Learn the fundamentals of sorting and de-duplicating text on the command line. If you've been using the command line for a long time, it's easy to take the commands you use every day for granted. But, ...

Linux provides a lot of handy commands for manipulating text files. This post explains how to use a collection of them. Whenever you need to work with lists that are stored as text files on Linux – ...

The first command we’ll examine in this post is a very unusual awk command that systematically removes every line in the file that is encountered more than once. It leaves the first instance of the ...