Ubuntu how to get interval time for run Application

howmuchdelay.sh

T="$(date +%s%N)"
# Do some work here
$1 $2 $3 $4 $5 #sleep 2

# Time interval in nanoseconds
T="$(($(date +%s%N)-T))"

# Seconds
S="$((T/1000000000))"

# Milliseconds
M="$((T/1000000))"

printf "Take: %02d:%02d:%02d:%02d.%03d\n" "$((S/86400))" "$((S/3600%24))" "$((S/60%60))" "$((S%60))" "${M}"