Linux Administration for Beginners - Learn Basics of UNIX

Download the Windows hosts package, install Oracle VM VirtualBox on Windows using the defaults, and finish the setup. Open VirtualBox from desktop or start menu to launch the virtual machine.

Install VirtualBox on macOS by downloading from virtualbox.org, installing with your password, and launching via Spotlight to verify the Mac virtualization setup.

Download CentOS version eight from centos.org by choosing a nearby mirror to download the ISO image, then save the downloaded file to your desktop.

Download putty from putty.org, retrieve your server's IP address, and access the server with multiple putty sessions compared to a single console session.

Learn how to customize Putty for Unix server access by setting a white background and black font, saving the server IP as a reusable session, and verifying uptime.

Learn the unix filesystem structure, from the root directory to key folders like /home, /etc, /boot, /usr, and /opt, and how binaries, configs, devices, and logs reside there.

Learn to create and edit Linux files with the vi editor, enter insert mode, escape to exit, save with :wq, quit with :q!, and view content with cat or more.

Explore UNIX file permissions by owner, group, and all users, and master read, write, and execute permissions, including how to adjust them with chmod.

Create a new user with useradd, set a password with passwd, log in as the user, then delete the user with userdel -r and verify removal.

Learn to create, modify, and delete groups in Linux by adding a baseball group, moving a user with usermod, verifying with getent group and id, and deleting the group.

Explore how LVM converts a physical volume into a volume group and logical volumes, enabling scalable partitions and versatile mount points on a Linux system.

Learn to search, install, upgrade, update, and remove packages using the yum command, manage repositories, and verify installations on Linux systems.

Mount the dvd iso to the vm, access the /dvd directory, navigate to base os and packages, use rpm to install and remove packages, then unmount the dvd.

Assign multiple IP addresses to a single network adapter by creating virtual IPs, editing interface configuration, and verifying connectivity with ping and remote login.

Learn how to customize the server's message of the day by editing /etc/motd with vi, saving changes, and verifying the updated motd appears on new sessions.