OSF

NAME

update − Periodically updates the superblock

SYNOPSIS

update

DESCRIPTION

The update command executes a sync system call every 30 seconds.  This ensures that the file system is up to date in the event of a system crash.  This command is provided as a script in /sbin. 

The cron program also provides the functionality of the update command.  The update shell script typically provides the following functionality:

#!/bin/sh
while true
do
    sync
    sleep 30
done &
exit 0

FILES

/usrsbin/update
Specifies the command path

RELATED INFORMATION

Commands:  cron(8), init(8), sync(8)

Functions:  sync(2)