Gentoo-Installer.sh

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.

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echo "Loading additional kernel modules"

if [ modprobe8139too ]; then
    modprobe8139too
else
    echo "modprobe8139too failed to load....exiting"
    exit 1
fi


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echo "Please enter root password"

passwd

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echo "Adding user account"

if [ $(id -u) -eq 0 ]; then
    read -p "Enter username : " username
    read -s -p "Enter password : " password
    egrep "^$username" /etc/passwd >/dev/null
    if [ $? -eq 0 ]; then
        echo "$username exists!"
        exit 1
    else
        pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
        useradd -m -G $pass $username
        [ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
    fi
else
    echo "Only root may add a user to the system"
    exit 2
fi

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while true; do
    read -p "Would you like to start the SSH daemon?" yn
    case $yn in
        [Yy]* ) /etc/init.d/sshd start;;
        [Nn]* ) exit;;
    esac
done

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echo "Configuring network with net-setup eth0"

net-setup eth0

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#Using Dynamic Host Control Protocol for network configuration

#dhcpd eth0

#If you're system administrator requires hostname and domainname to be
#provided by the DHCP server use the following command instead

#dhcpcd -HD eth0

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echo "Creating 2MB partition for GRUB2"

parted -a optimal /dev/sda
mklabel gpt
unit mib
mkpart primary 1 3
name 1 grub
set 1 bios_grub on
print
sleep 5

echo "Creating boot partition 128MB"

mkpart primary 3 131
name 2 boot
mkpart primary 131 643
name 3 swap
mkpart primary 643 -1
name 4 rootfs
set 2 boot on   #parted automatically switches to EFI when the boot option
                #is set on the partition
parted print
sleep 5

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echo "Creating swap"

mkswap /dev/sda3

echo "Activating swap"

swapon /dev/sda3

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echo "Mounting drives"
mount /dev/sda4 /mnt/gentoo
mkdir /mnt/gentoo/boot
mount /dev/sda2 /mnt/gentoo/boot
#chmod 1777 /mnt/gentoo/ tmp    #If /tmp/ resides on seperate partition
                                #This changes its permissions AFTER
                                #mounting.

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echo "Installing tarball is the date correct?"

date
sleep 5

cd /mnt/gentoo
echo "Select download stage"
links https://www.gentoo.org/downloads/mirrors/
tar xvjpf stage3-*.tar.bz2 --xattrs
echo "Update the /mnt/gentoo/etc/portage/make.conf file to match personal preference and save"
nano -w /mnt/gentoo/etc/portage/make.conf

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echo "Installing base system"
mirrorselect -i -o >> /mnt/gentoo/etc/portage/make.conf
mkdir /mnt/gentoo/etc/portage/repos.conf
cp /mnt/gentoo/usr/share/portage/config/repos.conf /mnt/gentoo/etc/portage/repos.conf/gentoo.conf
cp -L /etc/resolv.conf /mnt/gentoo/etc/
mount -t proc proc /mnt/gentoo/proc
mount --rbind /sys /mnt/gentoo/sys
mount --make-rslave /mnt/gentoo/sys
mount --rbind /dev /mnt/gentoo/dev
mount --make-rslave /mnt/gentoo/dev
chroot /mnt/gentoo /bin/bash
source /etc/profile
export PS1="(chroot) $PS1"
emerge-webrsync
emerge --sync
eselect news list
eselect news read
eselect profile list
eselect profile set 2
eselect profile list
eselect profile set 5
eselect profile set default/linux/amd64/13.0/systemd
eselect profile list
emerge --ask --update --deep --newuse @world
emerge --info | grep ^USE
less /usr/portage/profiles/use.desc
nano -w /etc/portage/make.conf
ls /usr/share/zoneinfo
echo "Europe/London" > /etc/timezone
emerge --config sys-libs/timezone-data
echo "en_GB.UTF-8 UTF-8" > /etc/locale.gen
env-update && source /etc/profile && export PS1="(chroot) $PS1"

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echo "Done installing base system its now up to you to manually configure the kernel and optimise it to your needs"
sleep 3
echo "Good luck!"
links https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Kernel

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