Using script to manage host file

I need a script that I can run to append to add multiple entries to the host files on my network.

The current script I use is 

REM Appendhost.bat
echo 192.168.30.1 server1 >> %SYSTEMDRIVE%\Windows\System32\Drivers\Etc\Hosts
echo 192.168.35.2 server2 >> %SYSTEMDRIVE%\Windows\System32\Drivers\Etc\Hosts
echo 192.168.40.3 server3 >> %SYSTEMDRIVE%\Windows\System32\Drivers\Etc\Hosts

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Up until we started using windows 7 this script functioned. After we updated to windows 7 however anytime this is run it appears to overwrite the entire file and only leave a blank file with the entry
192.168.40.3 server3

Entries 1 & 2 do not appear
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ITguy565Asked:
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bigeven2002Commented:
Hello,

Not sure how to fix the script above, but you can try the PowerShell method alternatively:

http://gallery.technet.microsoft.com/scriptcenter/51ea84d2-717f-467a-8153-cf9bd02573ff
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Bill PrewCommented:
As long as you are using >> rather than > I don't see any reason why you would get the results you mentioned.

Try copying the hosts file to a different location, say c:\temp, then adjust the BAT script to reference that directory, and see if you have the same problem when you run it.

~bp
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ITguy565Author Commented:
Experts,

I was able to figure out what the issue was with my script. My problem was not with my script above. It works fine as long as you run it locally on each machine. When you attempt to push the same script out using our Kaseya managed service platform it appears that the >> was being treated as > and was causing our script to overwrite the files rather than append.

Thanks for your assistance and quick replies.
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