学步园

 poppler-utils是一个基于xpdf-3.0的pdf渲染库。

$ sudo apt-get install poppler-utils 

使用：

pdftotext {PDF-file} {text-file} 

How do I convert a pdf to text?

 a  file  hp-manual.pdf to hp-manual.txt, enter:
$ pdftotext hp-manual.pdf hp-manual.txt
Specifies the  page to convert, enter:
$ pdftotext -f 5 hp-manual.pdf hp-manual.txt
Specifies the last page to convert, enter:
$ pdftotext -l 5 hp-manual.pdf hp-manual.txt
Convert a pdf file  and encrypted by  password:
$ pdftotext -opw 'password' hp-manual.pdf hp-manual.txt
Convert a pdf file protected and encrypted by user password:
$ pdftotext -upw 'password' hp-manual.pdf hp-manual.txt
Sets the end-of-line convention to use for text output. You can set it to unix, dos or mac. For UNIX / Linux oses, enter:
$ pdftotext -eol unix hp-manual.pdf hp-manual.txt

类似的还有pdf2dic,pdf2ps,pdftoabw,pdftohtml,pdftoppm,pdftops,pdftotext,等等，好强大的包啊。