[DISCLAIMER] Does not work (yet). Some issues with the PATH. More to come.
Issue: You have scanned a A5 format book flat open on the A4 scanner bed. You therefore have a pdf book of landscape A4 pages, each containing 2xA5 pages side by side. How can you switch to a A4 format with one (book) pageper (pdf) page, and in portrait orientation?
- install LaTeX (texlive is the package available for ubuntu) latest version (TeX Live 2011)
sudo apt-add-repository ppa:texlive-backports/ppa
sudo apt-get update
sudo apt-get install texlive - install PDFjam
sudo apt-get install pdfjam
- install pdftex
sudo wget http://sarovar.org/frs/download.php/1292/pdftex-1.40.10.tar.bz2 ~/Downloads/
sudo tar -xvf ~/Downloads/pdftex-1.40.10.tar.bz2
sudo mkdir /usr/share/texmf/tex/latex/pdftex-1.40.10
sudo mv ~/Downloads/pdftex-1.40.10/ usr/share/texmf/tex/latex/pdftex-1.40.10 - install eso-pic
sudo wget http://mirror.ctan.org/macros/latex/contrib/eso-pic.zip ~/Downloads/
sudo unzip -d ~/Downloads/contrib/eso-pic.zipsudo mkdir /usr/share/texmf/tex/latex/eso-pic
sudo mv ~/Downloads/eso-pic/ usr/share/texmf/tex/latex/eso-pic/ - install eso-piceveryshi
sudo wget http://mirror.ctan.org/macros/latex/contrib/ms.zip ~/Downloads/
sudo unzip -d ~/Downloads/contrib/ms.zip
sudo mkdir /usr/share/texmf/tex/latex/ms
sudo mv ~/Downloads/ms/ usr/share/texmf/tex/latex/ms/ - install pdfpages
sudo wget http://www.ctan.org/pkg/pdfpages ~/Downloads/
sudo unzip -d ~/Downloads/contrib/pdfpages.zip
sudo mkdir /usr/share/texmf/tex/latex/pdfpages
sudo mv ~/Downloads/pdfpages/ usr/share/texmf/tex/latex/pdfpages/ - install pdfnup-gui (1.0.2)
sudo wget http://qt-apps.org/CONTENT/content-files/134874-pdfnup-gui.tar.gz ~/Downloads/
sudo tar -xvf ~/Downloads/134874-pdfnup-gui.tar.gz
cd ~/Downloads/pdfnup-gui/
./configure
make
sudo make install
Also add PATH