Doug McIlroy

Doug McIlroy by Peter Adams.

Doug McIlroy, Boston, Massachusetts, 2015

Doug McIlroy was the head of Bell Lab’s Computing Techniques Research Department which created the Unix operating system. McIlroy is widely credited with creating the Unix computing concept known as “pipes” (short for pipelines) which allows users to connect two or more software tools together in order to perform complex computing tasks. McIlroy also authored several of Unix’s core tools such as diff, sort, spell, join, graph, speak, and tr.