通过ls -l java查看,java命令指向
/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java
但是我执行/usr/libexec/java_home -V 显示如下:
Matching Java Virtual Machines (3):
1.7.0_79, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
1.6.0_65-b14-468, x86_64: "Java SE 6" /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_65-b14-468, i386: "Java SE 6" /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
之前查过很多网站,/LibraryL/java...下应该改是第三方JAVA的安装目录,为啥/usr/bin/java不指向这个目录下,而指向/System/Library下呢?
另外我再本地同时装了1.6和1.7,通过修改JAVA_HOME切换版本后,发现/usr/bin/java的指向始终没变,这个/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java文件到底是如何实现自动指向的呢?