如何合并PDF文件(如果不可能，则合并PS)，以使每个文件都从奇数页开始? [英] How can I merge PDF files (or PS if not possible) such that every file will begin in a odd page?

问题描述

我正在UNIX系统上工作，我想将成千上万个PDF文件合并到一个文件中以进行打印.我不知道他们提前多少页.

I am working on a UNIX system and I'd like to merge thousands of PDF files into one file in order to print it. I don't know how many pages they are in advance.

我想双面打印，这样两个文件将不在同一页面上.

I'd like to print it double sided, such that two files will not be on the same page.

因此，我希望合并文件对齐，以便每个文件都从奇数页开始，如果下一个要写入的位置是偶数页，则将添加一个空白页.

Therefore it I'd the merging file to be aligned such that every file will begin in odd page and a blank page will be added if the next place to write is an even page.

推荐答案

这是我使用的解决方案(它基于@Dingo的基本原理，但是使用了更简单的PDF操作方法):

Here's the solution I use (it's based on @Dingo's basic principle, but uses an easier approach for the PDF manipulation):

首先，我创建一个PDF文件，该文件的某处只有一个空白页，例如在"/path/to/blank.pdf"中.

First, I create a PDF file with a single blank page somewhere, e.g. in "/path/to/blank.pdf".

然后，从包含我所有pdf文件的目录中，运行一个小脚本，该脚本将blank.pdf文件附加到具有奇数页码的每个pdf中:

Then, from the directory that contains all my pdf files, I run a little script that appends the blank.pdf file to each pdf with an odd page number:

#!/bin/bash

for f in *.pdf; do
  let npages=$(pdfinfo "$f"|grep 'Pages:'|awk '{print $2}')
  let modulo="($npages %2)"
  if [ $modulo -eq 1 ]; then
    pdftk "$f" "/path/to/blank.pdf" output "aligned_$f"
  else
    cp "$f" "aligned_$f"
  fi
done

现在，所有"aligned_"文件都具有偶数页码，我可以使用

Now, all "aligned_" files have even page numbers, and I can join them using

pdftk aligned_*.pdf output result.pdf

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