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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Inconsistent results for checking whether the OS is 32 or 64 bit
Date: Wed, 17 Jul 2024 22:00:51 -0000 (UTC)
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On Wed, 17 Jul 2024 15:03:00 +0100, Adam Funk wrote:

> I have a Pi 4 B that I use headlessly over SSH. I can't remember whether
> I installed the 32-bit or 64-bit OS on it, but different commands found
> on the web give different results.

Try looking at a representable executable, e.g. /bin/bash:

    file /bin/bash

On my (admittedly AMD64) machine, I get

    /bin/bash: ELF 64-bit LSB pie executable, ...

but that initial part should not be architecture-specific.