@paul I made that exact observation some 20 years ago when I nuked all the cron jobs on our pet email server at school by slipping a tiny amount on the keys
@paul Yep, did that when typing in a shell on my phone. I just stared at the returned prompt in disbelief. Had to go to the man page to see what -r did.
@paul been there done that… once I even forgot to include any argument after crontab command on Solaris and it replaced existing crontab with empty one
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