You'll have to make sure that your script has the right permissions to run through the cron.

Then simply add the following to crontab to make it run every day at 10 AM

*  10  *  *  * /path/to/your/script.pl
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You might want your cron to suppress output, which make the line above as follows:

*  10  *  *  * /path/to/your/script.pl > /dev/null 2>&1
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