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Resolved Update: apparently cat cannot write to /etc. Resolved by using:

sudo tee /etc/apt/sources.list.d/mozilla.sources <<eof types: deb uris: https: packages.mozilla.org apt suites: mozilla components: main signed-by: etc keyrings packages.mozilla.org.asc eof p></eof>

The instructions need updating!

_________________original problem (in case some one else needs the information)

I am following the instructions in section "Install Firefox from Mozilla Repository (Recommended)" at https://support.mozilla.org/en-US/kb/run-firefox-chromeos At step 4 I am receiving a permission denied error: "-bash: /etc/apt/sources.list.d/mozilla.sources: Permission denied" I am not sure how to resolve or continue.

Last command and output:

username@penguin:~ cat <<EOF > /etc/apt/sources.list.d/mozilla.sources Types: deb URIs: https://packages.mozilla.org/apt Suites: mozilla Components: main Signed-By: /etc/apt/keyrings/packages.mozilla.org.asc EOF -bash: /etc/apt/sources.list.d/mozilla.sources: Permission denied

Installing the latest version of Firefox and Debian 13.

Following the instructions in the Mozilla Support document Install Firefox on Linux https://support.mozilla.org/en-US/kb/install-firefox-linux

Operating as Super User.

Chose the option Install Firefox .deb package for Debian-based distributions (recommended)

Steps 1, 2, and 3 worked exactly as expected with in a terminal and using bash.

Step 4 and 5, following the For Debian Trixie and Newer choice does not work. A lot of digging on the internet and found that the command beginning with cat <<eof needs to be cat the second part of this process has same issue. appling new information solved problem both statements now work. p></eof>

At this point you have a directory /etc/apt/keyrings. In this directory you have the file packages.mozilla.org.asc Step 3 returns success. You have also successfully applied steps 4 and 5. In directory /etc/apr/souces.list.d you have the file mozilla.sources.

It contains the instruction “Signed-By: /usr/share/keyrings/packages.mozilla.org.gpg”

No where in the previous stepd was the file Signed-By: packages.mozilla.org.gpg ever created.

Why is the deb package looking in /usr/share/keyrings when step 2 puts a similarly named file Signed-By: /usr/share/keyrings/packages.mozilla.org.asc in /etc/apt/keyrings

Step 6

Running apt update returns

Err:4 https://packages.mozilla.org/apt mozilla InRelease  Sub-process /usr/bin/sqv returned an error code (1), error message is: Error: Failed to parse keyr ing "/usr/share/keyrings/packages.mozilla.org.gpg"  Caused by:     0: Reading "/usr/share/keyrings/p ackages.mozilla.org.gpg": No such file or directory (os error 2)     1: No such file or directory (o s error 2) Warning: OpenPGP signature verification failed: https://packages.mozilla.org/apt mozilla InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Error: Failed to parse keyrin g "/usr/share/keyrings/packages.mozilla.org.gpg"  Caused by:     0: Reading "/usr/share/keyrings/pac kages.mozilla.org.gpg": No such file or directory (os error 2)     1: No such file or directory (os error 2) Error: The repository 'https://packages.mozilla.org/apt mozilla InRelease' is not signed.

Help

This is a follow up of previous posts. Note to Wxie & Denys

Hello, the official mozilla page instructions for how to download Firefox for Linux (Debian 13) is wrong, it fails on Step 3 saying that the key verification is incorrect thus I have not tried the steps after 3.

I know Debian 13 comes with Firefox ESR but from my research this is packaged and maintained by Debian, I would prefer it if all my eggs were not in one basket and I actually had the real source maintainer updating my browser aka Mozilla.

I don't know what else to say, it is just incorrectly written or something, because Brave Browsers installation instructions are SOO much better and simpler, super easy works 10/10 times, and it's way fewer commands.

Please help, thanks!

I’m trying to install the latest version of Firefox on Debian, as described at https://support.mozilla.org/en-US/kb/install-firefox-linux#w_install-firefox-deb-package-for-debian-based-distributions. I’ve tried twice, several days apart, but both times things fail at the third step, with the fingerprint not matching. Can I do anything besides try again later? I’m using Firefox ESR, as packaged by Debian, in the meantime.

Good morning, today I downloaded Debian 13 Mate version and to install Firefox I entered the following commands taken from https://support.mozilla.org/it/kb/installare-firefox-linux#w_installare-firefox-tramite-il-pacchetto-deb-per-le-distribuzioni-basate-su-debian-consigliato and the commands were

sudo install -d -m 0755 /etc/apt/keyrings

wget -q https://packages.mozilla.org/apt/repo-signing-key.gpg -O- | sudo tee /etc/apt/keyrings/packages.mozilla.org.asc > /dev/null

echo "deb [signed-by=/etc/apt/keyrings/packages.mozilla.org.asc] https://packages.mozilla.org/apt mozilla main" | sudo tee -a /etc/apt/sources.list.d/mozilla.list > /dev/null

echo ' Package: * Pin: origin packages.mozilla.org Pin-Priority: 1000 ' | sudo tee /etc/apt/preferences.d/mozilla

sudo apt-get update && sudo apt-get install firefox firefox-l10n-it

but I get this result OpenPGP signature verification failed: https://packages.mozilla.org/apt mozilla InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Signature by 35BAA0B33E9EB396F59CA838C0BA5CE6DC6315A3 was created after the --not-after date.Il repository "https://packages.mozilla.org/apt mozilla InRelease" non è firmato.

What mistake could I have made? Apart from the fact that now we use sudo apt update && sudo apt install Thank you in advance for your response.

I try to install Firefox directly from the Mozilla repository.

For that, I read the article "Install Firefox on Linux" and followed the install instructions in first chapter "Debian-based distributions" step-by-step. (article https://support.mozilla.org/en-US/kb/install-firefox-linux)

Unfortunately, with every attempt to install Firefox, the Firefox LinuxMint (Ubundu) package will be still installed. The command to priorise the Mozilla Repository seems to have no influenace.

How can I prevent/avoid to use the LinuxMint/Ubundu repository? I wan't to install and update Firefox direct from Mozilla source.

I'm using Linux Mint 22.1 Xia base (Ubuntu 24.04 noble)

duplicate of /questions/1495342 thread

I try to install Firefox directly from the Mozilla repository.

For that, I read the article "Install Firefox on Linux" and followed the install instructions in first chapter "Debian-based distributions" step-by-step. (article https://support.mozilla.org/en-US/kb/install-firefox-linux)

Unfortunately, with every attempt to install Firefox, the Firefox LinuxMint (Ubundu) package will be still installed. The command to priorise the Mozilla repository seems to have no influenace.

How can I prevent/avoid using the LinuxMint/Ubundu repository? I wan't to install and update Firefox direct from Mozilla source.

I'm using Linux Mint 22.1 Xia base (Ubuntu 24.04 noble)

I'm running fedora open access software 64 bit. when I hit download firefox the computer runs it and it seems like it does it but I can't find it in downloads and it basically doesn't complete. What to do?