Here are the most popular Linux questions I see (and use) during DevOps interviews.
1:11 - Basic Linux Interview Questions (ssh, ls, cd, cp, pwd, rsync, systemctl, df, du, ip addr, ip route)
4:55 - Slightly more advanced Linux (init, systemd, systemctl, journalctl, some linux philosophy, /proc filesystem)
8:01 - open-ended questions and troubleshooting (top/atop/htop/glances, lsof, /proc, ss or netstat, inodes)
11:05 - discussing past projects, planning a hypothetical implementation/project
Step-by-step project-based Linux course for beginners: https://www.udemy.com/course/hands-on-linux-self-hosted-wordpress-for-linux-beginners/?referralCode=19C0A7DEE2FD53C9C09D
Free Linux Sysadmin Course Playlist: https://www.youtube.com/playlist?list=PLtK75qxsQaMLZSo7KL-PmiRarU7hrpnwK
DigitalOcean referral link: https://m.do.co/c/0380a1db56a6
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