memcached安装

首先安装libevent,然后安装memcached，过程都很简单
configure 
make
make install

就OK了。
但运行memcached时遇到问题。错误提示如下：
error while loading shared libraries: libevent-1.2a.so.1: cannot open shared object file: No such file or directory

总是找不到库libevent-1.2a.so.1

google一下。找到方法了。运行LD_DUBUG=libs 就可以知道memcached启动时库的加载路径。具体如下：
 LD_DEBUG=libs ./memcached -v
      5689:     find library=libevent-1.2a.so.1 [0]; searching
      5689:      search cache=/etc/ld.so.cache
      5689:      search path=/lib64/tls/x86_64:/lib64/tls:/lib64/x86_64:/lib64:/usr/lib64/tls/x86_64:/usr/lib64/tls:/usr/lib64/x86_64:/usr/lib64           (system search path)
      5689:       trying file=/lib64/tls/x86_64/libevent-1.2a.so.1
      5689:       trying file=/lib64/tls/libevent-1.2a.so.1
      5689:       trying file=/lib64/x86_64/libevent-1.2a.so.1
      5689:       trying file=/lib64/libevent-1.2a.so.1
      5689:       trying file=/usr/lib64/tls/x86_64/libevent-1.2a.so.1
      5689:       trying file=/usr/lib64/tls/libevent-1.2a.so.1
      5689:       trying file=/usr/lib64/x86_64/libevent-1.2a.so.1
      5689:       trying file=/usr/lib64/libevent-1.2a.so.1
      5689:

根据上面的查找路径，把libevent-1.2a.so.1拷贝到/usr/lib64/下启动就OK了。

linux还有很多要学，一点点积累：）