Early operating system

42 Across4 lettersThursday, 30 April 2026

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Keywords
operatingsystemearly
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About this clue

This clue appeared in the LA Times on Thursday, 30 April 2026. The answer UNIX is a 4-letter entry.

This answer appears frequently in crosswords. View UNIX answer history →

Frequently asked questions

What is the answer to "Early operating system"?
UNIX
How many letters is the answer to "Early operating system"?
The answer has 4 letters.
When was this clue last seen?
This clue last appeared in the LA Times crossword on .
Has this crossword clue appeared before?
Yes. Variations of this clue have appeared 11 other times.

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