Clue | Answer | |
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Operating system developed at Bell Labs (4) | ||
Operating system used since the 1970s (4) | ||
OS X basis (4) | ||
Operating system choice (4) | ||
Solution UNIX is 4 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is UNIX with 4 letters, and the shortest is UNIX with 4 letters.
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The solution is 4 letters long.