What format is the ebook of the windows sysinternals administrator's reference?
Is it in PDF (so I can always have it with me, even without internet connection?)
Thanks for your interest in this book. Yes, it is available in PDF, as well as epub and mobi. It's available from oreilly.com at http://oreilly.com/catalog/0790145316974.
You can see which formats an ebook is available in by looking at the Buying Options box on the book's page on our site. If you see an ebook option, it will list the available formats below.