Bash function to measure basic stats of a command's running times

runtime

# Run a function multiple times and output the average time
runtime() {
    quiet=""
    if [ $1 = "-q" ]; then
        quiet="quiet"
        shift
    fi
    number=$1
    shift
    tot=0
    max=-1
    min=10000
    for i in `seq $number`; do
        tmp=$({ time $@ > /dev/null; }  2>&1 | perl -ne 'print if s/(real\s+0m)([\.\d]*)(s)/\2/;')
        tot=$(python -c "print($tot + $tmp)")
        max=$(python -c "print(max($max, $tmp))")
        min=$(python -c "print(min($min, $tmp))")
        if [ -z "$quiet" ]; then
            python -c "print('{:4} / {:<4}: {} s'.format($i, $number, $tmp))";
        fi
    done
    python -c "print('Average:    {:7.3f} s'.format($tot/$number))"
    python -c "print('Max:        {:7.3f} s'.format($max))"
    python -c "print('Min:        {:7.3f} s'.format($min))"
    python -c "print('Total:      {:7.3f} s'.format($tot))"
}