Meta Production Engineer interview questions

Was contacted via LinkedIn and agreed to a phone screen. The phone screen was about 20 mins and 10 questions that focused on Unix administration, specifically handling of processes and tracing processes. I made it to the code interview which was easy and kind of fun. My interviewer really wanted me to succeed and gave me test cases that helped me solve my question. I did not make it any further because my programming is not really refined, I'm a system admin with a bit of coding skill and they want coders with decent admin skills.