in2chroot

#!/bin/bash

# Stolen from Jonathan Wright

USER="$(whoami)"
CHROOT=${1%\/}
umask=002

if [ -z "$1" ]; then
  echo "ERROR: No chroot directory provided."
  exit 1
fi

if [ ! -d "$CHROOT" ]; then
  echo "ERROR: $CHROOT is not a directory."
  exit 2
fi

if [ "$(whoami)" == "root" ]; then
  echo "ERROR: Please do not run as root"
  exit 3
fi

echo "Starting chroot environment in $(pwd)/$CHROOT/..."
echo "  (please enter sudo password if requested)"
echo ""

if [ ! -e $CHROOT/etc/debian_chroot ]; then
  echo ">> naming chroot environment..."
  sudo touch $CHROOT/etc/debian_chroot
  sudo chmod 666 $CHROOT/etc/debian_chroot
  echo "$CHROOT" > $CHROOT/etc/debian_chroot
fi

if [ ! -d $CHROOT/home/$USER ]; then
  echo ">> creating home directory..."
  sudo mkdir $CHROOT/home/$USER
  sudo chown $USER $CHROOT/home/$USER
fi

echo ">> moving .bashrc & user files..."
cp ~/.bash* $CHROOT/home/$USER/
cp ~/.quilt-dpkg $CHROOT/home/$USER/
cp ~/.debianrc $CHROOT/home/$USER/
cp -Lr ~/.zshrc $CHROOT/home/$USER/
cp -Lr ~/.zsh $CHROOT/home/$USER/

sudo chown $USER $CHROOT/home/$USER/.bash*
sudo chown $USER $CHROOT/home/$USER/.zsh*
# This might fail because we might not have those users in the chroot
sudo cp /etc/{passwd,group,shadow,mtab} $CHROOT/etc/

echo ">> moving .vimrc and .vim/ files and folders..."
cp -rL ~/.vimrc ~/.vim/ $CHROOT/home/$USER/
sudo chown $USER $CHROOT/home/$USER/.vim*

for DIR in dev proc selinux sys
do
  [[ ! -d "$CHROOT/$DIR" ]] && continue
  
  if [ $(mount | grep -c $CHROOT/$DIR) -eq 0 ]; then
    echo ">> mounting /$DIR in enviroment..."
    sudo mount -o bind /$DIR $CHROOT/$DIR
  fi
done

echo ">> moving into new environment..."
sleep 1
echo ""

cd $CHROOT
sudo chroot .

cd ..