permission bits meaning in English

都有一组许可位

One alternative is setting the suid and the sgid permission bits for a file
一替代选择正在置位suid和为一个文件sgid许可位元。
The state of the current permission , represented by a bitwise or combination of any permission bits defined by
所定义的任何权限位的按位“或”组合来表示。
Individual permission bits can be determined by performing an and operation against this value and checking for nonzero
可通过对此值进行and运算并检查非零来确定各个权限位。
When performing operations on a file s meta - information , such as changing its owner , stat - ing the file , or changing its permission bits , first open the file and then use the operations on open files
当对文件的元信息进行操作时（比如修改它的所有者、对文件进行统计，或者修改它的权限位），首先要打开该文件，然后对打开的文件进行操作。
On most unix - like systems , permissions are only checked on open , so an attacker could open the file while the permission bits said it was ok , and keep the file open with those permissions indefinitely
在大部分类unix系统上，只在打开文件时才检查权限，所以，攻击者可以在权限位（ permission bit ）允许时打开文件，并使该文件一直处于打开状态，不管权限如何改变。