许可功能(Permission Capabilities) chmod delete overwrite umask 允许或不允许执行指定功能的能力。依照预设值，允许所有的 使用者执行。
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如果您从 IBM 接受一个许可证文件以对附加功能解锁，那么您必须将新许可证文件的内容与已存在文件的内容相合并。
If you received a license file from IBM to unlock an additional feature, you must merge the content of the new license file with the existing one.
而系统用户则被赋予特定的角色，通过这些角色的赋予，用户可以获得适当的许可来执行系统功能。
The system users are then assigned particular role(s), and through these role(s) assignment(s) the users acquire appropriate permissions to perform system functions.
如果出于生产的目的需要什么产品，那么需要从ibm处购买单独的全功能许可证。
If any of the products are needed for production purposes, full-function licenses must be purchased separately from IBM.
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