How to get and display the size of directories in Linux
Learn how to know the occupied space in the disk by directories and files.
How to compress a whole directory (including subdirectories) using TAR in Unix based OS with the CLI
Learn how to quickly compress an entire directory into a single tar file with the command line.

UNIX is a popular multi-user, multitasking OS developed at Bell Labs in the early 1970s. Created by just a handful of programmers, UNIX was designed to be a small, flexible system used exclusively by programmers.