A large part of pf9 is based on plan9port with only minor
modifications. This includes the source files within the directories
include, src/lib*, src/cmd
the scripts 9a, 9c, 9l in linux/bin 9.rc, doctype, man, lookman, lc and
psfonts in rc/bin, and some yacc/lex support files in lib.
Homepage of Plan9port: http://www.swtch.com/plan9port/
For plan9port (mostly), and additional files distributed with pf9,
the Lucent Public License, v1.02, applies, please see
LICENSE.plan9port for details.
Some code has been derived from Inferno utilities sources
(utils/rcsh/Nt.c, dirstat-Nt.c), other ideas have been taken
from 9pm.
Devdraw.exe for MinGW has been derived from drawterm, adapted
to plan9port's devdraw structure.
---------------------------------------------------
The mkfile-hierarchy is based on files from Plan 9, i.e. the files
src/mk*
are copies of the original Plan 9 files, some with slight modifications
and some additions from plan9port.
---------------------------------------------------
Two scripts, todos and fromdos, written by Russ Cox, have been
copied from the contrib directory of the Plan 9 system:
http://cm.bell-labs.com/sources/contrib/rsc/scripts/
(The rely on ed, whose port is broken again, unfortunately.)
--