[ale] instruction needed

[Sean Kilpatrick]

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I'm curious again.

First, the facts.

Needing workable scanning software, I took advice
heard at the Ale meeting last week and downloaded
a (free) copy of Vuescan <http://www.hamrick.com>.

Unpacked the tarball and tried to run the program.
Got an error message about needing the "sg driver."
Having no idea what that might be, I asked my son
for some advice and he offered a number of suggestions.
The easiest to impliment was change ownership and
group for the "sg0" device.
Which I did.
The scanner software now works. Well.

Great program. It costs $50/$80 for the Windows
and Mac versions (personal/professional) but is free
for Linux. It is good enough to pay for. Works with
a huge range of scanners (including high-end film
scanners) on usb, firewire, and SCSI.

My question is simple: what's an "sg" device?

Sean

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