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Tim Cook made an appearance at the Boylston Street Apple store

Tim Cook at Friday’s MIT commencement.
Tim Cook at Friday’s MIT commencement. (John Tlumacki/Globe Staff)

Apple chief executive Tim Cook was spotted at his company’s Boylston Street outlet Friday.

Cook makes appearances at Apple outlets on a fairly regular basis, and he was in town to speak at MIT’s commencement, where he told graduates: “Don’t listen to trolls, and for God’s sake don’t become one.”

Later on Friday, people, including store employees, took to social media to post photos with Cook at the Boylston location:

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Today I met #Timcook at the #applestore

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#timcook #selfie

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Just another day in the office #timcook

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When the boss visits work. #apple #timcook

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