We can use the cut, paste, join commands provided by linux to retrieve, duplicate, or merge text file contents.

We can use the uniq, comm command provided by linux to deduplicate, or compare text file contents.

We can use the wc, sort command provided by Linux to count the number of words, the number of bytes, and the sort of letters and numbers.

With word processing commands, we can easily get the text we want from a text output or text document.

With the matching patterns, we can easily and efficiently find the files or directories we need.

With the pipe notation, we can pass the output of one program to the current as its initial data.

With the IO redirection feature, we can easily manipulate the input and output of files or other information.