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我想用yum命令（Red Hat Enterprise Linux版本5）安装Java，但引发异常..百胜命令无法正常工作使用红帽
$ yum install java-1.6.0-openjdk
Loading "rhnplugin" plugin
Loading "security" plugin
Loading "installonlyn" plugin
**This system is not registered with RHN.**
RHN support will be disabled.
plz帮助即时通讯新的Linux ..
你的错误是simmilar一个在这个环节中描述：http://flashdba.com/2012/10/08/this-system-is-not-registered-with-uln-rhn/ – Tucker 2013-02-13 06:42:27