umask

The system uses the umask value to reduce the originally requested permissions .

系统使用umask值来减少原始请求的权限。

Use the umask command to set a umask as well as display one .

使用umask命令设置一个unmask并显示。

Remember that the umask specifies which permissions should not be granted .

请记得，umask指定了那个权限不被授予。

Generally , this means you need to use umask and / or open 's parameters to limit initial access to just the user and maybe the user group .

通常，这表示您需要使用umask和/或打开参数，将初始的访问权限局限于用户，也可以局限于用户所在的组。

Use the-S option to display the umask symbolically , in a form that shows which are the permissions that are allowed .

使用-S选项来从符号上显示umask，以显示哪个权限被允许的形式。

Programs have many other inputs , such as the current directory , signals , memory maps , System V IPC , the umask , and the state of the filesystem .

程序有很多其他的输入，比如当前目录、信号、内存映射、SystemVIPC、umask、文件系统状态。

So , if you would like to keep your files more private and disallow all group or other access to newly created files , you would use a umask value of0077 .

所以，如果您想要保持文件更专有，并且不允许所有组或者其他人访问新创建的文件，就是可以使用umask值0077。

However , this permissive creation is affected by a umask value , which specifies what permissions a user does not want to grant automatically to newly created files or directories .

但是，这个宽松的创建会受到umask值的影响，这个值指明了用户不想自动授予新创建的文件或者目录什么权限。

Some implementations of mkstemp ( 3 ) don 't set the umask ( 2 ) to a limited value , so it 's wise to call umask ( 2 ) first to force the file to a restrictive value .

mkstemp（3）的一些实现并没有将umask（2）设置为一个受限的值，所以聪明的做法是先调用umask（2）来强制将文件设置为受限的值。