Users and groups work essentially the same way in Linux that they do in Windows, except that only one group can be associated with a system resource.
在Linux中管理用户和组的方式与Windows中本质上是相同的，但是Linux中只能有惟一的组可以关联到一个系统资源。
Listing 3 shows you how to do this on Fedora Core 4 Linux using the groupadd command; other UNIX systems have similar utilities or detailed instructions for adding new groups and users.
清单3显示了如何在Fedora Core4Linux上使用groupadd命令进行此任务；其他UNIX系统具有用于添加新组和用户的类似实用工具或详细说明。
On Linux systems, where users do not have private groups the umask normally defaults to 0022, which removes group and other write permission from new files.
在Linux系统上，用户没有专用组的的情况下，umask通常默认为0022，它可以从新文件中删除组和其他写权限。
On Linux systems, where users do not have private groups the umask normally defaults to 0022, which removes group and other write permission from new files.
在Linux系统上，用户没有专用组的的情况下，umask通常默认为0022，它可以从新文件中删除组和其他写权限。
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