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How can I programmatically create a new cron job?

I want to be able to programatically add a new cron job, what is the best way to do this?

From my research, it seems I could dump the current crontab and then append a new one, piping that back into crontab:

(crontab -l ; echo "0 * * * * wget -O - -q http://www.example.com/cron.php") | crontab -

Is there a better way?

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create code fences with backticks ` or tildes ~
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like so
```
add language identifier to highlight code
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def function(foo):
print(foo)
```
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How can I programmatically create a new cron job?

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