Passing default answers to apt-get package install questions?
Solution 1:
Use debconf's configuration preseeding.
Do a test install to get the values that you want:
root@test1:~# apt-get install mysql-server
..and set the root password when prompted during the install.
Then you can check what the debconf settings look like for what you just installed (you may need to install debconf-utils
):
root@test1:~# debconf-get-selections | grep mysql-server
mysql-server-5.5 mysql-server/root_password_again password
mysql-server-5.5 mysql-server/root_password password
mysql-server-5.5 mysql-server/error_setting_password error
mysql-server-5.5 mysql-server-5.5/postrm_remove_databases boolean false
mysql-server-5.5 mysql-server-5.5/start_on_boot boolean true
mysql-server-5.5 mysql-server-5.5/nis_warning note
mysql-server-5.5 mysql-server-5.5/really_downgrade boolean false
mysql-server-5.5 mysql-server/password_mismatch error
mysql-server-5.5 mysql-server/no_upgrade_when_using_ndb error
There's some noise there, but the important part is the password settings.
Then, for a fresh install, you can avoid the prompts completely by setting the password beforehand:
root@test2:~# echo "mysql-server-5.5 mysql-server/root_password_again password Som3Passw0rd" | debconf-set-selections
root@test2:~# echo "mysql-server-5.5 mysql-server/root_password password Som3Passw0rd" | debconf-set-selections
root@test2:~# apt-get install mysql-server
No prompts at all during that install.
Solution 2:
export DEBIAN_FRONTEND=noninteractive
apt-get -q -y install _packages_
Solution 3:
The debconf package contains debconf-show
:
debconf-show package