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Date: Thu, 2 Apr 2020 20:01:40 +0200
From: Solar Designer <>
Subject: Re: Ubuntu snap errors

On Thu, Apr 02, 2020 at 12:01:28AM +0000, MARCELO CHIESA wrote:
> Hi, I am new here. I need help as I installed john using snap as suggested and it is now installed but the first time I executed john on Ubuntu 18.04.4 LTS I get this:
> $ john 24229_1585779530.hccapx > crackme

This command is erroneous.  Perhaps you'd want to use these 2 commands:

john-the-ripper.hccap2john 24229_1585779530.hccapx > crackme
john crackme

> 2020/04/01 20:39:27.227149 system_key.go:126: cannot determine nfs usage in generateSystemKey: cannot parse /etc/fstab: expected between 3 and 6 fields, found 7

As Claudio correctly implied, this message does not come from "john" -
it comes from the underlying system.  You can most likely ignore it.

> Using default input encoding: UTF-8

This message comes from "john", and is fine (not an error).  However,
your command is erroneous anyway, and won't work.


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