Currently in my Mac I have these JAVA versions:
目前在我的Mac上我有这些JAVA版本：
MyMac$ cd /Library/Java/JavaVirtualMachines
MyMac $ cd / Library / Java / JavaVirtualMachines
$ ls -la
$ ls -la
total 0
总共0
drwxr-xr-x 4 root wheel 136 17 Oct 11:21 .
drwxr-xr-x 4根轮136 10月11日11:21。
drwxrwxr-x 5 root wheel 170 17 Oct 11:21 ..
drwxrwxr-x 5根轮170 10月11日11:21 ..
drwxr-xr-x 3 root wheel 102 14 Jul 22:52 1.6.0.jdk
drwxr-xr-x 3根轮102 14 Jul 22:52 1.6.0.jdk
drwxr-xr-x 3 root wheel 102 17 Oct 11:16 jdk1.7.0_79.jdk
drwxr-xr-x 3根轮102 10月11日11:16 jdk1.7.0_79.jdk
What I am trying to do is change the symbolic link to point to JDK 7 instead of JDK 6:
我想要做的是将符号链接更改为指向JDK 7而不是JDK 6：
$cd /System/Library/Frameworks/JavaVM.framework/Versions
$ cd /System/Library/Frameworks/JavaVM.framework/Versions
$ls -la
$ ls -la
drwxr-xr-x 11 root wheel 374 17 Oct 11:21 .
drwxr-xr-x 11根轮374十月11:21。
drwxr-xr-x 10 root wheel 340 17 Oct 11:21 ..
drwxr-xr-x 10根轮340 10月11日11:21 ..
lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.4 -> CurrentJDK
lrwxr-xr-x 1根轮10 17十一月11:21 1.4 - > CurrentJDK
lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.4.2 -> CurrentJDK
lrwxr-xr-x 1根轮10 17 Oct 11:21 1.4.2 - > CurrentJDK
lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.5 -> CurrentJDK
lrwxr-xr-x 1根轮10 17十一月11:21 1.5 - > CurrentJDK
lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.5.0 -> CurrentJDK
lrwxr-xr-x 1根轮10 17 Oct 11:21 1.5.0 - > CurrentJDK
lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.6 -> CurrentJDK
lrwxr-xr-x 1根轮10 17 Oct 11:21 1.6 - > CurrentJDK
lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.6.0 -> CurrentJDK
lrwxr-xr-x 1根轮10 17 Oct 11:21 1.6.0 - > CurrentJDK
drwxr-xr-x 8 root wheel 272 17 Oct 11:21 A
drwxr-xr-x 8根轮272 17 Oct 11:21 A
lrwxr-xr-x 1 root wheel 1 17 Oct 11:21 Current -> A
lrwxr-xr-x 1根轮1 17十一月11:21当前 - > A.
lrwxr-xr-x 1 root wheel 52 17 Oct 11:21 CurrentJDK -> /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents
lrwxr-xr-x 1根轮52 17十月11:21 CurrentJDK - > /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents
Unfortunately I cannot remove the link. I am getting an operation not permitted error:
不幸的是我无法删除链接。我得到一个不允许的操作错误：
sudo rm CurrentJDK
sudo rm CurrentJDK
rm: CurrentJDK: Operation not permitted
rm：CurrentJDK：不允许操作
Any ideas?
有任何想法吗？
Thank you!
谢谢！
2 个解决方案
#1
4
El Capitan new feature: System Integrity Protection (SIP), was the cause of this problem. I had to disable SIP first.
El Capitan新功能：系统完整性保护（SIP），是导致此问题的原因。我必须先禁用SIP。
Follow these steps to disable SIP:
请按照以下步骤禁用SIP：
Restart your Mac. Before OS X starts up, hold down Command-R and keep it held down until you see an Apple icon and a progress bar. Release. This boots you into Recovery. From the Utilities menu, select Terminal. At the prompt type exactly the following and then press Return:
重启你的Mac。在OS X启动之前，按住Command-R并保持按住直到看到Apple图标和进度条。发布。这会引导您进入Recovery。从Utilities菜单中，选择Terminal。在提示符下键入以下内容，然后按Return键：
csrutil disable
Terminal should display a message that SIP was disabled. From the apple menu, select Restart. You can re-enable SIP by following the above steps, but using csrutil enable instead.
