0

I can compress a 7zip archive with encryption like this:

7z a -pSECRET example.7z *.doc

But in this case I specify the password (SECRET) literally on the command line.

Is it also possible to specify a filename that contains the password? E.g. something like this:

7z a -p@passwordfile.txt example.7z *.doc

Except this doesn't work, in this case it will encrypt the archive literally using the password '@passwordfile.txt'.

Is there another way to go about this?

Improve this question
4
  • -p"$(cat passwordfile.txt)", or maybe (read secret < passwordfile.txt; 7z a -p"$secret" example.7z *.doc)
    – Tom Yan
    May 14 at 9:04
  • @TomYan Thanks but that way the password still becomes literally included in the actual command line. If I'd do ps -aux | grep 7z in another shell while it's encrypting, it shows the password there. And possibly it's even being logged in ~/.bash_history. I was hoping for a possibility of 7z itself to specify a password in a file, but maybe such a feature simply isn't there?
    – RocketNuts
    May 14 at 20:52
  • 1
    @RocketNuts For a couple other potential ways/ideas linuxquestions.org/questions/linux-software-2/… and howtogeek.com/734838/…
    – Vomit IT - Chunky Mess Style
    May 15 at 2:18
  • This might help: superuser.com/a/1358942/340330
    – Cyrus
    May 15 at 21:53

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.