I've just released a report on the size of Red Hat Linux
version 6.2's source code. Interesting results include the
This Linux distribution includes well over 17 million physical
source lines of code (SLOC).
Over 4,500 person-years of development time would have been
required to build this distribution by conventional proprietary
It would have cost over $600 million (in year 2000 dollars) to
develop this distribution in the U.S. using conventional
The largest components (in order) were the linux kernel, the
X-windows server, egcs, and emacs. The languages with the most
lines of code were (in order): C, C++, LISP, shell, and perl; many
other languages were also represented.
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