A wrapper for the POSIX unlink function.
The unlink function deletes a name from the filesystem. If this was the last link to the file and no processes have it opened, the diskspace occupied by the file is freed.
See your C library manual for more details about unlink. Note that on Windows, it is in general not possible to delete files that are open to some process, or mapped into memory.
a pathname in the GLib file name encoding (UTF-8 on Windows)
0 if the name was successfully deleted, -1 if an error occurred