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Questions tagged [sha256sum]

9 questions
6
votes
1 answer

Checking sha256 checksum

I was trying to check the authenticity of a download by using the shasum in ubuntu. I am unable to understand the syntax though. The code below works echo " *filename" | shasum -a 256 -c I wanted to know why are we putting a …
satinder singh
  • 163
1
vote
1 answer

Unable to verify 20.04.03 download

I am trying to follow this guide here: https://ubuntu.com/tutorials/how-to-verify-ubuntu#1-overview I have downloaded the ISO file and I have the following files in my Downloads directory: SHA256SUMS SHA256SUMS.gpg ubuntu-20.04.3-desktop-amd64.iso I…
Scooby-2
  • 548
1
vote
0 answers

Where can I suggest something to Ubuntu devs?

Ubuntu torrent downloads should include the PGP signature and the SHA256SUM. That would guarantee that the PGP signature and the S256SUM (current available at releases.ubuntu.com) aren't tampered.
Luna
  • 11
1
vote
0 answers

Ubuntu 20.04 - Verifying 5.8.3 Kernel

I have a Lenovo+Ryzen-4500 laptop running 20.04 that needs a later Kernel for external monitors. I installed 5.8.0 some weeks back and it has been working fine for me. I just read about an FBI report on a rogue Kernel thing and thought I'd update…
user2445336
  • 41
1
vote
1 answer

Can't verify ubuntu 19.10 download on Mac os x

Can't verify ubuntu 19.10 download on mac os: "gpg: can't open 'SHA256SUMS.gpg': No such file or directory gpg: verify signatures failed: No such file or directory" Both the SHA256SUMS and SHA256SUMS.gpg are downloaded.
hgen8tgvqgyq
  • 11
  • 1
1
vote
1 answer

sha256sum: 'filename': No such file or directory

The command sha256sum correctly calculates checksum indicated in .sha256 file: user@myHostname:~/Desktop/RT_N16/Merlin_JohnsFork$ sha256sum RT-N16_3.0.0.4_374.43_2-39L3j9527.trx 545927719c46e359a0db6bf9dcb348f99c0f3d8786725780cb182994c61b19be …
gatorback
  • 6,523
0
votes
1 answer

Verifying 22.0-4 ISO Download Problem

How Do I Verify Ubuntu 22.04 ISO Download I'm having issues installing Ubuntu 22.04 iso on an old PC. So I'm checking all the steps. step 1 was to verify the iso file and I followed the steps suggested…
trevorb
  • 1
0
votes
1 answer

How does Ubuntu's install CD file integrity self-check work (checksum, corrupt, digest)

How does the Ubuntu Install disk verify its own integrity after boot and before install? I'm very familiar with the process to do a manual check of the integrity of a Linux distro's .iso file with a cryptographic hash stored in a (hopefully signed)…
Michael Altfield
  • 358
0
votes
1 answer

Cannot verify my download ver20.04.01

I have followed the tutorial steps, which by the way it is very annoying no one mentions the need to type sudo before everything, and when I get to the steps requiring the download of the SHA256 files, I can only download the .gpg file, the other…
Ian T
  • 1