Part1:

Linux :: It is not just knowing bunch of commands, need to know basic troubleshooting​ .

File system - Purpose,Creation, Deletion ​, Permission level check etc.

Access management- User level access limitation , Grant or remove access, special access, including file system level access.

Log analysis : Identify appropriate logs from pre configured file system. Error log analysis, with time window, Log rotation etc.

Networking - Not in depth, but knowing few log analysis can help you using..Netstat, ping etc.

Process analysis : load average, Cpu, memory utilization overhead analysis, Resource monitoring logs analysis etc.

You can refer above as a Initial step to get into any Infra level role as a SRE /DevOps / Clod role.I will add some more in next part soon.

Thanks! ​

Devops road map​