title: Add Entries to Hosts File
body: <p>I would like to create a bash script that I will run inside an administrator account. I want the script to backup the existing hosts file to the same directory with the file extension .original and then I want the script to add 3 pre-defined entries (specified within the scripts body) into the hosts file and maintain the existing formatting of the hosts file. How can I accomplish this without the user having to authenticate - I want the administrators password to be stored in the script and passed to sudo every time it requests escalation. Thank you.</p>