bash dd confirmation function/alias for those who need it

dd-alias.sh

function dd () {
        local bold=$(tput bold)
        local normal=$(tput sgr0)
        local red=$(tput setaf 1)
        local green=$(tput setaf 2)
        local yellow=$(tput setaf 3)

        local ddcommand=$(which dd)
        local vars=""

        for var in "$@"
        do
                eval local $var;
                vars="$vars $var"
        done
        if [ -z ${status+x} ]; then vars="$vars status=progress";
        if [ -z ${if+x} ]; then echo "${bold}${red}No input specified!${normal}"; fi
        else
                echo "${bold}${green}Input: $if${normal}";
                if [[ $if == *"/dev/"* ]]; then
                    fdisk -l $if
                else
                    ls -l $if
                fi
        fi
        if [ -z ${of+x} ]; then echo "${bold}${red}No output specified!${normal}";
        else
                echo "${bold}${yellow}Output: $of${normal}";
                if [[ $of == *"/dev/"* ]]; then
                    fdisk -l $of
                else
                    ls -l $of
                fi
        fi
        echo "${bold}${yellow}Command: $of${normal}";
        echo "$ddcommand$vars"
        read -r -p "${bold}${red}Are you sure? [y/N]${normal} " response
        if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]
        then
            $ddcommand$vars
        fi
}