#Search for text in files linux how to

You should see the following output: file1.txt:1:tecadmin is a popular linux blogįile2.txt:2:linux is made by linus torvalds.įile2.txt:3:linux is most popular operating system.įile3.txt:2:Ubuntu is a linux operating system You can use grep with -n option to print line numbers with matching patterns.įor example, to display line number that matches the pattern linux in the current directory, run the following command: grep -n linux * You should see the following output: file1.txt:2ĭisplay Line Number with Matching Pattern

You can use grep with -c option to display all files with the number of lines that matches the given string.įor example, to display all files with the number of lines that matches a string linux in the current directory, run the following command: grep -c linux *

You should see the following output: file1.txt You can display only filenames that contain a specific string using -l option.įor example, list all filenames in the current directory that matches the string tecadmin, run the following command: grep -l tecadmin * To List Filenames That Matches Specific Pattern This command will exclude all the lines that contain the string linux: file1.txt:i love tecadmin You can use grep command with -v option to print all lines that do not match a specific pattern of characters.įor example, print all lines that don’t contain the string linux in file1.txt and file2.txt, run the following command: grep -v linux file1.txt file2.txt This command will print all lines that contain a word linux in all files in the current directory and sub-directories: file1.txt:tecadmin is a popular linux blogįile3.txt:Ubuntu is a linux operating system

To search for a string linux in all files in the current directory and sub-directories, run the following command: grep -r linux *.

This command will print all lines that contain a word linux in file1.txt and file2.txt: file1.txt:tecadmin is a popular linux blogįile2.txt:Linux is an open-source operating system.įile2.txt:linux is made by linus torvalds.įile2.txt:linux is most popular operating system.

To search for a string linux in file file1.txt and file2.txt, run the following command: grep -i linux file1.txt file2.txt.

To Search a Specific String in Multiple File This command will print all lines that contain a word tecadmin case insensitively: tecadmin is a popular linux blog

To search for a string tecadmin case insensitively in the file file1.txt, run the following command: grep -i tecadmin file1.txt.

This command will print all lines that contain a whole word tecadmin: tecadmin is a popular linux blog

To search for an exact string tecadmin in the file file1.txt, run the following command: grep -w tecadmin file1.txt.

This command will print all lines that contain a word tecadmin: tecadmin is a popular linux blog

To search for a string tecadmin in the file file1.txt, run the following command: grep tecadmin file1.txt.

A system running the Linux operating system.

#Search for text in files linux how to

In this tutorial, we will show you how to use the Grep command with some practical examples.

Suggested Read: 12 Awesome Linux Find Command Examples.

So Grep command can be used to search some kind of text, word, pattern or sentence in a text file or a number of text files. Basically, Grep searches a text file for the specified regular expression and outputs any line containing a match to standard output. Grep is a powerful tool for searching a text, Grep means “Global regular expression print”.