Mac OS X provides a one-stop command for viewing and setting several OS configuration items. The systemsetup command is found at /usr/sbin/systemsetup.
Running the command:
man systemsetup
in the Terminal application will return a full listing of the options available in this command. This script uses the systemsetup command to configure a target system to use a specified network time server. The script, as written, is intended for use with The Casper Suite. Replacing $4 with a static value or using another method of passing a value would be necessary if you are not using The Casper Suite.
#!/bin/bash
##### HEADER BEGINS #####
# scr_sys_setNTP.bash
#
# Created 20090627 by Miles A. Leacy IV
# miles.leacy@themacadmin.com
# Modified 20090627 by Miles A. Leacy IV
# Copyright 2009 Miles A. Leacy IV
#
# This script may be copied and distributed freely as long as this header
# remains intact.
#
# This script is provided “as is”. The author offers no warranty or
# guarantee of any kind.
# Use of this script is at your own risk. The author takes no responsibility
# for loss of use,
# loss of data, loss of job, loss of socks, the onset of armageddon, or any
# other negative effects.
#
# Test thoroughly in a lab environment before use on production systems.
# When you think it’s ok, test again. When you’re certain it’s ok, test
# twice more.
#
# This script sets a Mac OS X system to use a network time server specified
# by the value passed in the $4 parameter by the Casper Suite.
# Run as an “at reboot” script when imaging with Casper, making sure to type
# double-check the serial in the script parameters before imaging.
#
##### HEADER ENDS #####
systemsetup -setusingnetworktime on -setnetworktimeserver $4
#!/bin/bash ##### HEADER BEGINS ##### # scr_sys_setNTP.bash # # Created 20090627 by Miles A. Leacy IV # miles.leacy@themacadmin.com # Modified 20090627 by Miles A. Leacy IV # Copyright 2009 Miles A. Leacy IV # # This script may be copied and distributed freely as long as this header # remains intact. # # This script is provided "as is". The author offers no warranty or # guarantee of any kind. # Use of this script is at your own risk. The author takes no responsibility # for loss of use, # loss of data, loss of job, loss of socks, the onset of armageddon, or any # other negative effects. # # Test thoroughly in a lab environment before use on production systems. # When you think it's ok, test again. When you're certain it's ok, test # twice more. # # This script sets a Mac OS X system to use a network time server specified # by the value passed in the $4 parameter by the Casper Suite. # Run as an "at reboot" script when imaging with Casper, making sure to type # double-check the serial in the script parameters before imaging. # ##### HEADER ENDS ##### systemsetup -setusingnetworktime on -setnetworktimeserver $4 exit 0
The Mac Admin 
Hi,
i would like to thank you for this post – somehow i missed that command (systemsetup) until today while it looks very promising for ard-scripts.
Thumbs up for your current posts which are all interessting … would be great to see if you continue your work in this blog.
Greetings
fidel
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