Describes POSIX file permissions, where the user, group, and others are each assigned read, write, and/or execute permissions.
The toString method provides a 9 character string where the first
three characters indicate user permissions, the next three group permissions,
and the final three others permissions. For example, rwxr-xr-- indicates
the owner has read, write and execute, the group as read and execute, and
others have read.
The value field encodes the permissions in the lowest 9 bits of an integer.
bits 8-6 indicate read, write, and execute for the owner, 5-3 for the group,
and 2-0 for others. rwxr-xr-- has the integer value 111101100 = 492.
The toOctalString method returns the a 3 digit string, where the first
character indicates read, write and execute for the owner, the second digit
for the group, and the third digit for others. rwxr-xr-- has the octal string
754.
Constructors from strings, octal strings, and integers, as well as explicitly enumerating permissions, are provided in the companion.
- Companion:
- object