Shulou(Shulou.com)06/01 Report--

This article mainly introduces the relevant knowledge of "how to use the Linux egrep command". The editor shows you the operation process through an actual case. The operation method is simple, fast and practical. I hope this article "how to use the Linux egrep command" can help you solve the problem.

Egrep looks for the specified string in the file

It is added that egrep is interpreted by extended regular expression grammar, while grep is interpreted by basic regular expression grammar, and the expression of extended regular expression is more standardized than basic regular expression.

Syntax egrep (option) (find mode) (filename 1, filename 2,...) The instance displays the qualified characters in the file. For example, to find all files in the current directory that contain the string "Linux", you can use the following command:

The egrep Linux * results are as follows:

# the following five behaviors testfile:hello Linux the line containing the Linux character in testfile! Testfile:Linux is a free Unix-type operating system. Testfile:This is a Linux testfile! Testfile:Linux testfile:Linux # the following two behaviors: line testfile1:helLinux with Linux character in testfile1! Testfile1:This a Linux testfile! # this is the end of the line testfile_2:Linux is a free unix-type opterating system testfile_2:Linux test, which contains Linux characters in the following two actions testfile_2, about "how to use the Linux egrep command". Thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.