Linux Command Line (37) Intro to RegEx pt1
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Regular Expressions are also referred to as RegEx. A regular Expression is a string of text, that allows us to create patterns that help match, locate, and manage text. Regular Expressions are used in many programming languages and text editors sometimes having slight differences.
The period is a wildcard any single character. Adding the escape character (a backslash) before a period can make the period work as a period, and not a wildcard.
The caret symbol means the line of text will start with the character (or characters) following the caret symbol.
Brackets around a group of characters work as an or for a group of characters.
A caret inside the brackets, means NOT any of the characters inside the brackets.
A dollar sign (to the right of the text) means the line must end with the characters to the left of the dollar sign.
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