Networksetup script cannot commit changes to network database

Question

I use a shell script to configure my machines ip address quickly. This script works perfectly on 10.8 and 10.7. when i upgraded to 10.9, I can't use this script anymore. the system promt :
networksetup -setmanual $2 $3 $4 $5
** Error: Unable to commit changes to network database.
however, if I type the command in the terminal it is OK. But not in a sh script.
I tried wait, sleep after the command in the script both doesn't work.
any suggestions?
#set IP addr
#networksetup -listallnetworkservices
if [ "$1" != "nochange" ]
then
systemsetup -setcomputername $1
wait
systemsetup -setlocalsubnetname $1
wait
#defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server.plist NetBIOSName $1
fi
if [ "$3" != "nochange" ]
then
networksetup -setmanual $2 $3 $4 $5
wait
fi
if [ "$6" != "nochange" ]
then
networksetup -setdnsservers $2 $7
wait
fi
networksetup -setsearchdomains $2 cn.oracle.com
wait
networksetup -setautoproxyurl $2 http://wpad/wpad.dat
wait

Answer 1

if you want to disable service, you can write script and put it to /Library/Startupitems/yourscriptname/
this is a folder you must create ,and your script name must the same as folder name. and you also need a plist file in the same folder
you can search for keyword "Startupitems"
and i am using this to modify ip address when start. the script will run under root privilige
and if you want to run in terminal, you must use
sudo networksetup ....
or sudo -i
networksetup ...
in addition
add sleep several seconds after running this cmd seems solve this problem.
I think the system need time to make change