error while loading shared libraries: xxx.so.x"错误的原因和解决办法

http://blog.chinaunix.net/uid-26212859-id-3256667.html 

参考博客

http://hi.baidu.com/newdreamllc/item/687b263c39207cbb124b1478

参考博客2

echo "/usr/bin" >> /etc/ld.so.conf

这是我加的

phpnow中 无法使用exec()函数 Warning: exec() has been disabled for security reasons in

http://sai-cai-sai.blog.163.com/blog/static/47703827201262131155454/