@cwebber

xkcdpass() {
W=/usr/share/dict/words;
N=$(wc -l $W | awk '{print $1}');
for((i=0;i<4;++i)); do
A=$(dd if=/dev/urandom bs=4 count=1 2>/dev/null | \
od -D | head -n1 | awk '{print $2}');
((A%=N));
((i>0)) && echo -n ' ';
echo -n $(sed -ne "${A}p" $W);
done;
echo
}