Space Blog
LooseChanj writes "Ed Lu, a member of
the Expedition 7 crew of the ISS has been sending back some extremely
well written and interesting commentary
about his mission, and some of the things one has to deal with in
space. This is exactly the kind of stuff we need to see more of
out of NASA!"
The laptops that plug directly into the core flight computers to allow the crew to do command and control of the station itself (critical things like maneuvering, opening valves, etc.) are running Solaris 2.5.
These laptops are currently IBM 760 XDs but they are going to be upgraded next year, at which point the OS will be transitioned to Linux. Some of the payloads in the racks use various flavors of Unix depending on what the investigators put together but I'm not sure how many (if any) of those are Linux.