There was a panel interview over the phone. Then I had to go work location to do in person interview. At the location I had to do phone interview with the person that was located in other country. At the end I had phone interview with the manager.

Where are Linux kernel variables located? What are semaphores? What is shared memory? How to send a signal to a running process? List all open network connections? What is a daemon? How would you troubleshoot performance problems? How would you trace a process? No space in filesystem but df shows lots of free space, what is the issue? Where are mounts specified ? Etc ...