Command line for Linux to detect http errors 404 500

Hello! I'm using firefox in tinycore linux to show chromeless some websites but sometimes the screens go white. As this is nothing that happends all the time just doing a… (read more)

Hello! I'm using firefox in tinycore linux to show chromeless some websites but sometimes the screens go white. As this is nothing that happends all the time just doing an F5 or refresh helps to restart the page and works fine. I need help to: Detect the white screen in firefox with a script in bash if possible.

I've searched for firefox command line but I can't find more deep command line to get this error and then execute a script to fix this.

The help from firefox -h I get is this

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.
 --full-version     Print Firefox version, build and platform build ids.
 -P <profile>       Start with <profile>.
 --profile <path>   Start with profile at <path>.
 --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 <locale> Start with <locale> resources as UI Locale.
 --safe-mode        Disables extensions and themes for this session.
 --allow-downgrade  Allows downgrading a profile.
 --MOZ_LOG=<modules> Treated as MOZ_LOG=<modules> environment variable,
                    overrides it.
 --MOZ_LOG_FILE=<file> Treated as MOZ_LOG_FILE=<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.
 --ssb <uri>        Open a site specific browser for <uri>.
 --browser          Open a browser window.
 --new-window <url> Open <url> in a new window.
 --new-tab <url>    Open <url> in a new tab.
 --private-window <url> Open <url> in a new private window.
 --preferences      Open Preferences dialog.
 --screenshot [<path>] Save screenshot to <path> or in working directory.
 --window-size width[,height] Width and optionally height of screenshot.
 --search <term>    Search <term> with your default search engine.
 --setDefaultBrowser Set this app as the default browser.
 --first-startup    Run post-install actions before opening a new window.
 --kiosk Start the browser in kiosk mode.
 --jsconsole        Open the Browser Console.
 --jsdebugger [<path>] Open the Browser Toolbox. Defaults to the local build
                    but can be overridden by a firefox path.
 --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:][ <port> | <path> ] Start the devtools server on
                    a TCP port or Unix domain socket path. Defaults to TCP port
                    6000. Use WebSocket protocol if ws: prefix is specified.
 --recording <file> Record drawing for a given URL.
 --recording-output <file> Specify destination file for a drawing recording.

Asked by Fernando 24 minutes ago

can't sign in to one of my google accounts, but I can on another

one of my google accounts, which I have been able to sign in through firefox for years, suddenly started giving me an error message after entering my email address on the… (read more)

one of my google accounts, which I have been able to sign in through firefox for years, suddenly started giving me an error message after entering my email address on the google sign in page. I have another google account and I'm able to sign i using firefox just fine. The error message given is:

This browser or app may not be secure. Learn more Try using a different browser. If you’re already using a supported browser, you can refresh your screen and try again to sign in.

I'm using a windows 7 box and Firefox 85.0.2.

I'm able to sign in just fine when I use google chrome. I've cleared cache and data in the browser. I'm not sure what else to try. Any suggestions? Any other information I can provide to help identify the problem?

Asked by vseavello 1 week ago

Last reply by vseavello 24 minutes ago

profiles

Hi ! Firefox asked me again to create a new profile. Third or forth time within a month or two. Nothing serious, I have to admit, takes a few minutes to recover bookmarks… (read more)

Hi !

Firefox asked me again to create a new profile. Third or forth time within a month or two. Nothing serious, I have to admit, takes a few minutes to recover bookmarks, reset duckduckgo as default search engine, etc., but why is it happening? Version 87.0, Windows 10, 64 bit.

And while I'm here... I use to download a lot of webpages, for information purposes, it's easier than to bookmark them all. Doesn't work correctly for a while now, they are not saved as webpages, but as something resembling html-format (or however to describe it)... Still working with Edge and Opera, so it must be a Firefox issue. And after each update Firefox was reset to French language automatically one or two days later, this also does not happen any more. I'm neither English nor French native speaker, so again, not a real problem, but why is it happening? or rather not happening any more?

Just curious... Thanks in advance for any hint Best regards Michael

Asked by micha.hoelt 19 hours ago

Last reply by micha.hoelt 1 hour ago

Is there a setting hidden somewhere where I can force my preferred date format? Why do I have to contend with the dreadful date format when when visiting mozilla.org in english?

Hi! Since most content is in English and search engines always link to the English version, I usually browse the english version of mozilla pages. But here on support in … (read more)

Hi!

Since most content is in English and search engines always link to the English version, I usually browse the english version of mozilla pages. But here on support in particular I have to contend with the pathetic date format where you can't tell which is day or month or year. So why can't I find a way to set the date format. Even the majority of tiny websites/forums have an option to specify the date format.

