In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.

NSFileManager *fm = [NSFileManager defaultManager];
 
[fm createFileAtPath:@"output.txt" contents:[NSData data] attributes:nil];
// Pre-OS X 10.5
[fm createDirectoryAtPath:@"docs" attributes:nil];
// OS X 10.5+
[fm createDirectoryAtPath:@"docs" withIntermediateDirectories:NO attributes:nil error:NULL];