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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] Re: [PATCH 2/2] qdev: add command line option to set
	global defaults for properties.
Date: Wed, 25 Nov 2009 14:03:30 +0000
References: <1259060788-17411-1-git-send-email-kraxel@redhat.com>
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To: qemu-devel@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>

> So maybe add "use -device ? to get list of all devices"
> to help text?
> 
> [mst@tuck qemu]$ ~/qemu-git/bin/qemu-system-x86_64 -device ?
> /home/mst/qemu-git/bin/qemu-system-x86_64: invalid option -- '-device'

You need to stop your shell eating the ?

Paul