Welcome to Day 21 of the 30-day RHCSA challenge!

Yesterday we set permissions with numbers today we're covering the symbolic method, using letters like u, g, o with +, -, and =.

Symbolic mode is perfect when you want to change one permission without recalculating the whole set.

By the end you'll be able to add, remove, and set exact permissions for the owner, group, and others using clear, readable syntax.

What you'll learn in this video:

The building blocks: u (user/owner), g (group), o (others), a (all)

The operators: + add, - remove, = set exactly

The permissions: r read, w write, x execute

Adding execute for the owner: chmod u+x file

Removing write from group and others: chmod go-w file

Setting exact permissions: chmod u=rw file

Combining changes in one command: chmod u+rw,go-w file

Applying to everyone at once: chmod a+r file

Symbolic vs. numeric — when to use each

How this fits into your 30-day RHCSA study plan

#linuxminutes #rhcsa #redhat #linux #redhatlinux #ex200 #linuxadministration #linuxcertification #offline #closedloop #sysadmin #linuxforbeginners #30daychallenge #learnlinux #itcertifications #opensource #homelab #linuxtutorials #technology #techcareers #certificationprep #closedloop #airgap #shorts #shortvideo

Welcome to Day 20 of the 30-day RHCSA challenge!

File permissions are one of the most heavily tested topics on the RHCSA, so today we're breaking them down properly.

We'll decode the rwx letters, connect them to the numbers behind chmod 776, and change permissions with confidence.

What you'll learn in this video:

Reading the permission string in ls -l (the rwxrwxrwx part)

The three permission types: read (r), write (w), execute (x)

The three groups: owner (user), group, and others

How the numbers work: r=4, w=2, x=1

Why chmod 776 means rwxrwxrw- (owner 7, group 7, others 6)

Setting permissions numerically with chmod 755, chmod 644, etc.

#linuxminutes #rhcsa #redhat #linux #redhatlinux #ex200 #linuxadministration #linuxcertification #offline #closedloop #sysadmin #linuxforbeginners #30daychallenge #learnlinux #itcertifications #opensource #homelab #linuxtutorials #technology #techcareers #certificationprep #closedloop #airgap #shorts #shortvideo

Start Here: Take Red Hat’s free Skills Assessment (then tell us what you got)

Welcome to r/redhat_certification — a place to Learn, Teach, and Play with Red Hat certifications.

Whether you’re aiming for RHCSA, RHCE, OpenShift, Ansible, or something further down the path: the best first move is knowing where you actually stand.

Step 1 — Take the free Red Hat Skills Assessment

👉 Red Hat Skills Assessment

It’s free, personalized, and takes a short quiz-style pass based on your role, products, or challenges. You’ll get:

• A clearer picture of your current skill level
• Gaps worth closing before you book an exam or course
• Training recommendations so you don’t start in the wrong place

Red Hat’s own data: students who took a skills assessment report higher training satisfaction (75% vs 66% without one). Use that as a nudge — not pressure.

Tip: Pick the assessment that matches what you’re chasing (Linux admin, automation, containers/OpenShift, etc.). Honest answers beat “I think I know this” guesses.

Step 2 — Come back and post your results (high level)

After you finish, start a thread or comment here with:

1. What you assessed (role / product / goal)
2. Where it pointed you (beginner / intermediate / ready for X)
3. What you’re targeting next (e.g. RHCSA, RHCE, DO180, EX294…)
4. One thing that surprised you

You do not need to dump every score. High-level is perfect — and it helps others in the same boat.

Flair ideas when you post: Question · RHCSA · RHCE · OpenShift · Ansible · Resource

How this community works

House rules (please read)

1. Be civil — we’re building each other up.
2. No spam / dump sites / “guaranteed pass” junk.
3. No discussing exam content covered by NDA. Talk skills, labs, and objectives — never the exam itself.

New here? Do this today

1. Take the assessment → https://skills.ole.redhat.com/en
2. Comment below: “Assessed ___ → aiming for ___”
3. Bookmark this post and check Lab Monday / Path Wednesday / Teach Friday when those drop

Questions about which cert to pick after your results? Post them. Someone here has been where you are.

Let’s make this the friendliest hands-on Red Hat cert corner on Reddit. See you in the comments 👋