参考：
1.https://blog.csdn.net/liuzhenwen/article/details/7026263
我是全部替换了/lib/为/lib64/
2.https://blog.csdn.net/a29562268/article/details/72757893
3.http://www.mamicode.com/info-detail-1879830.html
4.https://blog.csdn.net/cc41798520101/article/details/78492689
5.https://www.cnblogs.com/mingforyou/p/4103022.html
6.http://blog.51cto.com/hatech/1341208
启动并测试vsftpd：
/usr/local/sbin/vsftpd &
ps -ef|grep vsftpd
kill -9 27046