How to Start Firefox from the Command Line in Linux

This post will guide you how to start Firefox web browser from the command line in your Linux Operating systems. How do I Run FireFox from the command Line in CentOS or Ubuntu Linux.

• Start Firefox Browser
• Start Firefox to Open a Given URL
• Start Firefox to Open URL in A New Tab
• Open Firefox Browser Options
• Firefox Command Line Options

Start Firefox Browser

If you want to start your Firefox Browser in your Linux system, and you can type one of the following commands:

$ firefox

Or

$ /usr/bin/firefox

Start Firefox to Open a Given URL

If you want to start Firefox browser to open a given URL (such as: www.osetc.com/en) from the command line, and you can issue the following command:

$ firefox --new-window https://osetc.com/en/

Just see the below screenshot:

Start Firefox to Open URL in A New Tab

If you want to start Firefox browser to open a URL in a new tab in your browser, and you can use “—new-tab” option, type:

$ firefox –new-tab https://osetc.com/en

Open Firefox Browser Options

If you want to open Firefox browser options, and you can use “—preferences” option, type:

$ firefox –preferences

See below screenshot:

Firefox Command Line Options

If you want to get all command line options for firefox command, just type the following command:

$ firefox –help

Outputs:

devops@devops:~$ firefox --help
Usage: firefox [ options ... ] [URL]
where options include:

X11 options
--display=DISPLAY X display to use
--sync Make X calls synchronous
--g-fatal-warnings Make all warnings fatal

Firefox options
-h or --help Print this message.
-v or --version Print Firefox version.
-P  Start with .
--profile  Start with profile at .
--migration Start with migration wizard.
--ProfileManager Start with ProfileManager.
--no-remote Do not accept or send remote commands; implies
--new-instance.
--new-instance Open new instance, not a new window in running instance.
--UILocale  Start with  resources as UI Locale.
--safe-mode Disables extensions and themes for this session.
--allow-downgrade Allows downgrading a profile.
--MOZ_LOG= Treated as MOZ_LOG= environment variable,
overrides it.
--MOZ_LOG_FILE= Treated as MOZ_LOG_FILE= environment variable,
overrides it. If MOZ_LOG_FILE is not specified as an
argument or as an environment variable, logging will be
written to stdout.
--headless Run without a GUI.
--save-recordings Save recordings for all content processes to a directory.
--browser Open a browser window.
--new-window  Open  in a new window.
--new-tab  Open  in a new tab.
--private-window  Open  in a new private window.
--preferences Open Preferences dialog.
--screenshot [] Save screenshot to  or in working directory.
--window-size width[,height] Width and optionally height of screenshot.
--search  Search  with your default search engine.
--setDefaultBrowser Set this app as the default browser.
--jsconsole Open the Browser Console.
--jsdebugger Open the Browser Toolbox.
--wait-for-jsdebugger Spin event loop until JS debugger connects.
Enables debugging (some) application startup code paths.
Only has an effect when `--jsdebugger` is also supplied.
--devtools Open DevTools on initial load.
--start-debugger-server [ws:][  |  ] Start the debugger server on
a TCP port or Unix domain socket path. Defaults to TCP port
6000. Use WebSocket protocol if ws: prefix is specified.
--recording  Record drawing for a given URL.
--recording-output  Specify destination file for a drawing recording.
--remote-debugger [][:]
--remote-debugging-port  Start the Firefox remote agent, which is
a low-level debugging interface based on the CDP protocol.
Defaults to listen on localhost:9222.
-g or --debug Start within debugger
-d or --debugger Specify debugger to start with (eg, gdb or valgrind)
-a or --debugger-args Specify arguments for debugger

Conclusion

You should know that how to run Firefox web browser from the command line in your CentOS or Ubuntu Linux.