If you stick to the concepts that I cover later, they will work across most flavors and Linux utilities. You don't need to think too hard about it. PCRE (Perl Compatible Regular Expressions) is the ...

In this lesson, you’ll learn how to use RegEx (regular expressions) to work with sets of characters. Unlike the ., which matches any single character , sets enable you to match specific ...

Regular expressions can be difficult to read at a glance, as every character in a regex potentially has a special significance. This is why regex has a bad reputation for being a “write-once ...

The first three lines will match, but if you're thinking in globs, that doesn't make sense. Since grep uses regular expressions (regex) when searching files, the asterisk means "zero or more ...

But sometimes character count really will matter especially when you have longer regular expressions. Regex filter limits for GSC is 4,096 characters , according to Google Search Advocate Daniel ...

There are two types of people in the world: those who have no idea what a regular expression is, and those who not only know what they are but can compose them on the fly and tend to use them in si… ...

Since an e-mail address in itself can be something simple or long and complex, I am going to show a simple RegEx that I use most of the time to locate addresses within a text file.