UNIX Crossword answer

'UNIX' is a 4 letter Word starting with U and ending with X

Crossword clues for UNIX

Clue	Answer

Operating system developed at Bell Labs (4)	UNIX
Operating system used since the 1970s (4)
OS X basis (4)
Operating system choice (4)
Windows alternative (4)
Computer operating system (4)
Alternative to Windows (4)
Alternative to DOS or Windows (4)
Computer system developed at Bell Labs (4)
Bell Labs operating system (4)
It has "batch" and "patch" commands (4)