pdftk is a very useful and powerful pdf-toolkit. It is available for Ubuntu with the package pdftk. Here are some practical example if its usage.
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Merge Two or More PDFs into a New Document:
pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf -
or (Using Handles):
pdftk A=1.pdf B=2.pdf cat A B output 12.pdf -
or (Using Wildcards):
pdftk *.pdf cat output combined.pdf -
Split Select Pages from Multiple PDFs into a New Document:
pdftk A=one.pdf B=two.pdf cat A1-7 B1-5 A8 output combined.pdf -
Rotate the First Page of a PDF to 90 Degrees Clockwise:
pdftk in.pdf cat 1E 2-end output out.pdf -
Rotate an Entire PDF Document's Pages to 180 Degrees:
pdftk in.pdf cat 1-endS output out.pdf -
Encrypt a PDF using 128-Bit Strength (the Default) and Withhold All Permissions (the Default):
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foopass -
Same as Above, Except a Password is Required to Open the PDF:
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz -
Same as Above, Except Printing is Allowed (after the PDF is Open):
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz allow printing -
Decrypt a PDF:
pdftk secured.pdf input_pw foopass output unsecured.pdf -
Join Two Files, One of Which is Encrypted (the Output is Not Encrypted):
pdftk A=secured.pdf mydoc.pdf input_pw A=foopass cat output combined.pdf -
Uncompress PDF Page Streams for Editing the PDF Code in a Text Editor:
pdftk mydoc.pdf output mydoc.clear.pdf uncompress -
Repair a PDF's Corrupted XREF Table and Stream Lengths (If Possible):
pdftk broken.pdf output fixed.pdf -
Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt:
pdftk mydoc.pdf burst -
Report on PDF Document Metadata, Bookmarks and Page Labels:
pdftk mydoc.pdf dump_data output report.txt
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