Contribution - (Full Biograpy)

In 1970, McMahon was a research department head at Bell Labs who realized the benefits of the new Unix operating system for text processing. He convinced the management to buy a new PDP-11 computer which became an important milestone in the Unix development.

McMahon's contributions to Unix include implementations of [ext] sed (stream editor), grep (grep regular expressions), qsort (quick sort) and comm (data networking).

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