如何在MacOS中更改CurrentJDK符号链接 [英] How change CurrentJDK symbolic link in MacOS

问题描述

当前在我的Mac中，我具有以下JAVA版本:

Currently in my Mac I have these JAVA versions:

MyMac $ cd/库/Java/JavaVirtualMachines

MyMac$ cd /Library/Java/JavaVirtualMachines

$ ls -la

总计0

drwxr-xr-x 4根轮136 Oct 10:11.

drwxr-xr-x 4 root wheel 136 17 Oct 11:21 .

drwxrwxr-x 5根轮170 Oct 10:11 ..

drwxrwxr-x 5 root wheel 170 17 Oct 11:21 ..

drwxr-xr-x 3根轮102 Jul 07:52 1.6.0.jdk

drwxr-xr-x 3 root wheel 102 14 Jul 22:52 1.6.0.jdk

drwxr-xr-x 3根轮102 Oct 10:11 jdk1.7.0_79.jdk

drwxr-xr-x 3 root wheel 102 17 Oct 11:16 jdk1.7.0_79.jdk

我想做的是更改符号链接以指向JDK 7而不是JDK 6:

What I am trying to do is change the symbolic link to point to JDK 7 instead of JDK 6:

$ cd/System/Library/Frameworks/JavaVM.framework/Versions

$cd /System/Library/Frameworks/JavaVM.framework/Versions

$ ls -la

drwxr-xr-x 11根轮374 10月17日11:21.

drwxr-xr-x 11 root wheel 374 17 Oct 11:21 .

drwxr-xr-x 10根轮340 10月17日11:21 ..

drwxr-xr-x 10 root wheel 340 17 Oct 11:21 ..

lrwxr-xr-x 1根轮10 17 Oct 11:21 1.4-> CurrentJDK

lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.4 -> CurrentJDK

lrwxr-xr-x 1根轮10 Oct 10 11:21 1.4.2-> 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 1.5-> CurrentJDK

lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.5 -> CurrentJDK

lrwxr-xr-x 1根轮10 Oct 10 11:21 1.5.0-> CurrentJDK

lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.5.0 -> CurrentJDK

lrwxr-xr-x 1根轮10 Oct 10 11:21 1.6-> CurrentJDK

lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.6 -> CurrentJDK

lrwxr-xr-x 1根轮10 Oct 10 11:21 1.6.0-> CurrentJDK

lrwxr-xr-x 1 root wheel 10 17 Oct 11:21 1.6.0 -> CurrentJDK

drwxr-xr-x 8根轮272 10月17日11:21 A

drwxr-xr-x 8 root wheel 272 17 Oct 11:21 A

lrwxr-xr-x 1根轮1 Oct 10:17当前-> A

lrwxr-xr-x 1 root wheel 1 17 Oct 11:21 Current -> A

lrwxr-xr-x 1根齿轮52 Oct 10:11 CurrentJDK-> /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents

lrwxr-xr-x 1 root wheel 52 17 Oct 11:21 CurrentJDK -> /Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents

很遗憾，我无法删除该链接.我收到不允许的操作错误:

Unfortunately I cannot remove the link. I am getting an operation not permitted error:

sudo rm CurrentJDK

sudo rm CurrentJDK

rm:CurrentJDK:不允许操作

rm: CurrentJDK: Operation not permitted

有什么想法吗?

谢谢！

推荐答案

El Capitan的新功能:系统完整性保护(SIP)是导致此问题的原因.我必须先禁用SIP.

El Capitan new feature: System Integrity Protection (SIP), was the cause of this problem. I had to disable SIP first.

请按照以下步骤禁用SIP:

Follow these steps to disable SIP:

重新启动Mac. 在OS X启动之前，按住Command-R并按住不放，直到看到Apple图标和进度条.释放.这会引导您进入恢复状态. 从实用工具"菜单中，选择终端". 在提示符下，准确键入以下内容，然后按Return键:

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:

csrutil disable

终端应显示一条消息，说明SIP已被禁用. 从苹果菜单中，选择重新启动. 您可以按照上述步骤重新启用SIP，但改用csrutil enable.

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.

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