NicoDemos
Welcome to NicoDemos! 🐧
I make open source and free Linux tutorials.
My goal is to keep things hands-on and fun: short demos, clear explanations, and a geeky touch.
Whether you’re preparing for exams, running servers, or just curious about Linux, you’ll find guides, tips, and walkthroughs here.
🔔 Subscribe and join me on this open source journey!
Modern Linux CLI Tools #3: EZA, the new LS
RHCSA: WHY?? (And why not Linux+?)
Modern Linux CLI Tools #2: FD, the new FIND
Modern Linux CLI Tools #1: RIPGREP, the new GREP
RHCSA Lab Q23: Flatpak (RHCSA 10 UPDATE) with Flathub, RHEL Registry (GUI + CLI + Commit Rollback)
RHCSA (EX 200) tips and tricks for the exam
Welcome to my RHCSA (EX 200) full course Labs series!
RHCSA Lab Q22b: Reset Root Password (init=/bin/bash method)
RHCSA Lab Q22a: (SUPER IMPORTANT) Reset root password (rd.break method)
RHCSA Lab Q21: Build a Podman image and enable autostart with systemd
RHCSA Lab Q20b: login and pull an image for Podman on a private registry
RHCSA Lab Q20a: Prepare a private Podman registry and push a custom image
RHCSA Lab Q19: Configure a user-specific login message
RHCSA Lab Q18: Apply the recommended tuned profile
RHCSA Lab Q17: Resize a logical volume (and prepare it for the lab :))
RHCSA Lab Q16: Configure a 400M swap partition
RHCSA Lab Q15: Create and mount LVM (using PV and VG) + use fstab for persistance
RHCSA Lab Q14: Create a user with a specific UID and password (really?)
RHCSA Lab Q13: Extract words with a certain string from a dictionary (grep them all!)
RHCSA Lab Q12: "Find" files owned by a user (and modified during the last day + keep paths) and cp
RHCSA Lab Q11: Time sync with chrony (client + server as challenge/bonus)
RHCSA Lab Q10: ACL and file permissions on /var/tmp/fstab
RHCSA Lab Q09: Create a tar.bz2 archive of /etc and bonus scripting :)
RHCSA Lab Q08: Autofs with NFS home directory (client + server config as a challenge!)
RHCSA Lab Q07: Cron job with logger for a specific user
RHCSA Lab Q06: Shared directory with group permissions (setgid, other options explained)
RHCSA Lab Q05: Users, groups, and sudo configurations
RHCSA Lab 00: Setting up Vagrant and VirtualBox for all the labs
RHCSA Lab Q02: Configuring SSH access for convenience
RHCSA Lab Q01a: Networking with nmtui