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A comment on Ask HN: If Unix is written in C, how did they run C before Unix?. Parent comment

Re:Ask HN: If Unix is written in C, how did they run C befor... by gamache on Tuesday April 04, 2023 @01:25PM (#35443024)
IBM had OS/360 in 1966, about a decade before CP/M. Not sure where "OS" first appeared but it was before that.

Related: early OSes were not timesharing systems. They were batch oriented - you submit your stack of punch cards to the operator, and pick up your output later once they've had a chance to run it.

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