john-users - How does JTR know what kind of hash to try to crack?

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Date: Mon, 31 Dec 2012 23:00:53 +0000
From: John Hall <JohnH@...tworking.com>
To: "john-users@...ts.openwall.com" <john-users@...ts.openwall.com>
Subject: How does JTR know what kind of hash to try to crack?

Using JTR with jumbo patch to try to crack forgotten password to the Password Safe program http://passwordsafe.sourceforge.net/

I believe the Password Safe program uses SHA-256 hash.

Question: How does john know to try SHA-256 hash codes instead of, say, MD5 hash codes or some other hash?

John H.