学习网址

http://red2.sunderland.ac.uk/python/genindex.html

http://www.adminsehow.com/2011/09/iptables-packet-traverse-map/

mysql:

http://imysql.com/

linux kernel

http://ilinuxkernel.com/

python

http://www.pythoner.com/

http://www.crifan.com

ftp目录

http://www.crifan.com/files/doc/docbook/