parameter=$1

install() {
    if [[ $parameter == "all" ]] || [[ $parameter == $1 ]]; then
        echo "Installing $1 config in $2"
        rm -rf $2_backup/
        mv $2/ $2_backup/
        cp -r $1 $2/
    fi
}

if [[ $parameter == '' ]]; then
    echo "No config specified, the following configs are available:"
    echo "  all - all of the config files"
    while read name path; do
        echo "  $name"
    done <configs
    exit
fi

while read name path; do
    eval "name=$name" # re-evaluate the string as a path
    eval "path=$path" # re-evaluate the string as a path
    install $name $path
done <configs