I would like to schedule my tasks every x months on day 1 starting for example, March. I am unsure if this is the syntax I'm looking for (for repeating the job every 4 months):
0 0 1 3/4 * /path/to/file
The man page for crontab does not explain in detail how the steps (/) work.
You have it correct in your comment to Abhishek's answer.
0 0 1 3,7,11 * /path/to/file
In this case the "/" won't do what you're after.
Just for completeness, it seems that you originally wanted to do this:
0 0 1 3-12/4 * /path/to/file
Just like with the other fields, if you want a month range, you have to specify both the start and the finish, separated by a dash. For every odd-numbered month, for example, you can use:
0 0 1 1-12/2 * /path/to/file
Below is the syntax
0 0 1 */4 * /path/to/file
