付爸爸的神奇日記本

# see

http://www.proftpd.org/localsite/Userguide/linked/x341.html
http://www.aconus.com/~oyaji/ftp/proftpd.htm

# linux logrotate detail

http://linux.vbird.org/linux_basic/0570syslog.php
http://linux.about.com/od/commands/l/blcmdl8_logrota.htm

# there is many other proftp document

http://fanqiang.chinaunix.net/app/ftp/2006-02-16/4007.shtml

# other logrotate document

http://mattchen.info/2005/12/30/linux%E7%9A%84logrotate%E6%9C%8D%E5%8B%99/