Practical Guides for Sysadmins: Linux, Windows, Networking & DevOps
Step-by-step tutorials, troubleshooting checklists and plain-English explainers for people who run servers, networks and desktops.
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My Ubuntu laptop stopped booting after an update. Instead of the login screen I got a BusyBox shell… - Automatic WordPress Backups to Google Drive on a Docker VPS (Free, With rclone)
Nightly WordPress backups from a Docker VPS to Google Drive with rclone: database dump, files archive, retention, Drive upload, a restore test and the pitfalls (tar status 1, trash quota). - How to Download the Original Windows 11 ISO for Free (Official Microsoft Method)
How to download the official Windows 11 ISO from Microsoft for free: the three download options, verifying the SHA-256 hash, checking requirements, and making a bootable USB drive. - Windows 11 Home vs Pro: What You Actually Get and When Pro Is Worth It
Windows 11 Home vs Pro explained: BitLocker, Remote Desktop host, Hyper-V, Sandbox, Group Policy, domain join and RAM limits, plus how to check your edition and upgrade. - Linux Privilege Escalation Checks: How to Audit Your Own Server
A defensive Linux privilege-escalation audit with real output: sudo rules, SUID and SGID files, capabilities, root-equivalent groups, writable cron paths and patch level. - GDB Cheat Sheet for Sysadmins: Backtraces, Breakpoints and Core Files
A GDB cheat sheet for sysadmins with real output: reading a crash backtrace, breakpoints, watchpoints, attaching to a hung process and saving or opening core files.
Hi, I’m Maruthi Vishnu …
I’m a Systems Administrator and DevOps Engineer with 6+ years of hands-on IT experience. Started my career at Revalsys Technologies as a System Administrator — managing Windows Server, Active Directory and enterprise infrastructure. Then deepened my sysadmin expertise at vSplash Techlabs, before moving into DevOps and Cloud at Ratnam Solutions Private LTD where I work with AWS infrastructure today. sysadmin.co.in is where I document everything I learn, break, and build — so you don’t have to figure it out the hard way.
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