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remove consecutive duplicate rows | Unix Linux Forums | Shell Programming and Scripting
Make all lines uniq (make duplicate consecutive line appear only once):

awk '{sub(".*"$2,$2)}1' yourfile | uniq
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yesterday by skinnymuch
shell - How can I delete duplicate lines in a file in Unix? - Stack Overflow
Issue with Ruby pry history duplicating. Been having this issue for so long. Pretty sure on macOS and Linux Ubuntu 14 VM. Both.
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yesterday by skinnymuch

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