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Linux develop 2.6.32-358.11.1.el6.i686 #1 SMP Wed Jun 12 01:01:27 UTC 2013 i686 i686 i386 GNU/Linux
gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC)
lex 2.5.35
yacc - 1.9 20070509