Bash in a jar

bash-in-a-jar.bash

#!/usr/bin/env bash

readonly GREEN='\033[32m'
readonly NC='\033[0m'
header() { printf "${GREEN}$@${NC}"; }

readonly LOCATION=$(pwd)/bash-in-a-jar

header "installation location:\n"
echo ${LOCATION}

header "\ncreating directories:\n"
echo ${LOCATION}/{bin,lib,lib64}
mkdir -p ${LOCATION}/{bin,lib,lib64}
cd ${LOCATION}

for NAME in /bin/{bash,echo,ls}
do
  header '\ncopying binary: '
  cp -v ${NAME} ${LOCATION}/bin
  header '\ncopying shared object:\n'
  ldd ${NAME} | egrep -o '/lib.*\.[0-9]' | xargs -i cp -v --parents {} .
  echo
done

header 'now run: '
echo 'sudo chroot .' /bin/bash