I have Cygwin install 64-bit version and have installed apt-cyg; using this, I have installed openssh and vim just fine, but I am not able to install pdftk. Does it have some other name? Or is there some other tool I can use to split and merge pdf files in Cygwin?
I got PDFtk commands with Cygwin by installing the server version of PDFtk (https://www.pdflabs.com/tools/pdftk-server/) in Windows 7 64bits.
While installing PDFtk Server, make sure to check the box saying to apply PDFtk to the system environment. Once the installation is done, type "pdftk" in Cygwin and it should give the expected results.