Theodore Ts'o

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**Theodore Ts'o**
Theodore Ts'o
Born	1968 Palo Alto, California, USA
Residence	Medford, Massachusetts, USA
Nationality	USA
Field	computer scientist, free software developer
Alma Mater	Massachusetts Institute of Technology
Known for	Linux, E2fsprogs, Kerberos, IPsec

Theodore "Ted" Ts'o (born 1968) is a software developer known for his contributions to the Linux kernel, in particular his contributions to file systems.

He graduated in 1990 from MIT with a degree in Computing science. After graduation he worked in the Information Systems & Technology (IS&T) department at MIT until 1999, where among other things he was project leader of the Kerberos V5 team. After IS&T he went to work for VA Linux for two years.

Since December 2001 he has been employed by IBM where he works to improve the performance and scalability of the Linux kernel.

Ts'o started working on the Linux kernel in July, 1991, when the kernel was still in its infancy. According to Linus Torvalds he was the first Linux kernel developer from North America.

He is the primary developer and maintainer of the E2fs programs, the userspace utilities for the ext2 and ext3 filesystems.

He was a member of the Security Area Directorate for the Internet Engineering Task Force, and was one of the chairs for the Ipsec working group. He was one of the founding board members for the Free Standards Group, and currently serves that organization as its Chairman.

Ts'o is currently serving as Treasurer for Usenix, and has chaired the annual Linux Kernel Developers Summit in Ottawa.