Below is a pre-compiled version of the deskew plugin for Gimp 2.8, which is a dependency for the widely used DivideScannedImages script.
I couldn’t find a working Linux version of it to download, so I compiled it myself instead. It was compiled on 64 bit Ubuntu 12.10 but I would expect it to work on other similar Ubuntu/Debian versions. It may also work on other versions of the Gimp, but I haven’t tried it.
Download the deskew plugin file and drop it into /usr/lib/gimp/2.0/plug-ins
Then run these command to get the permissions right.
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cd /usr/lib/gimp/2.0/plug-ins sudo chown root:root deskew sudo chmod +x deskew |
You should now see Deskew as an option under Layer -> Transform -> Deskew