Basic Cron Job and Cron job Configuration

Cronjob Examples: How to write a crontab schedule expression for:

Every minute --> * * * * * /root/test.sh
Every 1 minute --> * * * * * /root/test.sh
Every 2 minutes --> */2 * * * * /root/test.sh
Every 5 minutes --> */5 * * * * /root/test.sh
Every 10 minutes --> */10 * * * * /root/test.sh
Every quarter hour --> */15 * * * * /root/test.sh
Every 30 minutes --> */30 * * * * /root/test.sh
Every hour at 30 minutes --> 30 * * * * /root/test.sh
Every 60 minutes --> 0 * * * * /root/test.sh
Every hour --> 0 * * * * /root/test.sh
Every 1 hour --> 0 * * * * /root/test.sh
Every 2 hours --> 0 */2 * * * /root/test.sh
Every 12 hours --> 0 */12 * * * /root/test.sh
Every day --> 0 0 * * * /root/test.sh
Every night --> 0 0 * * * /root/test.sh
Every day at 1am --> 0 1 * * * /root/test.sh
Every day at 2am --> 0 2 * * * /root/test.sh
Every day 8am --> 0 8 * * * /root/test.sh
Every sunday --> 0 0 * * SUN /root/test.sh
Every monday --> 0 0 * * MON /root/test.sh
Every 7 days --> 0 0 * * 0 /root/test.sh
Every week --> 0 0 * * 0 /root/test.sh
Every month --> 0 0 1 * * /root/test.sh
Every quarter --> 0 0 1 */3 * /root/test.sh
Every 6 months --> 0 0 1 */6 * /root/test.sh
Every year --> 0 0 1 1 * /root/test.sh