Sysadmin Field Reference

Twenty-six cheat sheets live on this site, one page each, and every one of them is free to read. This is all of them in a single PDF: one file to search, one file to keep current, and no working out which of twenty-six downloads is the newest.

It is built for the machine where a PDF reader stays open beside the terminal, rather than for the printer. Each sheet keeps the layout it has on its own page, down to the spacing, and a contents page lists every one of them against its own page number.

The file

Cover of the ZAUR.IT Sysadmin Field Reference
What it is
26 cheat sheets, one PDF
Length
113 pages, A4
Format
PDF, selectable text, 1.7 MB
Version
2.0, reviewed September 2026
Updates
12 months from purchase
Typeset in
Inter and JetBrains Mono

Personal, one named person - 19 EUR. Team, up to five people in one organisation - 49 EUR. Both prices include VAT.

Payment on a secure Stripe page: card, Apple Pay or Google Pay. The download link appears on the next page and arrives by email. Prefer to try first? Five complete sheets are free.

Why pay for something that is free on this site

Because nothing is hidden behind the price, and nothing is going to be.

The whole thing is open and stays open. What you pay for is the form: one versioned file instead of twenty-six browser tabs.

Every page in this PDF is the page you can read for free at zaur.it/cheat-sheets, and it will stay that way. If the material mattered more than the form, saying so here would only cost me the trust of the person reading it, who would find out within a minute of opening the file.

What the file gives you is a single artifact: searchable offline, on the laptop you take to a site with no connection, on the jump host, in the folder next to your runbooks. One thing to keep current instead of twenty-six.

What it looks like

Six pages from the file, at the resolution you would read them at. The contents page, and pages from the Windows, PowerShell, networking, web and Linux sections.

Contents page listing all twenty-six sheets with page numbers
Windows Command Line page with a two-column command table
PowerShell Commands opening page
Subnet mask page with CIDR table and binary examples
HTTP status codes page
systemd and journalctl page

Screenshots only go so far. This is one complete sheet exactly as it ships inside the collection, cover and back page included, so you can judge the typography and the tables at full size before deciding anything.

Download the Robocopy sheet

PDF, five pages, 313 KB. No address required.

What is in it

Twenty-six sheets, in the order you meet them on the job. Every title links to the same sheet on this site, so you can read any of them in full before buying anything.

Windows

Linux

Networking

Virtualization

Security and web

Tooling

Licence, in plain words

The file is licensed, not sold. The download page and the email with your link state which licence applies.

Personal covers one named individual. Print it, keep copies on machines you control, use it at work.

Team covers up to five named people in one organisation under a single purchase. Beyond five, buy additional Team licences.

Permitted either way: quoting a few rows, or a screenshot of part of a page, in internal work communication - a ticket, a runbook, a chat with a colleague - as long as the zaur.it source line stays visible. That is how a reference actually gets used, and pretending otherwise would make the licence a fiction.

Not permitted: reselling or giving the file away; publishing it, or any whole page from it, anywhere reachable beyond your licensed users; including it in training material, paid or free; distributing individual pages as separate documents.

Updates

Every purchase includes twelve months of updates from the purchase date. Corrections and new revisions replace the file behind your download link, so collecting an update means opening the same link again: the one on the page you see after paying, or the one in the email from support@zaur.it. If you lose it, the download page sends it again to the address you bought with.

After twelve months the link stops working. Every copy you downloaded until then is yours to keep.

The current version is 2.0, reviewed September 2026. Corrections are welcome at support@zaur.it and they get fixed.

How the purchase works

The checkout runs on Stripe. The seller of record is Link, Stripe's checkout service: Link makes the sale, sends the receipt and the invoice, calculates and pays the VAT, and its buyer terms apply. Your card statement shows a line starting with LINK.COM* and the zaur.it name.

Before you pay, you confirm on this page that you want the file straight away and that this ends the 14-day right of withdrawal, which EU law allows for digital content delivered at once. The download link is on the page you land on after paying, and in an email from support@zaur.it.

Refunds are decided by Link under its own policy. It covers a file that never arrived, a file that is not what this page describes, and a payment you did not make; it does not cover a change of mind. If something is wrong with the file, write to support@zaur.it first: that part is on me, and it gets fixed.

The full terms are on the Terms of Sale page.

FAQ

Is this exactly the same material that is free on the site?
Yes, page for page. The sheets in the file are the sheets on the site, and both stay current together. The difference is the form: one versioned PDF with a contents page, instead of twenty-six separate pages and twenty-six separate downloads.
What exactly do I get after paying?
One PDF: 113 pages, A4, selectable text, about 1.7 MB. No DRM, no account on this site, nothing to install. It opens in any PDF reader and searches like any other document.
Can I print it?
Yes. It is laid out for reading on screen, but it prints correctly on A4 and every sheet begins on its own page, so you can print just the ones you want.
My colleague wants a copy. Can I forward the file?
Not under the Personal licence - that one covers one named person. The Team licence covers five people in one organisation for 49 EUR, which is the cheaper answer as soon as two of you want it.
Can I paste a few rows into a ticket or a runbook?
Yes. Quoting a few rows or screenshotting part of a page in internal work communication is explicitly permitted, as long as the zaur.it source line stays visible. Publishing a whole page anywhere your licensed users cannot already reach is not.
I lost my download link. What now?
Open the download page, enter the address you bought with, and the link is sent again. It works for twelve months from the purchase.
Do I get an invoice?
Yes. Link sends a receipt and an invoice as PDF by email right after the payment. They name Link as the seller, because Link is the merchant of record for this sale. Buying for a company? Tick "I'm purchasing as a business" at checkout and add the company name and VAT number; they appear on the invoice.
Can I get a refund?
For a file that did not arrive or is not what this page describes, yes: Link handles those within 60 days of purchase, and support@zaur.it can help first. A change of mind after downloading is not refunded; that is what the checkbox before payment says.
Can I buy a single sheet instead of the collection?
Not at launch. Every sheet is readable in full on this site for free, so a single-sheet purchase would be buying a PDF of one page. If enough people ask for specific sheets, that changes.

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