http://www.cnblogs.com/chinacode/archive/2011/11/01/2232258.html
http://space.itpub.net/8334342/viewspace-612462
http://linux.about.com/od/commands/l/blcmdl1_locate.htm
http://askubuntu.com/questions/23692/why-is-var-lib-mlocate-db-almost-800-mb
前天忘记问老大了
