File Utilities

• int remove(char *filename); removes the named file.

• int rename(char *from, char *to); renames the file named from to the file named to.

• We've already seen int fflush(FILE *), which flushes (clears the i/o buffer) on the passed file.

• int rmdir(const char *dirname); removes the named directory.

• All of the above routines return 0 on sucess, and non-0 on error. They all set errno to specify what error occurred.