Autotoo - Automated Gentoo Linux Installation Script

An automated installation script for Gentoo Linux that streamlines the setup process from disk partitioning through to a bootable system.

Autotoo is a bash script that automates the Gentoo Linux installation process. It handles disk partitioning, filesystem creation, stage3 extraction, system configuration, and bootloader installation with minimal user interaction.

• Automated disk partitioning with GPT layout (512MB EFI partition + Linux root)
• Filesystem setup using XFS for root and FAT32 for EFI
• Stage3 installation with automatic download and extraction
• Optimized compiler flags using native CPU detection
• Kernel installation via gentoo-kernel-bin for faster setup
• Essential system packages including network management, logging, and scheduling
• GRUB bootloader configuration with EFI support
• Service initialization with OpenRC

• Boot from a Gentoo LiveCD/LiveUSB or similar Linux environment
• Active internet connection
• Target disk for installation (all data will be erased)
• Root privileges

1. Boot into a live Linux environment
2. Download the script:

   git clone https://github.com/soccera1/autotoo.git
   cd autotoo
   chmod +x autotoo.sh

3. Run the script:

   ./autotoo.sh

4. When prompted, enter the disk device (e.g., /dev/sda or /dev/nvme0n1)
5. Confirm the disk selection
6. Set a root password when prompted
7. Wait for the installation to complete (the system will reboot automatically)

• Locale: en_US.UTF-8 and C.UTF-8
• Hostname: tux
• Profile: Default/linux/amd64/23.0 (profile 1)

• Kernel: sys-kernel/gentoo-kernel-bin (binary kernel for faster installation)
• Bootloader: sys-boot/grub (EFI mode)
• Networking: net-misc/dhcpcd
• Time sync: net-misc/chrony
• Logging: app-admin/sysklogd
• Scheduling: sys-process/cronie
• File indexing: sys-apps/mlocate
• Filesystem tools: sys-fs/xfsprogs, sys-fs/dosfstools
• Shell utilities: app-shells/bash-completion

• dhcpcd (network management)
• sshd (SSH server)
• sysklogd (system logging)
• cronie (cron daemon)
• chronyd (time synchronization)

• This script will erase all data on the selected disk - ensure you select the correct device
• The script downloads a specific stage3 tarball (dated 20251019T170404Z) - you may want to update this URL to the latest version
• Root password must be set manually during installation
• The system will automatically reboot after installation completes (10 second countdown)
• No swap partition is created by default

You can modify the script to customize:

• Compiler optimization flags in make.conf
• USE flags
• Additional packages to install
• Partition sizes
• Hostname (default: "tux")
• System locale settings

After the system reboots:

1. Log in as root with the password you set
2. Create a regular user account
3. Configure any additional services
4. Update the system: emerge --sync && emerge -uDN @world
5. Customize your Gentoo installation as needed

• Script fails at disk partitioning: Verify the disk device path is correct and the disk is not mounted
• Network issues in chroot: Check that /etc/resolv.conf was copied correctly
• GRUB installation fails: Ensure the EFI partition is properly mounted at /efi
• System won't boot: Boot from live media and check GRUB configuration and EFI variables

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 https://www.gnu.org/licenses/.

Contributions are welcome! Please ensure any modifications maintain compatibility with current Gentoo installation procedures.

This script is provided as-is for educational and convenience purposes. Always review scripts that perform system-level operations before running them. The authors are not responsible for data loss or system damage resulting from the use of this script.

• Gentoo Handbook
• Gentoo Forums
• Gentoo Wiki