Returns true if the given path exists and is a directory.

Returns true if the given path exists.

ExpandUser replaces the tilde (~) in a path into the current user's home directory.

Returns true if the given path exists and is a regular file.

Returns true if the given file can be opened for appending by the current user.

Returns true if the given path is a directory with items in it.

Returns true if the given path is a regular file, is executable by any user, and has a non-zero size.

Returns true if the given path is a regular file with a non-zero size.

Returns true if the given file can be opened for reading by the current user.

Returns true if the given file can be opened for writing by the current user.

Returns true if the given path exists and is a symbolic link.