PS1='\e[34m$(dirabbr $PS1)'"\e[0m \$ "
PS2='$(make_ps2)'

dirabbr() {
    [[ $1 == $HOME ]] && printf "~" && exit
    local dname=`dirname $1`
    local bname=`basename $1`
    local out="$bname"
    while [[ $dname != $HOME ]] && [[ $dname != / ]]; do
        bname=`basename $dname`
        dname=`dirname $dname`
        out="`echo $bname | cut -c1`/$out"
    done
    [[ $dname == $HOME ]] && printf "~/" || printf $dname
    echo $out
}

make_ps2() {
    local len=$(printf "%s $" $(dirabbr $PWD) | wc -c)
    eval "printf ' %.0s' {2..$len}"
    printf '> \n'
}