Install PDFtk in Windows and Linux

PDFtk  is our friendly graphical tool for quickly merging and splitting PDF documents and pages. It is free and can be downloaded from:
https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/
Foe Windows, run exe file
For Redhat Linux:
$        wget http://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/pdftk-2.02-1.el6.x86_64.rpm

$        sudo yum install jre-gcj
$        sudo rpm -Uvh pdftk-the-pdf-toolkit/pdftk-2.02-1.el6.x86_64.rpm
$        PATH
$        which pdftk