File counting in a directory is a common task that many users might need to perform. It could be for administrative purposes, understanding disk usage, or organizing files in a systematic manner.

Linux offers more than one way to find what you're looking for, including commands like locate, find, and whereis. Knowing when and which command to use can save you time and frustration.

The Linux comm command makes it easy to compare a couple text files and determine if they both contain the same lines -- whether the file contents are sorted or not.