find ./ -type f -name 'access_bbs.log'|xargs grep '222' > ./222.txt
如果想查一个帖子的访问记录
find /usr/local/nginx.1.0.5/logs -type f -name 'access.log'|xargs grep '3578792' > ./3578792.txt
find /usr/local/nginx.1.0.5/logs/2012/* -type f -name '*.log'|xargs grep '3578792' > ./3578792.txt