终端应显示SIP已禁用的消息。从apple菜单中，选择Restart。您可以按照上述步骤重新启用SIP，但请改用csrutil enable。
#2
1
If you're running OS X 10.11 (El Capitan), there is a new feature called "Rootless" which prevents editing of files under /System/ except by installers and the like. You may be able to solve whatever problem is requiring you to update the CurrentJDK symlink just by setting the JAVA_HOME environment variable to /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
如果您正在运行OS X 10.11（El Capitan），则会出现一个名为“Rootless”的新功能，该功能会阻止编辑/ System /下的文件，除非安装程序等。您可以通过将JAVA_HOME环境变量设置为/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home来解决任何需要您更新CurrentJDK符号链接的问题。
If you truly want to modify that /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK symlink, you will likely have have to disable Rootless mode. You could also try running the Java 7 installer again, though I'm not certain that this will work
如果您真的想要修改/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK符号链接，则可能必须禁用无根模式。您也可以尝试再次运行Java 7安装程序，但我不确定这是否可行
More information on the Rootless feature can be found here: https://apple.stackexchange.com/questions/193368/what-is-the-rootless-feature-in-el-capitan-really
有关Rootless功能的更多信息，请访问：https：//apple.stackexchange.com/questions/193368/what-is-the-rootless-feature-in-el-capitan-really
#1
4
El Capitan new feature: System Integrity Protection (SIP), was the cause of this problem. I had to disable SIP first.
El Capitan新功能：系统完整性保护（SIP），是导致此问题的原因。我必须先禁用SIP。
Follow these steps to disable SIP:
请按照以下步骤禁用SIP：
Restart your Mac. Before OS X starts up, hold down Command-R and keep it held down until you see an Apple icon and a progress bar. Release. This boots you into Recovery. From the Utilities menu, select Terminal. At the prompt type exactly the following and then press Return:
重启你的Mac。在OS X启动之前，按住Command-R并保持按住直到看到Apple图标和进度条。发布。这会引导您进入Recovery。从Utilities菜单中，选择Terminal。在提示符下键入以下内容，然后按Return键：
csrutil disable
Terminal should display a message that SIP was disabled. From the apple menu, select Restart. You can re-enable SIP by following the above steps, but using csrutil enable instead.
终端应显示SIP已禁用的消息。从apple菜单中，选择Restart。您可以按照上述步骤重新启用SIP，但请改用csrutil enable。
#2
1
If you're running OS X 10.11 (El Capitan), there is a new feature called "Rootless" which prevents editing of files under /System/ except by installers and the like. You may be able to solve whatever problem is requiring you to update the CurrentJDK symlink just by setting the JAVA_HOME environment variable to /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
如果您正在运行OS X 10.11（El Capitan），则会出现一个名为“Rootless”的新功能，该功能会阻止编辑/ System /下的文件，除非安装程序等。您可以通过将JAVA_HOME环境变量设置为/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home来解决任何需要您更新CurrentJDK符号链接的问题。
If you truly want to modify that /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK symlink, you will likely have have to disable Rootless mode. You could also try running the Java 7 installer again, though I'm not certain that this will work
如果您真的想要修改/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK符号链接，则可能必须禁用无根模式。您也可以尝试再次运行Java 7安装程序，但我不确定这是否可行
More information on the Rootless feature can be found here: https://apple.stackexchange.com/questions/193368/what-is-the-rootless-feature-in-el-capitan-really
有关Rootless功能的更多信息，请访问：https：//apple.stackexchange.com/questions/193368/what-is-the-rootless-feature-in-el-capitan-really