Thomas A. Limoncelli

Thomas A. Limoncelli

Time Management and System Administration author/trainer

  • @yesthattom

New York, New York

Areas of Expertise:

  • time management
  • IT policy
  • speaking
  • training
  • writing
Thomas A. Limoncelli is the author of O'Reilly's Time Management for System Administration. He is an internationally known author and speaker on many topics, including system administration, networking, security, and grassroots political organizing. A system administrator since 1988, he now speaks at conferences around the world on topics ranging from firewall security to time management. He has worked for Cibernet, Dean For America, Lumeta, Bell Labs/Lucent, AT&T, and Mentor Graphics. He and Christine Hogan co-authored The Practice of System and Network Administration (Addison Wesley). He holds a B.A. in Computer Science from Drew University in Madison, New Jersey, USA. He publishes a blog on

Time Management for System Administrators Time Management for System Administrators
by Thomas A. Limoncelli
November 2005
Print: $24.95
Ebook: $19.99

Recent Posts | All O'Reilly Posts

Thomas A. blogs at:

Unmotivated to document a process? Pick the things you hate!

March 15 2010

(I originally wrote this for system administrators, but it applies to other fields too.) The hardest part of writing documentation is getting started. It is hard to decide what to document, it is hard to tell when you've documented something... read more

End every helpdesk request on a good note

March 12 2010

One thing we've learned from the (relatively) new field of behavioral economics is that people tend to remember the pain towards the end of something, not the total pain. Thus if a painful surgery ends with a long period of... read more

Spending 10 minutes to save 1

June 16 2009

I've been looking for simple things I can do make my life more convenient. By "simple" I mean they have to take less than 10 minutes to accomplish. I'll gladly trade 10 minutes to solve 1 minute of frustration (or... read more

Recent Posts | All O'Reilly Posts

"This book is worth your dollars and your time. Even if you are skeptical of his system, the book is worth a read for ideas and insight. It should be given to every new sysadmin when hired, and anyone who manages sysadmins. I plan on recommending it to my boss and colleagues."
--Martin Gehrke, SNAPGH