When you run various commands and scripts in OS X, you may need to first authenticate the actions you are taking as administrator. While some commands include options for providing authentication, generally you will run the “sudo” command as a precursor to your desired one, in order to promote the desired one to run with full administrative access privileges.
If you use “sudo,” you will still be working within the text-based environment of the Terminal, where you will see a prompt for your password and then not see any indication of the password as you type it. This is understood by those who are familiar with the Terminal; however, if you are writing a script that may require non-familiar users to authenticate, or if you just wish to use a cleaner looking interface, then you can have OS X authenticate the script using a standard password entry OS X dialogue box.
To do this you, can wrap your desired command in a small bit of AppleScript code, that will invoke the OS X GUI. In the following line, the command or script “some-command” will be executed after you authenticate:
do shell script "some-command" with administrator privileges
osascript -e "do shell script \"some-command\" with administrator privileges"
While you can run some complex commands and programs in authenticated form using this method, it may be best to use this for running an entire script, as opposed to individual commands. This is especially true given the layering of scripting languages and subsequent requirement for escaping quotes and other characters may become complicated.