For user-specific configuration, you can place the policies.json file in the ~/.mozilla/firefox// directory, where is the name of the Firefox profile. On Linux systems, you can use the policies.json file to configure Firefox system-wide or for a specific user by placing the file in the appropriate location.įor system-wide configuration, you can place the policies.json file in the /etc/firefox/ directory. The policies.json file is used to configure Firefox using Group Policy Objects (GPOs) on Windows systems. Note that some of these options may be experimental or unsupported, and changing them may have unintended consequences. This will open a page with a list of advanced configuration options that you can modify. You can access advanced configuration options in Firefox by typing "about:config" in the address bar and pressing Enter. You can access the configuration options by going to the menu (the three horizontal lines in the top-right corner of the window), selecting "Preferences" and then navigating to the settings you want to modify. The easiest way to configure Firefox is through the graphical user interface (GUI). If you see potential to improve the answer, feel free to edit and improve it.įirefox and Firefox ESR (Extended Support Release) can be configured on various configurations files and methods: If you don't use Firefox but the more configurable Firefox-esr, swap the two following entries in If you have installed Firefox or Firefox-esr and what the installation location is called, you can use the following query: whereis firefox The file locations are for a system-wide configuration: /etc/firefox/policies/policies.jsonįor one that is limited to the user, they are: /etc/firefox/profilename/prefs.js Policies.json, this file can be edit by hand They are also only of limited use, since they are not protected against changes by users, Mozilla or unfriendly software.Ī file based configuration is possible through the following files: user.js, you can edit by hand, changing will be added by next FF start on prefs.js The above configurations are only valid in the FF profile in which they were made and are overridden by user-wide and even more so by system-wide defaults. Do it only by the way above.Ī further and more extensive possibility than the before mentioned, exists over the browser line, over the call: The configuration will be saved on: prefs.jsĭont edit this file by hand. Or via the browser line via: about:preferences Via the GUI of Firefox which can be accessed either via: In addition to different update cycles, the ESR currently has access to additional policies that are not available on rapid release.Firefox can be configured in both file and non-file based ways. Speaking of Firefox ESR, Mozilla says that version of the web browser "receives major updates on average every 42 weeks with minor updates such as crash fixes, security fixes and policy updates as needed, but at least every four weeks. LMDE 4 will instead move users to the normal "rapid release" variant. One small tidbit of information is interesting, however Linux Mint Debian Edition 4 (code-named "Debbie") will ditch the Mozilla Firefox ESR web browser. Today is November 1, and the Linux Mint developers have shared some monthly development news that is largely boring. Then why does it exist? Believe it or not, it exists (partly) to serve as a contingency plan in case Ubuntu ever stops being developed. But did you know there is a different version of the operating system that is instead based on Debian? It's true! Called "Linux Mint Debian Edition," or "LMDE" for short, it is far less popular than the "regular" Mint. Linux Mint is based on Ubuntu - that is pretty common knowledge.
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