X=`basename "$0"`
shuf </usr/share/dict/words >${X}_input
time sort -s <${X}_input >${X}_output1
time sort4 <${X}_input >${X}_output2
time sort8 <${X}_input >${X}_output3
cmp ${X}_output1 ${X}_output2
cmp ${X}_output1 ${X}_output3
rm ${X}_input ${X}_output1 ${X}_output2 ${X}_output3