PDF tricks

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Concatenation

Rearranging pages

If one pdf contains left-side pages of a scanned book, and another contains the right-side pages, here's one way to fix it using PDFTK:

genranges.scm:
(define lastpage 269)
(let loop ([i 0])
        (when (<= i lastpage)
                (printf " A~a B~a" i i)
                (loop (+ 1 i))))
(exit)

csi genranges.scm > r
vi r (and delete extraneous stuff)
pdftk A=left.pdf B=right.pdf cat `cat r` output c.pdf
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