解決Redhat 7 不能用yum安裝軟件

1.check yum在linux所安裝的包node #rpm -qa| grep yumpython yum-utils-1.1.31-24.el7.noarch yum-langpacks-0.4.2-3.el7.noarch yum-metadata-parser-1.1.4-10.el7.x86_64 yum-rhn-plugin-2.0.1-4.el7.noarch PackageKit

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