I need to install an application to number of Macs. Is there any way i can do it over the network or any other advise on this.
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There are a number of ways to do this. I use Apple's "Remote Desktop" application which allows you to both copy files and install packages (in addition to other management tasks) to multiple computers.
Here is Apple's page on the software: http://www.apple.com/remotedesktop/
The management software you pay for runs on one Mac. The client is already part of the Mac OS and you just have to turn it on -- System Preferences -> Sharing then check "Remote Management". You can allow access from any user or specified users. I normally limit access to the local admin user on the computer. In the Remote Desktop application you add the computer to a list of managed computers and in that process you authenticate as the user under which you will be administering the computer. If you have a lot of computers to manage, you can create lists of computers in addition to the big list of all computers.