debian-bash/install.sh

#!/bin/bash

if [ ! -d /opt/debian-bash ]; then
    TEMP=`mktemp -d`
    cd $TEMP
    echo $TEMP
    wget https://git.artcode.re/pvincent/debian-bash/archive/master.tar.gz
    tar -xzf master.tar.gz
    mv debian-bash /opt/
    cd /opt/debian-bash
    sudo ./install.sh
    exit 0
fi

[ `id -u` -ne 0 ] && echo 'root privilege required' && exit 1

BASEDIR=$PWD
[ ! $BASEDIR == '/opt/debian-bash' ] && echo 'should be installed in /opt/debian-bash directory' && exit 1

ORIGINAL="ORIGINAL"
declare -a arr=(/etc/bash.bashrc /etc/inputrc /etc/vim/vimrc)

for i in "${arr[@]}"
do
    if [ ! -f "$i.$ORIGINAL" ]; then

        echo "$i needs installation $(basename $i)"
        mv "$i" "$i.$ORIGINAL"
        ln -s "$BASEDIR/$(basename $i)" "$i"
    else
        echo "$i" already overriden
    fi
done

source /etc/bash.bashrc