What is Douglas McIlroy?
{{Infobox scientist | name = Malcolm Douglas McIlroy | workplaces = | notable_students = | doctoral_students = | thesis_year = 1959 | thesis_url = | thesis_title = On the Solution of the Differential Equations of Conical Shells | alma_mater = [[Cornell University]] (B.S., 1954)<br/>[[Massachusetts Institute of Technology]] (Ph.D., 1959) | education = | patrons = | fields = [[computer science]], [[mathematics]], [[engineering]] | native_name = | nationality = | citizenship = | other_names = | birth_place = | birth_date = {{birth year and age|1932}} <!--{{birth date |YYYY|MM|DD}}--> | caption = McIlroy at the Japan Prize Foundation in 2011 | image = Douglas McIlroy.jpeg | native_name_lang = | website = {{url|http://www.cs.dartmouth.edu/~doug/}} }} '''Malcolm Douglas McIlroy''' is an [[Americans|American]] [[mathematician]], [[engineer]], and [[programmer]]. He is famous for inventing the pipeline used in the [[UNIX]] computer operating system,<ref>{{Cite web|last=[[Erik Raimond]]|first=|date=2003-09-19|title=Basics of the Unix Philosophy|url=http://www.faqs.org/docs/artu/ch01s06.html|url-status=dead|archive-url=https://web.archive.org/web/20100715152821/http://www.faqs.org/docs/artu/ch01s06.html|archive-date=2010-07-15|access-date=2014-09-10|website=|language=en}}</ref> the principles of component-based software engineering <ref>{{Cite web|last=Макілрой|first=Малкольм Дуглас|date=January 1969|title=Mass produced software components|url=http://homepages.cs.ncl.ac.uk/brian.randell/NATO/nato1968.PDF|archive-url=https://web.archive.org/web/20140531194610/http://homepages.cs.ncl.ac.uk/brian.randell/NATO/nato1968.PDF|archive-date=2014-05-31|access-date=2014-09-10|website=Software Engineering: Report of a conference sponsored by the NATO Science Committee, Garmisch, Germany, 7-11 Oct. 1968|publisher=Scientific Affairs Division, NATO|page=79|language=en}}</ref> and several original UNIX utilities: spell, diff, sort, join, speak, and tr. == Biography == Douglas McIlroy went to school and earned a [[Bach