update(8) System Manager's Manual update(8) Name update - periodically update the super block Syntax /etc/update [ seconds ] Description The program executes the primitive every 30 seconds. This insures that the file system is fairly up to date in case of a crash. This com- mand should not be executed directly. Rather, it should be executed out of the initialization shell command file. Options seconds Changes the sync period from the default of 30 seconds to a period between 10 and 600 seconds. The seconds argument is a whole number between 10 and 600. See Also sync(1), sync(2), init(8), rc(8), update(8)