$info coreutils 'ls invocation'
1
1
Following the file mode bits is a single character that specifies
whether an alternate access method such as an access control list
applies to the file. When the character following the file mode
bits is a space, there is no alternate access method. When it is
a printing character, then there is such a method.
在文件权限位后面,附加有一个单字符。用来表示是否有一个
可替换的访问控制措施应用在这个文件上。例如,访问控制列表(ACL,access control list)。
当文件权限位后面附加的是一个空格时,表示系统没有可替换的访问控制措施。
当是一个可打印字符时,表示系统存在这样一个访问控制措施。
GNU ‘ls’ uses a ‘.’ character to indicate a file with an SELinux
security context, but no other alternate access method.
GNU的ls命令使用 ‘.’字符表示文件使用了SELinux安全上下文,
但是没有使用其他的访问控制措施。
A file with any other combination of alternate access methods is
marked with a ‘+’ character.
一个文件结合了其他访问控制措施,文件用‘+’字符标记 。(如:ACL)