Sun Microsystems is working hard to ensure that Linux and Solaris play well together.
The server seller is continuing its effort to integrate Linux interfaces into its Solaris operating system, a move that would make it easier to bring programs based on the Linux operating system to Solaris machines. But Sun has also begun work to bring Solaris features to Linux, said Vivek Mehra, vice president and general manager of Sun's Cobalt group.

The work indicates that Sun's push to embrace Linux is becoming more than just a publicity stunt. For years, Sun dismissed Linux as an inferior relation to Solaris, but the Santa Clara, Calif.-based company this year bowed to market forces and announced full-fledged Linux support.