java.io.FileNotFoundException：（不允许操作）./keytool -mac osx上的导入错误（el capitan）-Java 6

尝试将CA Cert导入我的Java 6信任库，并遇到此错误：

./keytool -v -import -trustcacerts -alias Rapidssl -file /Users/spurr/Desktop/rapidssl.cer -keystore /System/Library/Java/Support/CoreDeploy.bundle/Contents/Home/lib/security/cacerts
Enter keystore password:
Certificate was added to keystore
[Storing /System/Library/Java/Support/CoreDeploy.bundle/Contents/Home/lib/security/cacerts]
keytool error: java.io.FileNotFoundException: /System/Library/Java/Support/CoreDeploy.bundle/Contents/Home/lib/security/cacerts (Operation not permitted)
java.io.FileNotFoundException: /System/Library/Java/Support/CoreDeploy.bundle/Contents/Home/lib/security/cacerts (Operation not permitted)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.(FileOutputStream.java:194)
at java.io.FileOutputStream.(FileOutputStream.java:84)
at sun.security.tools.KeyTool.doCommands(KeyTool.java:902)
at sun.security.tools.KeyTool.run(KeyTool.java:172)
at sun.security.tools.KeyTool.main(KeyTool.java:166)

我也以root用户身份运行该命令，因此我认为我可以访问该cacerts密钥库位置。使用Java 6。