How do I add a PPA in a shell script without user input?

Question

Basically, I want to run add-apt-repository ppa:(whatever) without the "press Enter to continue" prompt. How would I do this?

Essentially, I want to deploy adding a repository in a shell script without user input.

Answer 1

The script goes like this

#! /bin/sh
sudo add-apt-repository ppa:(Your ppa here) -y

BTW you will still have to enter password.

Answer 2

Of course if you really want to impress R2D2, you can avoid the password prompt as well. Prepare your user account to look like this:

you@yourhost:~$
you@yourhost:~$ cat /home/you/.bash_login;
# ASK_PASS service for you «begins»
export SUDO_ASKPASS="/home/you/.ssh/.supwd.sh";
# ASK_PASS service for you «ends»
you@yourhost:~$
you@yourhost:~$
you@yourhost:~$ cat /home/you/.ssh/.supwd.sh;
#!/bin/sh
echo '(Your sudoer password here)';
you@yourhost:~$
you@yourhost:~$
you@yourhost:~$ ls -l .ssh/.supwd.sh 
-rwx------ 1 you you 35 Mar 31 10:28 .ssh/.supwd.sh
you@yourhost:~$ 
you@yourhost:~$
you@yourhost:~$ cat ./tmp.sh 
#!/bin/sh
. /home/you/.bash_login;  # 'source' bash_login to declare the ask_pass script
sudo -A add-apt-repository ppa:(Your ppa here) -y;
# The flag '-A' lets you add the repo without sudo demanding your password.
#
you@yourhost:~$