inside of a single file we specify the word we want matched and file to search. For example, to find the word hello in a file named file.txt we would run the following command.
grep "hello" file.txt
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