a2server/scripts/a2server-7-console.txt

#! /bin/bash
# vim: set tabstop=4 shiftwidth=4 expandtab filetype=sh:

# --- Ubuntu Server console optimizaton (optional)

# This script helps when running on the Linux console within the VM.

function askYesNo()
# Ask a yes/no question of the user, with potential default
# arg1: Prompt text
# arg2: Default; 0 for yes, 1 for no, anything else for no default
# arg3: Info text for the user
# returns: 0 for yes, 1 for no
{
    local default

    case "$2" in
        0) default="y" ;;
        1) default="n" ;;
        *) default="" ;;
    esac

    if [ -n "$autoAnswerDefault" -a -n "$default" ]; then
        return $2
    fi

    if [ -n "$3" ]; then
        echo
        echo "$3"
        echo
    fi
    while :; do
        echo -n "$1 "
        [ -n "$default" ] && echo -n "[$default] "
        read
        case "$REPLY" in
            [Yy]*) return 0 ;;
            [Nn]*) return 1 ;;
            "") [ -n "$default" ] && return $2 ;;
            *) echo "Please answer yes or no." ;;
        esac
    done
}

echo

userPw=$(sudo grep "^$USER" /etc/shadow | cut -f 2 -d ':')
[[ $userPw == "$(echo 'apple2' | perl -e '$_ = <STDIN>; chomp; print crypt($_, $ARGV[0])' "${userPw%"${userPw#\$*\$*\$}"}")" ]] && isApple2Pw=1 || isApple2Pw=
[[ $userPw == "$(echo 'raspberry' | perl -e '$_ = <STDIN>; chomp; print crypt($_, $ARGV[0])' "${userPw%"${userPw#\$*\$*\$}"}")" ]] && isRaspberryPw=1 || isRaspberryPw=

password="your password"
[[ $isApple2Pw ]] && password="'apple2'"
[[ $isRaspberryPw ]] && password="'raspberry'"

isDebian=
[[ ( -f /etc/debian_version ) && ( $(cut -c 1-2 < /etc/debian_version) == "7." ) && ( $(uname -m) == "i686" ) ]] && isDebian=1

if [[ $isDebian ]]; then
    if { lspci 2> /dev/null | grep -q VirtualBox; }; then
        echo "A2SERVER: Disabling VirtualBox console screen blanking..."
        sudo sed -i 's/^BLANK_DPMS=off/BLANK_DPMS=on/' /etc/kbd/config
        sudo sed -i 's/^BLANK_TIME=[^0].$/BLANK_TIME=0/' /etc/kbd/config
        sudo /etc/init.d/kbd restart &> /dev/null
        sudo /etc/init.d/console-setup restart &> /dev/null
    fi
fi

# check that we're on Ubuntu
if [[ $(lsb_release -d 2> /dev/null | grep Ubuntu) ]]; then

    # don't do any of this if we're logged in via SSH
    if [[ $SSH_CLIENT || $REMOTEHOST ]]; then
        echo "A2SERVER: Logged in via SSH,not performing console optimization."
        echo "Run setup from the console if you want to optimize the console."
    else

        # if we've already done this stuff, don't do it again
        if [[ ! -x /etc/update-motd.d/10-help-text ]]; then

            echo "A2SERVER: Ubuntu console has already been optimized."
        else
            askYesNo "Do you want to optimize the Ubuntu console?" 0 \
"Ubuntu console optimization for use in a virtual machine will:
- show the default username/password on the login screen
- remove the documentation URL and system statistics shown after login
- ensure the screen clears before showing the login prompt
- prevent the screen from dimming after 10 minutes (once logged in)
- eliminate a harmless but annoying startup error about piix_smbus
- fix an Ubuntu 10.04 issue with slow scrolling"

            if [ $? -eq 0 ]; then

                echo "A2SERVER: Optimizing console..."

                # remind the user how to log in (we're going for functionality here, not security)
                if [[ ! $(grep $USER\/$password /etc/issue) ]]; then
                    sudo sed -i '/^Log in with.*$/d' /etc/issue
                    echo "Log in with '$USER' / '$password'." | sudo tee -a /etc/issue > /dev/null
                    echo | sudo tee -a /etc/issue > /dev/null
                fi

                # If after logging in, you don't like the documentation URL and
                # system info (or an error about it) being displayed, type:
                sudo chmod -x /etc/update-motd.d/10-help-text
                sudo chmod -x /etc/update-motd.d/50-landscape-sysinfo

                # If the screen doesn't clear for login after the boot messages, and
                # you'd like it to, type:
                sudo sed -i 's/X_DEFAULT=""/X_DEFAULT="quiet"/g' /etc/default/grub
                sudo update-grub

                # If you see a piix4_smbus error on startup, it is harmless, but if you
                # want to eliminate it, type:
                echo -e '\nblacklist i2c_piix4' \
                    | sudo tee -a /etc/modprobe.d/blacklist.conf > /dev/null
                sudo update-initramfs -u -k all

                # If you want to prevent the Ubuntu screen from going blank after ten
                # minutes of inactivity (once you are logged in), type:
                echo -e \
                    '\n[[ $SSH_CLIENT || $REMOTEHOST ]] || setterm -blank 0 -powersave off -powerdown 0' \
                    | sudo tee -a /etc/profile > /dev/null
                setterm -blank 0 -powersave off -powerdown 0

                # (note: These next lines addresses an issue only for Ubuntu 10.04.)
                # Type "ps aux" and press return. If you see slow text scrolling, type:
                if [[ "$(lsb_release -rs 2> /dev/null)" == "10.04" ]]; then
                    echo -e '\nblacklist vga16fb' \
                        | sudo tee -a /etc/modprobe.d/blacklist-framebuffer.conf > /dev/null
                    if [[ ! $SSH_CLIENT ]]; then
                        echo "Restarting now is recommended. To resume setup, log back"
                        echo -n "in, press up-arrow, and press return. Restart now? "
                        read; R=${REPLY:0:1}
                        [[ $R != "y" ]] && [[ $R != "Y" ]] || sudo shutdown -r now
                    fi
                fi
            fi
        fi
    fi
fi