![]() ![]() In Windows, I think it would be Ctrl+ z, but I'm not sure). You can then type, RET and Ctrl+ d ( Ctrl+ d sends EOF in Linux. Once you enter that, qpdf will be waiting for input from stdin. qpdf can read a password from stdin passing - to the -password-file= option: qpdf -password-file=-decrypt protected.pdf out.pdf The password is then queried in the terminal and you can type it. With pdftk we can use: pdftk protected.pdf input_pw output out.pdf do_ask But maybe you received a pdf from a company which used some data of yours to encrypt the file, and you'd like to avoid leaking it. ![]() Of course, since this is about removing the password protection from the file, maybe you don't care. This is an old question, but seems to be a reference on the matter and, surprisingly, none of the answers tells us how to avoid passing the password on the command line (which may be a source of leakage). ![]()
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