<oerjan> addquote <GreyKnight> headache + train with screeching brakes = headache^2 <hagb4rd> hm..headache + train with no screeching brakes = no head <GreyKnight> On the plus side, no headache anymore

#!/bin/sh
allquotes | if [ "$1" ]; then
    if expr "$1" + 0 >/dev/null 2>&1; then
        sed "$1q;d"
    else
        grep -P -i -- "$1"
    fi
else shuf -n 1; fi