How to running cron job every 5 minutes,seconds,hours,days

How to running cron job every 5 minutes,seconds,hours,days. How to running a script a specific interval using cronjob in linux. 

To execute a cronjob every 5 minutes

*/5 * * * * /home/huupv/script.sh

To execute a cronjob every 5 hours

0 */5 * * * /home/huupv/script.sh

How to running a job every 5 seconds

$ cat every-5-seconds.sh
#!/bin/bash
while true
do
 /home/huupv/script.sh
 sleep 5
done

$ nohup ./every-5-seconds.sh &

To execute a cronjob every 5th weekday

0 0 * * 5 /home/huupv/script.sh

or

0 0 * * Fri /home/huupv/script.sh

0=Sun
1=Mon
2=Tue
3=Wed
4=Thu
5=Fri
6=Sat