David Both, SCSA, RHCT, RHCE is an Open Source Software and Linux advocate, trainer, writer, and speaker. He has been working with Linux and Open Source Software since 1996 and has been working with computers for over 50 years. He is a strong proponent of and evangelist for the "Linux Philosophy for System Administrators."

He has taught RHCE classes for Red Hat and has worked at MCI Worldcom, Cisco, and the State of North Carolina. He has taught classes on Linux ranging from Lunch'n'Learns to full five day courses.

David has written articles for magazines including, Linux Magazine, Linux Journal, and OS/2 Magazine back when there was such a thing. David wrote for Opensource.com (OSDC) before it was closed by Red Hat. He now writes for Both.org while working with a core group of OSDC alumni to recreate the community that made OSDC so successful.

David has published eight books with Apress, "The Linux Philosophy for SysAdmins," August 2018, and a three volume self-study training course, "Using and Administering Linux -- From Zero to SysAdmin," released in December, 2019, and "Linux for the Small Business, " released in late 2022. The second edition of "Using and Administering Linux -- From Zero to SysAdmin," was released in 2023.

He has found some interesting and unusual ways of problem solving, including sitting on one computer on which he was working.