cron - Format

* * * * * <command>
| | | | |
| | | | +---- Day of the week (0 - 6) (Sunday to Saturday, 7 is also Sunday on some systems)
| | | +------ Month (1 - 12)
| | +-------- Day of the month (1 - 31)
| +---------- Hour (0 - 23)
+------------ Minute (0 - 59)

1. *: any or every value for specific time field

• example:
  • 0 * * * *: every 1 hour (at minute 0)

2. */<num>: every specific time filed

• example:
  • * */2 * * * : every 2 hours

3. Schedule command will not source .bashrc

ensure not using aliases or function defined in .bashrc