This permission represents access to a file or directory.
A FilePermission consists of a file url and a set of actions valid for that url.
The path of the file url that ends in "/*" indicates all the files and
directories contained in that directory. A path that ends with "/-"
indicates (recursively) all files and subdirectories contained in that
directory. A file url string consisting of the special token
"<<ALL FILES>>" matches any file.
Note: A file url string consisting of a single "*" indicates all the files
in the current directory, while a string consisting of a single "-" indicates
all the files in the current directory and (recursively) all files and
subdirectories contained in the current directory.
The actions to be granted is a list of one or more comma-separated keywords.
The possible keywords are "read", "write",
"execute", and "delete".
Their meaning is defined as follows:
read -- read permission
write -- write permission
execute -- execute permission
delete -- delete permission
The actions string is processed case-insensitive.
@attention
Be careful when granting FilePermissions. Think about the implications of
granting read and especially write access to various files and directories.
The "<<ALL FILES>>" permission with write action is
especially dangerous. This grants permission to write to the entire file system.
