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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How to use pgp to verify tails .img file? (lemmy.sdf.org)

submitted 6 days ago by BD89@lemmy.sdf.org to c/linux@lemmy.ml

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I know I see the little button that does it automatically but I don't want to use that I want to know how to do it correctly. -Problem is, every guide says to use the .asc file. I don't have that, tails gave me a .IMG file, a .SIG file, and then I downloaded a tails-signing.key file. How do I manually verify this file with just those files?

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[–] vegetaaaaaaa@lemmy.world 3 points 5 days ago

wget --continue --timestamping --show-progress https://tails.boum.org/tails-signing.key
wget --continue --timestamping --show-progress https://tails.boum.org/torrents/files/tails-amd64-6.8.1.iso.sig
gpg --import "tails-signing.key"
wget --continue --timestamping --show-progress https://mirrors.wikimedia.org/tails/stable/tails-amd64-6.8.1/tails-amd64-6.8.1.img
gpg --keyid-format 0xlong --verify tails-amd64-6.8.1.iso.sig tails-amd64-6.8.1.img

(adapted from my script https://gitlab.com/nodiscc/distrib-dl / https://github.com/nodiscc/distrib-dl)

[–] Limonene@lemmy.world 9 points 6 days ago

Have you imported the tails-signing.key yet? Usually you can double-click on that to import it using whatever graphical gpg frontend is set up on your system. It may ask you how well you trust the owner of the key. You can answer that question however you want without affecting this verification process.

Next, it looks like you run the instructions from this page: https://tails.net/install/expert/index.en.html#verify

Some of those command line parameters look a little paranoid. The basic command you want to run is: gpg --verify somefile.sig somefile.img