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System Administrator Truths

What are your top ten system administrator truths? Here are a few of mine:

  • Be very pessimistic
  • Start from a known state of the system (switch off – switch on).
  • Make sure you can leave the system exactly like it was before you touched it.
  • Dont fix what isn’t broken.
  • Even if you are genius, follow the manual/RTFM.
  • Dont reinvent the wheel; compare with something thats working.
  • Contrary to belief, cables can fail.
  • If its exists, it exists for a reason – Delete Never, Rename Always
  • Your memory is not infinite, nor are your coworkers mind readers; document.
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