u/Try_Hard_Education

Welcome to Day 7 of the 30-day RHCSA challenge!

Resetting a lost root password is one of the most commonly tested tasks on the RHCSA — and one every sysadmin needs to know. Today we'll interrupt the boot process, drop into an emergency shell, and reset the root password from scratch.

By the end you'll be able to regain access to a system even when you're locked out of root.

What you'll learn in this video:

Interrupting GRUB at boot to edit the kernel line

Adding rd.break to reach the emergency shell

Remounting the filesystem as read-write

Changing the root password with passwd

Handling the SELinux relabel with .autorelabel

Rebooting into your system with the new password

How this fits into your 30-day RHCSA study plan

About this series:

Over the next 30 days I'm covering everything you need to pass the RHCSA (EX200) — from setup to users, permissions, storage, networking, SELinux, containers, and more. New video every day. Subscribe and turn on notifications so you don't miss one.

#rhcsa #redhat #linux #redhatlinux #ex200 #linuxadministration #linuxcertification #offline #closedloop #sysadmin #linuxforbeginners #30daychallenge #learnlinux #itcertification #opensource #homelab #linuxtutorial #tech #techcareers #certificationprep #closedloop #airgap #shorts #shortvideo #password #passwordrecovery

Day 5/30: Create a User and Grant sudo Access via the Wheel Group (RHCSA Prep Series)

Welcome to Day 5 of the 30-day RHCSA challenge! User and group management is heavily tested on the RHCSA, so today we're creating a new user, setting their password, and giving them administrative privileges by adding them to the wheel group.

By the end you'll know how to create accounts and grant sudo access — a skill you'll use constantly on the exam and in the real world.

What you'll learn in this video:

Creating a user with useradd

Adding a user to wheel with usermod -aG wheel

Verifying group membership with id and groups

Setting a password with passwd

Testing sudo access as the new user

About this series:

Over the next 30 days I'm covering everything you need to pass the RHCSA (EX200) — from setup to users, permissions, storage, networking, SELinux, containers, and more. New video every day. Subscribe and turn on notifications so you don't miss one.

#rhcsa #redhat #linux #redhatlinux #ex200 #linuxadministration #linuxcertification #offline #closedloop #sysadmin #linuxforbeginners #30daychallenge #learnlinux #itcertification #opensource #homelab #linuxtutorial #tech #techcareers #certificationprep #closedloop #airgap

Day 4/30: Configure Your IP Address with nmcli & nmtui (RHCSA Prep Series)

Welcome to Day 4 of the 30-day RHCSA challenge!

Networking is a core RHCSA skill, so today we're setting a static IP address two different ways: with nmcli on the command line and with the nmtui text interface. Both are must-know tools for the exam.

By the end you'll be able to configure network connections confidently, whether you prefer the CLI or a menu-driven interface.

About this series:

Over the next 30 days I'm covering everything you need to pass the RHCSA (EX200) — from setup to users, permissions, storage, networking, SELinux, containers, and more. New video every day. Subscribe and turn on notifications so you don't miss one.

#rhcsa #redhat #linux #redhatlinux #ex200 #linuxadministration #linuxcertification #offline #closedloop #sysadmin #linuxforbeginners #30daychallenge #learnlinux #itcertification #opensource #homelab #linuxtutorial #tech #techcareers #certificationprep #closedloop #airgap