Asked by avada 2 hours ago

Remote control in browser bar every time I start up Firefox

Every time I close out Firefox and then restart it, the browser address bar has an orange stripe with a robot icon that says my browser is in remote control mode. I have … (read more)

Every time I close out Firefox and then restart it, the browser address bar has an orange stripe with a robot icon that says my browser is in remote control mode. I have to go into the about:config panel and search for the "Marionette" options. If I toggle the two settings that are true/false and restart, the remote control goes away. I did not install this feature, I have no idea how to use it, I don't need it, and I'm tired of having to do this every time I open Firefox. It's ridiculously annoying to the point that I'm ready to start using another browser. The internet has NO practical help on how to fix this for anyone who is not an expert in computer code. I need a permanent fix for this pesky and annoying bug.

Asked by msand1126 2 hours ago

Trouble restoring firefox from backup

Hi, After losing my session history and bookmarks from using firefox's "forget last 5 minutes" feature on accident, I used shadowcopyview to create a backup of my old pro… (read more)

Hi,

After losing my session history and bookmarks from using firefox's "forget last 5 minutes" feature on accident, I used shadowcopyview to create a backup of my old profile. Now, after two reinstalls, I still cannot recover my session or bookmarks, even when replacing the old profile entirely.

JeffersonCher's wonderful scrounger has helped me to recover from a similiar blunder in the past, but this time, attempting to recover the session from a recovery file gave me 3 websites I haven't visited in 2 years and an error message when attempting to recover the bookmarks.

Anything you can provide would be a big help: I am very confused on how to really proceed.

Thanks!

Asked by Pendragonchen1 2 days ago

Last reply by Pendragonchen1 2 hours ago

change "mailto"

Hello, I'm reposting this question in better topic. After loading Firefox to 87.0 Now when I click on a "contact" button from a site I get 'courrier' from Microsoft. How … (read more)

Hello, I'm reposting this question in better topic. After loading Firefox to 87.0 Now when I click on a "contact" button from a site I get 'courrier' from Microsoft. How can I get my xxx@free.fr address (zimbra mail) instead. Help from mozilla doesn't help me! Years ago the same problem was solved with a button on the first opening of the mail box.

Asked by lanzarote 2 days ago

Last reply by lanzarote 5 hours ago

Ctrl key suddenly crazy zooming

All of a sudden when I hit the ctrl key my screen starts zooming in like mad. this is without pressing + or minus or touching my mouse. Means I'm not longer able to use c… (read more)

All of a sudden when I hit the ctrl key my screen starts zooming in like mad. this is without pressing + or minus or touching my mouse. Means I'm not longer able to use control C or Control V for copy and paste, and it's driving me mad. Any help?

Asked by kmerc 2 days ago

Last reply by kmerc 5 hours ago

Firefox not loading JS and CSS files

Firefox 87.0 / MacOS, in safe mode, with and without enhanced protection. Mostly after clearing cache. Server is Apache, running WordPress. Other browsers (Chrome, Opera… (read more)

Firefox 87.0 / MacOS, in safe mode, with and without enhanced protection. Mostly after clearing cache. Server is Apache, running WordPress.

Other browsers (Chrome, Opera, IE) have no problems.

Using HTTPS.

Page itself (HTML) loads correctly. The referenced (linked) files do not load, even though they are on the same server.

When I look at the Network Analysis tab, I see that the CSS and JSS files have no return codes, and show 0 Bytes transferred. It does not show the data coming from the cache. A detailed look at the request looks normal, the answer is not available. When I resend the request I get an answer, no problem.

No messages in the console.

It seems to have something to do with the server, when I deactivate certain WP plugins, the problem disappears. Perhaps the problem is worse when the server is slow... cannot prove this.

I am looking for what I can do on the Apache side to fix the problem.

Thanks in advance, Ron

Asked by otrok7 22 hours ago

Last reply by otrok7 5 hours ago

Default folder is no longer last folder uploaded from??

When i upload files, the default folder that Firefox always opened was the folder from which I last uploaded a file. This is no longer the case. Now however, since abou… (read more)

When i upload files, the default folder that Firefox always opened was the folder from which I last uploaded a file.

This is no longer the case.

Now however, since about a month or two ago, when I try and upload a file, Firefox always opens one particular a folder on my website instead of the last folder I uploaded a file from.

Please, any way out of this trap?

I want Firefox to open the last folder that I uploaded a file from.

