For many developers the answer is a regular expression, a little bit of code that can describe text patterns using wildcards and other special characters. If you're new to the topic, we have a ...

A regex construct, specified as a backslash character () followed by a digit character denoting a capturing group number, that recalls a capturing group’s captured text characters.

corn$" file.txt you will get only the first line, because it is the only one that begins with chickens and ends with corn. This example might look confusing, but there are three regular expressions ...