1、执行yum list --showduplicate | grep java-1.8 命令，查找所有1.8的jdk包
yum list --showduplicate | grep java-1.8
java-1.8.0-openjdk.x86_64 1:1.8.0.222.b10-1.el7_7 @updates
java-1.8.0-openjdk-devel.x86_64 1:1.8.0.222.b10-1.el7_7 @updates
java-1.8.0-openjdk-headless.x86_64 1:1.8.0.222.b10-1.el7_7 @updates
java-1.8.0-openjdk.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-accessibility.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-accessibility.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-accessibility.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-accessibility.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-accessibility-debug.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-accessibility-debug.x86_64
java-1.8.0-openjdk-
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accessibility-debug.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-accessibility-debug.x86_64
java-1.8.0-openjdk-debug.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-debug.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-debug.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-debug.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-demo.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-demo.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-demo.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-demo.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-demo-debug.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-demo-debug.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-demo-debug.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-demo-debug.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-devel.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-devel.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-devel.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-devel.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-devel-debug.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-devel-debug.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-devel-debug.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-devel-debug.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-headless.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-headless.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-headless.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-headless.x86_64 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-headless-debug.i686 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-headless-debug.x86_64 1:1.8.0.222.b03-1.el7 base
java-1.8.0-openjdk-headless-debug.i686 1:1.8.0.222.b10-1.el7_7 updates
java-1.8.0-openjdk-headless-debug.x86_64 1:1.8.0.222.b10-1.el7_7 updates
