我将Oracle的Java安装到我的CentOS Linux release 7.0.1406 (Core) ：
[alexus@wcmisdlin02 Desktop]$ rpm -q jdk1.8.0_25-1.8.0_25-fcs jdk1.8.0_25-1.8.0_25-fcs.x86_64 [alexus@wcmisdlin02 Desktop]$
然而， alternatives却没有看到：
[alexus@wcmisdlin02 Desktop]$ sudo alternatives --config java There are 2 programs which provide 'java'. Selection Command ----------------------------------------------- *+ 1 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.71-2.5.3.1.el7_0.x86_64/jre/bin/java 2 /usr/lib/jvm/jre-1.6.0-openjdk.x86_64/bin/java Enter to keep the current selection[+], or type selection number:
我有点困惑如何使用alternatives --install行动，有人可以给我一个手吗？
提前致谢！
我使用这个步骤安装了java jre，你可以为jdk做同样的步骤。
tar xvfz jre-8u25-linux-i586.tar.gz mv jre1.8.0_25/ /opt/ usage: alternatives --install <link> <name> <path> <priority> alternatives --install /usr/bin/java java /opt/jre1.8.0_25/bin/java 2 alternatives --config java There are 2 programs which provide 'java'. Selection Command ----------------------------------------------- *+ 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java 2 /opt/jre1.8.0_25/bin/java