My name is Bill Calkins and I’m the author of the Solaris Administrator Certification Training Guide (Solaris 2.6, 7, 8, and 9), Inside Solaris 9,  Solaris 10 System Administration Exam Prep 1 and 2, and the Solaris 11 System Administration textbook. I’ve sold over 100,000 copies around the world.  Thousands of readers have been certified as a result taking my training courses and using my study materials.  I draw from over 25 years of experience as a UNIX / Linux subject matter expert and educator.  

I began my career in the early 1980’s managing Sun systems for a manufacturing company in Michigan. In 1994, I formed a consulting and training business, UnixEd. Since that time I’ve worked as a contract system administrator at over 250 companies across the United States and I’ve trained thousands of system administrators in Oracle Solaris, IBM AIX, HP’s HP-UX, and Linux. Not only have I spent my career administering these platforms, I’ve worked on nearly every UNIX platform that has existed including SCO, Digital UNIX, IRIX, and many Linux distributions. In my spare time, I’ve written 11 best selling books on the Solaris Operating System. These books have been sold around the world and published in several languages.

UnixEd has been in business for over 20 years. We continue to provide the best UNIX and Linux training in the industry because that’s all we do. We are focused and dedicated to providing the best training in the industry. I invite you to read what our clients have written about us.

Corporate Address

6174 New Holland St

Hudsonville, Michigan 49426


Training Facility

225 College Avenue

Holland, Michigan 49423


Contact Information

Bill Calkins

Phone: (616) 283-4636