
Evil Bitz — workbench notes
Open the case, read the logs, fix the thing.
Practical guides for developers and sysadmins who would rather read the logs than reboot and hope.
The exact commands
Steps are written as the command that was actually run, in the order it was run — not a paraphrase of a menu.
The machine it ran on
The host, the operating system and the versions behind each walkthrough, so you can judge how close your box is.
When it breaks
What to check first, which log to open, and how to put the change back the way you found it.
Fresh from the bench
Latest guides
How to Manage Users and Groups in Linux: Practical Guide (2026)
How to manage users and groups in Linux as of with useradd, usermod, groupadd, sudo access and chmod, plus the verify command…
10 Basic Firewall Rules Every Server Should Have (October 2026)
Learn the basic firewall rules every server should have to block unwanted traffic, limit exposure and protect web, admin and database ports…
WireGuard vs OpenVPN Explained (October 2026): Which Wins?
WireGuard vs OpenVPN explained: compare speed, security, setup, routing and platform support so you can pick the right VPN protocol for your…
What Is a Reverse Proxy and Why Use One? A 2026 Guide
What is a reverse proxy and why use one? Learn how it routes requests, hides backend servers, handles TLS, and keeps apps…
How to Harden a Linux Server for Beginners (2026)
Learn how to harden a Linux server for beginners in : practical steps for updates, SSH keys, firewalls, non-root users, and a…
What Does sudo Actually Do? Linux Privilege Escalation 2026
What does sudo actually do in Linux? It checks a policy file, authenticates you, runs one program as another user, and logs…
File Permissions in Linux Explained for Beginners (2026)
File permissions in Linux explained for beginners with clear examples of owners, groups, others, chmod, chown, and umask, with safe ways to…
Hard Links vs Symbolic Links Explained for Linux (2026)
Hard links vs symbolic links explained for : how each behaves on deletion, filesystem limits, permissions and portability, plus the ln and…
Inodes Explained in Linux: A Practical Guide (2026)
Inodes explained in Linux in : what an inode stores, how inode numbers work, and how to troubleshoot inode exhaustion with stat…

About
A notebook, not a news feed
Evil Bitz collects the notes that get written once a problem is solved: what broke, which command fixed it, and what to check first next time.
It is written for developers, sysadmins and technical hobbyists who open the case, read the logs and want the steps in the right order.








