Regular Expressions (Regex)
Explore the fundamentals of regular expressions in Bash to enhance your ability to filter and search text. Understand key regex operators and how they apply with commands such as grep and egrep to process text data effectively.
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We'll cover the following...
Regular expressions are a powerful way to filter out specific pieces of information by using various arithematic patterns to describe certain set of strings.
You are probably now familiar with the wildcards e.g. *.txt to find all text files in some directory. Its regex would be something like this: ^.*\.txt$..
Some very important bash commands like grep and egrep use regex to search for different patterns of texts in inputs and files. ...