(sub get_number {
open(NUMBER,">>data.txt");
flock (NUMBER, 2);Do blah blah blah close (NUMBER); closing a file automatically removes the lock?? or should I have to unlock it by placing flock (NUMBER, 8); close (NUMBER); My second question is how I can delay the execution of a script (If two users trying to execute the same script) for 30 sec by using sleep function? and If I implement sleep function in my script ..... Do I really need to use 'flock' in my script or there is no need then. Thanks.
