sudo is used to execute a command at root level. This way, you don't have to su into root, you just excute that command.
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たしかにひとつのじだいがおわるのお
ぼくはこのめでみたよ
だけどつぎがじぶんおばんだってことわ
しりたくなかったんだ
It's my turn next.
Shakespeare liked regexes too!
/(bb|[^b]{2})/
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