Gentoo Litecoin QT / Dogecoin hashrate wallet

This article describes how to build a chroot environment for Gentoo distribution.

NOTE: Debian GNU/Linux will be our host system, but these steps should also work for most other Linux based distributions (e.g: Ubuntu).

DOWNLOAD A SMALL MINIMUM GENTOO SYSTEM

First we are going to download a minimal Gentoo system, called STAGE3.

We choose our architecture, in my case x86, and i686 specifically.
$ wget

There is a list of mirrors here:

We could download directly from gentoo page too:
$ wget

BUILDING OUR GENTOO DIRECTORY

We create a directory where we will place Gentoo files:
$ mkdir gentoo_chroot
and uncompress there the stage3 archive.
# tar xvjf stage3-i66.tar.bz2 -C gentoo_chroot/

Copy resolv.conf file to resolve names:
# cp -L /etc/resolv.conf gentoo_chroot/etc/resolv.conf
We will be able to resolve addresses.

Copy /etc/host file:
# cp /etc/hosts gentoo_chroot/etc/
or we could create a new one:
e.g: # echo "127.0.0.1 mybox.at.myplace mybox localhost" > gentoo_chroot/etc/hosts

I like using same hostname as the host one because if we change it in chroot, it also changes in the host.

When we will enter in the chroot jail we will be able to exec:
# hostname -f # shows mybox.at.myplace.
# ping mybox.at.myplace

MOUNTING NEEDED DIRECTORIES

We use bind option to duplicate some host directories in the chroot filesystem:

# mount --bind /dev gentoo_chroot/dev
# mount --bind /proc gentoo_chroot/proc
# mount --bind /sys gentoo_chroot/sys
# mount --bind /dev/pts gentoo_chroot/dev/pts # Needed for agetty login and screen command.
# mount --bind /tmp gentoo_chroot/tmp # If we want share X windows between host and guest.

ENTERING THE CHROOT ENVIRONMENT

# chroot gentoo_chroot /bin/bash
We are in the gentoo chroot envirionment!!
Unless told, every command from now on is executed within the chroot env.

To update and configure some environment variables:
# env-update
# source /etc/profile # To configure our current shell environment.

CUSTOMIZING YOUR PROMPT

We can also customize our prompt to show we are in the chroot jail.