Thanks

Asked by ririri 6 hours ago

Turn off the one click "select all text"

For search and navigation fields, this thread discusses this https://support.mozilla.org/en-US/questions/1168290 But it's not working for me. I tried both of these, fal… (read more)

For search and navigation fields, this thread discusses this

https://support.mozilla.org/en-US/questions/1168290

But it's not working for me. I tried both of these, false and true, but text still gets selected after one click like before any alterations were made

   browser.urlbar.clickSelectsAll
   browser.urlbar.doubleClickSelectsAll

Asked by noel_envode 4 days ago

Last reply by noel_envode 10 hours ago

no display & no options

web pages don't display but address is shown at tabs, can't see options but other menu options seem to be okay. I uninstalled and erased all related data (I could find) m… (read more)

web pages don't display but address is shown at tabs, can't see options but other menu options seem to be okay. I uninstalled and erased all related data (I could find) multiple times and reinstalled multiple times but problem remains. I tried refresh, safe mode, etc. At installation I get error VCRUNTIME140_1.dll not found, a susequent installation finishes without errors. I am sending this from another system because I can't use the problem unit for this post. The problem system is similar to this one. I am puzzled and seek help.

Asked by tregxoferif 13 hours ago

Separate Home Page from New Windows

Upgraded to a new Firefox version. Lost the ability to separate the Homepage from New Window behaviour. Is there no way to specify these two things separately? It seemed … (read more)

Upgraded to a new Firefox version. Lost the ability to separate the Homepage from New Window behaviour. Is there no way to specify these two things separately? It seemed to be working fine when I first upgraded, but in the options it shows everything as "Blank Page", so if I want to change my homepage URLs, I have to set it to that and if I do that, it undoes the separation of the homepage and new windows and I have to go set it again in about:config...? One of my most used features was this separation of the Homepage with New Windows, gave me a lot of control.

Asked by neijyry 1 day ago

Last reply by neijyry 16 hours ago

Firefox browser

My Firefox forgets that I want to use Windows standardapplication (Acrobat reader) when clickin on a .pdf-file. Firefox wants me to save the file after updates. Does anyo… (read more)

My Firefox forgets that I want to use Windows standardapplication (Acrobat reader) when clickin on a .pdf-file. Firefox wants me to save the file after updates. Does anyone have a solution for this issue?

Asked by bjornsylwan 1 day ago

Last reply by bjornsylwan 19 hours ago

Saving to wrong location

deets: v87 via flatpak on debian(buster) No matter where I save a file the lastdir is always "/run/user/1000/doc/*some random folder name, that changes each time*". manu… (read more)

deets: v87 via flatpak on debian(buster)

No matter where I save a file the lastdir is always "/run/user/1000/doc/*some random folder name, that changes each time*".

manually changing browser.download.lastDir causes the next attempt to save to go to the desired folder, but a second attempt reverts to /run/user/1000/doc/abcd123.

Has anyone any idea whats going on?

Asked by buckmulligan26 1 week ago

Last reply by buckmulligan26 22 hours ago

Public computer

I've been able to sync my firefox account on a university computer until 2 weeks ago. Now when i login to the university computer (in the classroom where I teach), my acc… (read more)

I've been able to sync my firefox account on a university computer until 2 weeks ago. Now when i login to the university computer (in the classroom where I teach), my account "logs in" but nothing syncs (no bookmarks or passwords).

I haven't changed anything with my account. How can I access my synced info on this University computer?

Asked by Uly Dor 23 hours ago

''Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.''

I am using Windows10, Version 20H2 (OS Build 19042.928) with all available patches installed as of 04/14/2021, and am using Firefox 87.0 (64-bit) as the default browser. … (read more)

I am using Windows10, Version 20H2 (OS Build 19042.928) with all available patches installed as of 04/14/2021, and am using Firefox 87.0 (64-bit) as the default browser. I have suddenly begun to get the subject error message (Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.) in Firefox, whenever I try to open an email web link from within Thunderbird. Until a few days ago, the email web link always opened up in a new Firefox browser tab.

If I change the default browser to something else, the email web link opens in a new tab in that browser.

I have tried every solution that has been recommended in this support forum to no avail. The error pops up even when Firefox has been started in safe mode. I have created new profiles to no avail. I have even gone so far as to totally uninstall Firefox, then manually rename all of the Firefox directories in my user profile and then install a clean version of Firefox. So far, I have not been able to get rid of the problem.

Any suggestions would be appreciated.

Asked by gczerw 1 day ago

Last reply by gczerw 23 hours ago

Get my sync files

I have an email account I don't ha e access to anymore and i really need to sync with that account with that email. I don't know what to do

Asked by niliaskane 1 day ago