使用实现复制ulimit-SHn65535   wgethttp://monkey.org/~provos/libevent-2.0.12-stable.tar.gz   tarzxvflibevent-2.0.12-stable.tar.gz   cdlibevent-2.0.12-stable/   ./configure--prefix=/usr   make&&makeinstall   cd../  1.2.3.4.5.6.7.