Performing System Maintenance
The overall function of a system administrator is to keep the system up and running. Not only does this mean applying the latest software updates, adding and replacing hardware, and adding new software, but it also means being part soothsayer, part instructor, and part detective. The system administrator must
Know where to find things
Plan processes
Have a back-out plan and know when to use it
Make changes in small increments
Test all changes
Communicate effectively and in a timely fashion with users
Each of these tasks can be daunting. For example, it takes years of training and practice to understand completely how everything in Linux works, and just about the time you figure out everything, it changes.
The first task ...
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