Run crontab Every 50 Minutes !!!

Q. How do I run a cron job or a shell script every 10 minutes using Linux / UNIX cron service?

A. cron is a time-based scheduling service in Linux / Unix-like computer operating systems.

Login to your linux system

Type the following command to enter cronjob:
$ crontab -e

Each cronjob has following syntax:

# +---------------- minute (0 - 59)
# |  +------------- hour (0 - 23)
# |  |  +---------- day of month (1 - 31)
# |  |  |  +------- month (1 - 12)
# |  |  |  |  +---- day of week (0 - 6) (Sunday=0 or 7)
# |  |  |  |  |
  *  *  *  *  *  command to be executed

To get crontab to run a task every 10 minutes you could type as follow
*/50 * * * * /path/to/command
Save and close the file.