But grep isn’t the only program that uses regular expressions. Awk, sed, Perl, editors like VIM and emacs, and many other programs can use regular expressions for pattern matching.

GREP stands for Global Regular Expression Print. The grep filter searches a file for a particular pattern of characters, and displays all lines that contain that pattern. The pattern that is searched ...

This regex attempts to exclude IPs starting with 10., 192.168., and 172.16. through 172.31. by using a negative lookahead. Uisng grep and Regex to extract IPS For scenarios where this regex doesn't ...

The everlastingly useful grep command can change its character with the flip of a switch to help you find things. Topics Spotlight: New Thinking about Cloud Computing ...

If you have used the Linux command line before, you've no doubt used "grep" to search for strings of text. There's a better way to do ... be a replacement for the venerable old Grep, which has been ...

Every Linux system comes with a dictionary file: a huge list of words in your language. This "words" file is useful for spell-checking, but you can put it to use in many different ways. Learn more ...

Searching source code is one of the most common activities of software engineers. Text editors and other support tools normally provide searching based on lexical expressions (regular expressions).

Even grep has some uncommon regular expression elements, so I’m only going to work with a subset of patterns, ... Linux Fu: Use The Source (Command), Luke. Linux Fu: USB Everywhere.