How do I use John the Ripper?

Im a bit confused on how this works, I just got a rar file that I believe has a 4 digit password. How can I use John the Ripper to bruteforce it with a list of password ranging from 0000 to 9999?

*Edit I followed an old YT video as a tutorial. I was stuck because the password was shown somewhere else

submitted by /u/TheYeetForce
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from hacking: security in practice https://ift.tt/NxCJpa0

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