Linux knowledge is tested in almost every SRE interview. You'll be asked to explain kernel concepts, debug processes, and troubleshoot systems under pressure.
Your interviewer wants to see that you understand what happens beneath the abstractions. When a container is slow or a process is consuming memory, you need to diagnose the root cause without guessing.
I'll cover the Linux concepts that appear most frequently in interviews: process management, memory, filesystems, and permissions. You'll learn what interviewers ask and how to answer with confidence.