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Phase 1: Linux and networking essentials

The reason we pair these two topics is because lots of networking tasks are done via command line and Linux management is all about command line.

Resources

Order Title Notes
1 Linux Basics for Hackers This book made learning Linux FUN! It's pretty easy to follow and take a chapter day by day.
1 The Linux Command Line I used this more as a reference to reinforce topics from the first book.
2 Introduction to Networking Great YouTube playlist of basic networking concepts.
2 Introduction to Bash scripting Fantastic intro to bash scripting, Joe Collins voice is soothing!
Optional Computer Networking Course - Network Engineering This full college-level computer networking course will prepare you to configure, manage, and troubleshoot computer networks.

Once you have gone through this content, I think you would have a solid basic level of Linux and networking knowledge, no you're not a professional, but you shouldn't feel lost or clueless. The two books I mentioned have several projects, DO THEM! Do not just read the theory! If there is a concept you don't understand, look it up, don't limit yourself to the resources I am sharing here.

Projects

Title Resource
Install Linux on a computer Research a distro and install it (I really like Pop!_OS)
Setup a LAMP server A pretty popular Linux admin task.
Deploy a NAS server Checkout FreeNAS
Deploy your own cloud Checkout NextCloud

Things you should be able familiar with at the end of this phase

  • Navigate with the cd command.
  • Understand how to list the contents of a directory and using the ls command.
  • Create, copy, move, rename, directories and files with mkdir, cp, rm, and touch commands.
  • Find things with locate, whereis, which, and find commands.
  • Understand how to work with links with the ln command.
  • Understand how to learn more about commands with the which, man, and --help commands.
  • Familiar with finding logs details in /var/log
  • How to display the contents of a file with cat, less, more, tail, head.
  • Filtering with grep and sed.
  • Redirection of standard input, output and error with > operator and tee command.
  • How to use pipelines with the | operator.
  • Manipulate files with nano or vim.
  • Install and uninstall packages. Depends on distro, debian based use apt.
  • Analyze networks with ifconfig, iwconfig.
  • Control permissions with chown, chgrp, chmod commands.
  • Creating users and the sudo command.
  • Process management with ps, top, nice, kill
  • Manage environment aud user defined variables with env, set, export commands.
  • Add directories to your PATH.
  • Compression and archiving with tar, gzip, gunzip.
  • Filesystem device management with fdisk, lsblk, mount, unmount, df,fsck.
  • How to access a Linux server with ssh.
  • How to write a simple bash script.
  • Understand IP Addressing and what are subnets, subnet masks, DHCP, and DNS.
  • Understand what are gateways, route tables, load balancing and VPNs.

Certifications you might want to look into

There are several Linux certifications and you can chose to study for any of them really, but a lot of them cover WAY more than what you need to know for a solid foundation and are more focused on Linux administration, for example the Red Hat, Linux Foundation, Oracle, and LPIC, and Comptia Linux+ certifications.

There are also TONS of networking certifications out there, and similar to the Linux one, they are more focused on giving you a lot of knowledge so you can become a networking engineer/specialist, again at an introductory level, it's a little overkill. If you did want to get one, take a look at the Cisco certifications which are pretty much industry standard and/or Comptia Network+

At the end of the day, if you want to take them, go for it :)

What's next

Go to Phase 2: Programming