#!/usr/bin/python import fcntl import time f = open('tolock','w') print( 'Acquisizione lock...' ) fcntl.lockf(f,fcntl.LOCK_EX) print( 'Lock acquisito' ) print( 'Sleep 10 sec...' ) time.sleep(10) print( 'Rilascio il lock...' ) fcntl.lockf(f,fcntl.LOCK_UN) print( 'Lock rilasciato' )