Book Image

Learn Linux Quickly

By : Ahmed AlKabary
Book Image

Learn Linux Quickly

By: Ahmed AlKabary

Overview of this book

Linux is one of the most sought-after skills in the IT industry, with jobs involving Linux being increasingly in demand. Linux is by far the most popular operating system deployed in both public and private clouds; it is the processing power behind the majority of IoT and embedded devices. Do you use a mobile device that runs on Android? Even Android is a Linux distribution. This Linux book is a practical guide that lets you explore the power of the Linux command-line interface. Starting with the history of Linux, you'll quickly progress to the Linux filesystem hierarchy and learn a variety of basic Linux commands. You'll then understand how to make use of the extensive Linux documentation and help tools. The book shows you how to manage users and groups and takes you through the process of installing and managing software on Linux systems. As you advance, you'll discover how you can interact with Linux processes and troubleshoot network problems before learning the art of writing bash scripts and automating administrative tasks with Cron jobs. In addition to this, you'll get to create your own Linux commands and analyze various disk management techniques. By the end of this book, you'll have gained the Linux skills required to become an efficient Linux system administrator and be able to manage and work productively on Linux systems.
Table of Contents (24 chapters)

Compressing with gzip

Grouping files in an archive doesn't save disk space on its own. We would need to compress an archive to save disk space. Numerous compression methods are available for us to use on Linux. However, we are only going to cover the three most popular compression methods.

The most popular compression method on Linux is arguably gzip, and the upside is that it's really fast. You can compress an archive file with gzip by using the -z option with the tar command as follows:

tar -czf compressed_archive archive_name

So to compress the scripts.tar archive into a gzip-compressed archive named scripts.tar.gz, you first need to change to the /root/backup directory and then run the following command:

root@ubuntu-linux:~/backup# tar -czf scripts.tar.gz scripts.tar

Now if you list the contents of the backup directory, you will see the newly created gzip-compressed archive scripts.tar.gz:

root@ubuntu-linux:~/backup# ls 
scripts.tar scripts.tar.gz

The magic happened by using...