David A. Wheeler: New Report Sizes Up Linux

[ Thanks to David A.
for this report: ]

I’ve just released a report on the size of Red Hat Linux
version 6.2’s source code. Interesting results include the

  1. This Linux distribution includes well over 17 million physical
    source lines of code (SLOC).
  2. Over 4,500 person-years of development time would have been
    required to build this distribution by conventional proprietary
  3. It would have cost over $600 million (in year 2000 dollars) to
    develop this distribution in the U.S. using conventional
    proprietary means.

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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