SysAdmin stuff is quite easy in terms of complexity to some sw stuff. The problems, similar to traditional engineering, tend to come from the rather high cost of failure.
To expand further, it's easy to setup a system but hard to setup one that's reliable and/ or resilient. It's hard to maintain systems that are not documented and/ or wrongly documented (outdated, inaccurate). It's even harder to always make sure everything's consistent and you don't lose/ damage data.
admittedly I recently added a soft barrier "for dangerous commands please ask for confirmation"
I picked a random GitHub issue that was some issue with ./configure. Seems like it helps to me.
Today's big time savings came from this prompt: "Write a Java method that uses the Eclipse AST parser to create a simple markdown file showing the commented method signatures of a given Java class text file."