THE NOTEBOOKUseful notes.
Useful notes.
For real-world IT.
Focused walkthroughs and checklists for troubleshooting systems and keeping infrastructure supportable.
3 guides
LINUX / SYSTEMD
Linux · Practical guide
A Linux service won’t start. Where do you look?
A repeatable, read-only workflow using systemctl and journalctl to find the useful evidence.
WINDOWS / POWERSHELL
Windows · Practical guide
DNS or connectivity? Prove which one.
Separate name resolution from TCP connectivity with a few focused PowerShell checks.
OPERATIONS / RECOVERY
Operations · Practical guide
A backup is only useful if you can restore it.
A practical recovery rehearsal checklist, from selecting a backup to recording what worked.
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