[Tfug] Squeeze Temporary FIles

earljviolet at deserthowler.com earljviolet at deserthowler.com
Sat May 7 14:30:56 MST 2011

I haven't used Vbox for a long time so am pretty rusty.  If I remember
correctly though, it is necessary to go into Vbox first and start your
Windows virtual machine and then plug in the USB scanner.  Hope this


On Sat, May 7, 2011 10:38 am, Charles R. Kiss wrote:
> I'm trying to get my USB scanner working through windows on a virtualbox
> linux
> host; I installed the extpack and the vbox additions; so I'm not sure this
> is
> a vbox EULA question.
> I have a network scanner working on linux, just trying to get this other
> scanner going since it can do slides, but it's a Canon Lide80.
> There is a popular piece of code that apparently works for other machines
> for
> testing USB of guests, but it doesn't work for mine, and I would like to
> know
> why, please see below.  Can someone please make a comment.
> On a side note, I added vboxusers group as well as other depricated groups
> to
> user.  The Debian Squeeze seems to have changed some /udev stuff, fstab
> wise,
> etc. which I would like to mention as possible methods of working around
> this
> USB issue but I've also noticed some other temporary files problems,
> resulting
> in my having to manually clear it (maybe not a good idea but bears
> mentioning,
> I run through a script:  rm -Rf /tmp/kde-charles/* ), maybe these issues
> are
> related since /tmp clearing is something I've never had to do before.
> All these issues exist across multiple reboots.
> The /tmp is it's own partition, and I did look into the IFS splitting of
> for
> loops in bash with spaces for characters, but not sure it applies.
> What else is there?
> Here are the test code pieces:
> This code works, and writes to the /tmp dir:
> TMPFILE=`mktemp /tmp/example.XXXXXX`
>      if [ -z "$TMPFILE" ]; then exit 1; fi
>      echo "program output" >> $TMPFILE
> The popular code aborts here, which is the first paragraph of the script:
> # Set up environment
> PATH="/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/home/charles/bin"
> set -u    #this was originally:  set -o nounset
> unset IFS
> tmp_afn="$(mktemp "/tmp/$0.XXXXXX")"
> [[ $? -ne 0 ]] && \echo "ERROR: unable to create temporary file (this is
> not a
> VirtualBox USB problem)" >&2 && \exit 1
> trap "rm -f $tmp_afn" EXIT
> The whole of the "popular code" can be found here:
> http://forums.virtualbox.org/viewtopic.php?f=2&t=29356
> Apparently, I can't get past the first paragraph!
> Thanks again,
> Charles
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