MongoDB Senior Site Reliability Engineer interview questions

I got a call from HR and followed by Technical Interview by two engineers , one of them was just auditing. They wanted someone who has linux experience with coding. I wrote the code they asked and answer questions like how curl works etc. The guy who interviewed was not a linux person and spent too much time, like 15 min asking about `ls -l *`. I have 20 years of experience managing linux infra and that is what they want to scrutinize in. It kind of ended okay, but clearly the person who interviewed is not prepared as he had no other questions to ask and went back to `ls` every time.