Back in the days after college, I was a sysadmin for a multi-machine Unix shop. I remember my first week, when I was trying to free some space on the main machine. SOP is to clear /tmp, right? So off I go, logged in as root, and do ls -alF /tmp - filled to the gills. So then I enter rm * to clear it - no worries right?
Of course, I had forgotten one small command - cd /tmp. The good news was that only eight files were deleted. The bad news was that pwd was /. I had blown away the kernel, kernel backup, and a few other critical system files, and I got to pull them off the weekly backup before I got to go home that night. What saved me was using rm * instead of rm -r *. I wasn't fired, but I was chagrined.
On a bright note, at least the only thing I lost was a few hours - it could have been $38 billion dollars...
Link to Oops! Techie wipes out $38 billion fund - Tech News & Reviews - MSNBC.com
