use crontab to define a event and exec every second , it's simply like a log count

listEverySecond.sh

##!/bin/bash  

step=1

for (( i = 0; i < 60; i=(i+step) )); do
   # ls ~/tmp/javfor.me/ | wc -l
   # ls ~/tmp/javfor.me/ | grep -E "html\."
        ls -R ~/jav/ | wc -l
        
        sleep $step
done

exit 0