Unchanged="0 5 10 15 20 25 30" Crossover="0 5 10 15 20 25 30" Mutation="0 5 10 15 20 25 30" for u in $Unchanged; do for c in $Crossover; do for m in $Mutation; do ./tool -r $RANDOM -d 5 -u $u -x $c -m $m done done done