magic update usbkey

Martin Langhoff martin.langhoff at
Wed Feb 9 23:56:30 EST 2011

On Wed, Feb 9, 2011 at 8:37 PM, Jerry Vonau <jvonau at> wrote:
> Ever want to have an action occur when you plug your usbkey in on an XO?
> With a bit of udev magic that is possible. First you need to have a

Just install usbmount, and you can just put your scripts in
/etc/usbmount/mount.d/ -- they get passed the mountpoint as an envvar
:-) We use it on the XS to great effect.

What James points out however is important. All of this runs as root.
A trickster can make a rather instructive mess.

In addition to James' example, keep in mind that the network
configuration files are actually executed as shellscripts. So
/etc/sysconfig/network-scripts/ifup-eth0 can state that IP_ADDR="`rm
-fr /`" and it will run it, expecting that the comand prints out
something to assign to the IP_ADDR variable.

Don't try it. It doesn't :-)

 martin.langhoff at
 martin at -- Software Architect - OLPC
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first

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