Hadoop,Hbase,Solr,Nutch
搭建之 JDK 的安装，版本选择
（一）查看已经安装的 CentOS 版本信息
1 cat /etc/issue
CentOS release 6.6 (Final)
2 cat /etc/redhat-release
CentOS release 6.6 (Final)
3 cat /proc/version
Linux version 2.6.32-504.12.2.el6.x86_64 (mockbuild @c6b9.
bsys.dev.centos.org)(gcc version 4.4.7 20120313 (Red Hat 4.4.7-11)
(GCC) ) #1 SMP Wed Mar 11 22:03:14 UTC 2015
