LinuxCert Guru

LinuxCert Guru

Share

Prepare for RHCSA
(Red Hat Certified System Administrator) and RHCE (Red Hat Certified Engineer) using Hands-on exercises!

10/05/2026

Every Linux problem eventually becomes a networking problem 😭

Before blaming the server, always check:
🌐 DNS
🛣️ Routing
🔥 Firewall
📦 MTU

Because half the time… it’s networking.

Practice Networking on hands-on lab at LinuxCert.Guru
Link In BIO

10/05/2026

I hardened the server. Changed the SSH port. Disabled root login. Added keys. Configured the firewall.

Still got root access from the internet. 😳

The issue wasn’t a zero-day exploit or some advanced hacker technique, it was a single firewall default set to ACCEPT instead of DROP. One overlooked setting opened the door.

Big reminder for every sysadmin and homelab owner:
⚠️ Secure defaults matter more than fancy tweaks.
⚠️ Audit your configs, not just your intentions.
⚠️ Logs are useless if nobody checks them.

Sometimes the most dangerous vulnerability is a misconfigured default. 🔐

09/05/2026

How it genuinely feels to use `kill ` in Linux 😭💀

POV:
You finally find the process causing problems…
and now it’s time for ex*****on.

Every SysAdmin turns into an anime villain for 2 seconds.

08/05/2026

IT Guy: “Press any button to continue.”
Me: *presses power button* 💀

Every IT support person felt this pain instantly 😂

08/05/2026

Choosing the right file-sharing protocol can save you hours of headaches 🔧💻

🟢 NFS = Fastest for Linux-to-Linux environments
🔵 Samba = Best for mixed OS setups (Windows/macOS/Linux)
🟣 SSHFS = Secure and simple for remote access over SSH
Different tools. Different strengths. Pick what fits your workflow. 🚀

07/05/2026

Junior admins restart services. 😅

Senior admins read logs first 🔍

Before blindly restarting anything, use `journalctl` to find the real issue.

Good troubleshooting saves time, prevents downtime, and makes you a better Linux admin 💻

Command:
`journalctl -xe`

Practice logs on LinuxCert.Guru
Link in BIO

06/05/2026

Linux exams aren’t about theory.

They’re about what you can actually do under pressure 💻

Can you solve real tasks when it matters?

That’s what sets you apart.

🚀 Practice real labs: linuxcert.guru

05/05/2026

You don’t need 6 months for RHCSA.

You need focused practice on real tasks.

Most people watch.
Top candidates practice.

Which one are you? 👀

🚀 Start real RHCSA labs (no setup): Link in bio

Photos from LinuxCert Guru's post 05/05/2026

Trying to prep for RHCSA but stuck setting up labs?

You’re not alone.

Most people waste hours:
• Downloading ISOs
• Configuring VMs
• Fixing crashes
• Starting over

And barely practicing.

What if you could just open a tab and start?

No setup. No excuses. Just real practice.

🚀 Try browser-based RHCSA labs
(Link in bio)

04/05/2026

Interviewers don’t care what you watched.
They care what you can do under pressure.
Can you solve real Linux tasks? 🐧
Try it yourself: 👉 Practice labs in bio

03/05/2026

Your Linux commands aren’t broken… 👀

Most errors happen because of small mistakes:

❌ Wrong path
❌ Missing `sudo`
❌ Case sensitivity issues

Remember:
`cd Documents` ≠ `cd documents`

Linux is precise, one small typo can change everything.

Master the basics, avoid the frustration 💻

Want your school to be the top-listed School/college in Singapore?

Click here to claim your Sponsored Listing.

Location

Address

Singapore