Task 5 question 2

$ grep "run-time" $file | grep -o " [0-9]\." | grep -o "[0-9]"

Task 5 question 4

for file in *log; do
    var=$(grep "run-time" $file | grep -o " [0-9]\." | grep -o "[0-9]")
    if [[ $var -lt 9 ]]; then
        echo "$file : $var"
    fi
done

Task 5 question 5

for file in *log; do
    var=$(grep "run-time" $file | grep -o " [0-9]\." | grep -o "[0-9]")
    if [[ $var -lt 9 && $var -gt 0 ]]; then
        echo "$file : $var"
    fi
done