How does FileLock work?

Question

I\'ve been trying to use FileLock to get exclusive access to a file in order to:

• delete it
• rename it
• write to it

Answer 1

The delete and rename operations are performed by the operating system and are atomic (on most operating systems), so no locking is required.

To write a string to file, it would be simpler to write to a temporary file first (e.g. foo.tmp) and then rename it once it is ready.