From a press release on Business Wire: "Caldera International, Inc. (Nasdaq:CALD) today announced it will Open Source the AIM performance benchmarks and the UNIX Regular Expression
Parser, along with two UNIX utilities awk and grep.
These technologies will be released under the GPL (Gnu General Public License). In a related move, Caldera will also be making the Open UNIX 8
source code available to members of its developer program who request it."
August 20, 2001