![]() ![]() $ grep -E "ismail|ali" *.txt Match In Multiple FilesĪs we can see matched files also printed with the matched text. We have also the ability to search and match in multiple files. In this article, we’re going to show you how to exclude one or multiple words, patterns, or directories when searching with grep. We will use \.+)" data.txt Match IP Address or Domain Name Match In Multiple Files Posted 3 min read grep is a powerful command-line tool that is used to search one or more input files for lines that match a regular expression and writes each matching line to standard output. This may be a regular operation while searching in log files. To search multiple files with the grep command, insert the filenames you want to search, separated with a space character. Now we will look useful example which provides IP address or domain names. $ grep -E "is.ail|al." data.txt Match Multiple Pattern or Regex Match IP Address or Domain Name We can specify standard regular expression with the same way. Now we want to use multiple regular expression or pattern in our match term. Overview When we work in the Linux command line, we often use the grep command to search text. $ grep -E "ismail|ali" data.txt Match Multiple Strings Match Multiple Pattern or Regex The matching strings will be ismail and ali . In this example we will use a file named data.txt as a text. We will match given multiple strings inside a given text. E means extended grep which will enable extended regular expression features to use. We can use grep command with -E option or egrep command which is the alias of the grep -E . How To Use Regular Expression – Regex In Bash Linux? Grep -E or Egrepīefore starting examples we look different commands which provides same functionality. If you need more general tutorial about regex please look following article. In this tutorial we will look different examples about these features. One of the most used feature is to match two or more, multiple string, patterns or regex. Here are the following examples mention below Example #1 i => it will ignores case for matching Examples of GREP Command in Linux o => Print only the matched parts of a matching line with each such part on a separate output line.Ĭ => it prints only a count of the lines that match a pattern E => Treats pattern as an extended regular expression.Grep provides a lot of features to match strings, patterns or regex in a given text. Output: It will show a file or directory of the name hello.Įxplanation: in this case, look for a world with file name, hello, and then it will return every line where there’s a match every line where it finds this pattern or this word in this file. So, in this case, it found one line where there was a match and it returned hello world that’s the line. grep -inRsH 'Text to be searched' /path/to/dir (it can be. Example #2Įxplanation: We can search multiple files we can do let’s say grip, in this case, our string is just a number eight and we’ll search in two files file1 and file2 so we can just add as many filenames on here as we want and it’ll search for this string inside of each of these files. This grep command will give you a precise result when you are searching for specific text on Linux. Example #3Įxplanation: Now if we want to search every file in this current folder let’s see what we have here is five different files if we want to grep “is”. GROKKING GREP If you plan to develop shell scripts to expand the. ![]() ![]() nixCraft: Privacy First, Reader Supported nixCraft is a one-person operation. To search multiple patterns, use the following syntax. We can easily grep two words or string using the grep/egrep command on Linux and Unix-like systems. We can search every file in this folder and it returns each line in the word file it found this matches in a zip file it found. this is a long command line and shows that multiple commands may be strung out. What is the command to search multiple words in Linux The grep command supports regular expression pattern. Example #4Įxplanation: we can also ignore the case so let’s say we do grep line which will search for the word line in every file in our current folder it only found matches in the word file and it found these three matches those three lines so if we do a grep – it will ignore case so it runs the same search except now it’s going to ignore case so it finds a couple more matches look here we found an all upper case line and here it found a couple of lines where the line is capitalized so the – I is one of the most useful operators to add on to the grep function going to ignore case in your search. ![]()
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