By Vasudev Ram
This is from the site usesthis.com, a.k.a The Setup :-), which has many interviews of well-known computer (and maybe other) people, about their hardware and software setups (and nowadays device setups too, of course). I've read quite a few of those interviews in the past, and they can be interesting.
Brian Kernighan uses Python. Cool ...  
Brian Kernighan page (at Bell Labs)
Brian Kernighan page (at Princeton University)
 For those who don't know of Kernighan, he was, at Bell Labs, one of the top contributors to Unix and C (from early on, and for a long time), and is the co-author of the classic computer books "The C Programming Language" (with Dennis Ritchie), also abbreviated as K&R, and "The Unix Programming Environment" (with Rob Pike), abbreviated as K&P. Rob Pike has been working on the Go language for the last few years.
 I saw the usesthis.com article about Kernighan via this Reddit thread, which also has some interesting comments.
And I almost forgot to mention, Kernighan also co-invented Awk :-)
I was fortunate to get to read those two books (K&R and K&P) early on in my career. In fact, I should probably say "those four books" or "those six books" :-) because I read them at least twice or thrice. They had a big influence on me, and benefited me a lot in my work over the years, possibly more than any other computer books I've read, before or since then.
- Vasudev Ram - Dancing Bison Enterprises