I am new to Linux and have been poking around a lot in Terminal. I launched Firefox from the command line and noticed that I began getting the below. It still opens and seems to run as it should. I don't remember seeing this before deleting Chrome or before using proxychains. Any thoughts?  (firefox:8321): GLib-GObject-CRITICAL **: g_object_ref: assertion 'object-&gt;ref_count &gt; 0' failed  (firefox:8321): GLib-GObject-CRITICAL **: g_object_unref: assertion 'object-&gt;ref_count &gt; 0' failed  (firefox:8321): GLib-GObject-CRITICAL **: g_object_ref: assertion 'object-&gt;ref_count &gt; 0' failed  (firefox:8321): GLib-GObject-CRITICAL **: g_object_unref: assertion 'object-&gt;ref_count &gt; 0' failed
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I tried to open Software Center using the command line   software-center   and it did work. I mean, Software Center opened and works fine, BUT, at the same time, in the Terminal window I see a lot of strange errors. How can that be? I'm puzzled.   Is there any explanation for this (and a fix for it)? I repeat, the app does open and it works fine, is only the lines in the background that show that something is not all right.  Here are the screen-shots with all the lines.
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Do not run this command to 'test' it unless you are prepared for a crash and/or force-rebooting your system.  I was in my Virtualbox running 12.04 trying to compile an app, and while waiting I happened to chance upon a forum where a comment said:   Try :(){ :|: &amp; };:  Fun, too, and doesn't need root.  Without thinking, I ran it in my gnome-terminal. It made my 12.04(in Virtualbox) lag so badly, I had to shut it down. My question is what does this command do?   :(){ :|: &amp; };:
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I have an Early 2015 MacBook Pro running OS X 10.11.6 (the latest version of El Capitan) that as of late had started randomly opening a website with the link fastlauncher.xyz [Thanks John Ramos: wouldn't be a good idea to try going to the link.] It does not happen often.    I have tried:   to use the latest version of Malwarebytes Anti-Malware for Mac; it did not detect the adware.  checking the browser extensions for Safari and Chrome, the two browsers I use; but do not see anything suspicious.  checking for Login and Startup Items, nothing suspicious restarting (I'm getting a bit desperate and maybe it'll work - it didn't) using BitDefender (30-day trial); solved the issue   I have not tried:   using only one browser and seeing whether the adware will go away (hence I am unsure whether it is a system virus or isolated to a browser)   So far, the link has only been opened in Chrome. I would prefer manual removal over a program. Will update this list as I go.
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Well, I installed Squid3 the other day and then installed Quintolabs, but I discovered this program squidguard that looks much easier to work with and configure and it looks like it would serve as a more adequate web filter for my needs.   I installed squidguard seemingly without a problem and I am following .  I am at the part when I just finished installing the blacklist and now I am trying to do a test run of squidguard with output to stderr using the command squidGuard -d (I am a total newbie with linux and am not that familiar with any commands or the file system or anything being used to Windows for so long).  This is what shows in the terminal which includes the error:  administrator@LinuxWebFilter:~$ squidGuard -d squidGuard: error while loading shared libraries: libdb-4.8.so: cannot open shared object file: No such file or directory   I have no idea what to do or how to fix this.  Can someone please help with this?
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When I launch nautilus from terminal the following error is printed and nautilus doesn't open up.  (nautilus:25179): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_-&gt;priv-&gt;connections != NULL' failed  (nautilus:25179): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_-&gt;priv-&gt;connections != NULL' failed Could not register the application: Timeout was reached  (nautilus:25179): Gtk-CRITICAL **: gtk_icon_theme_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed  (nautilus:25179): GLib-GObject-WARNING **: invalid (NULL) pointer instance  (nautilus:25179): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed   What could be the problem??
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The following error message occasionally appears in my terminal:  Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory   ... which is pretty annoying.  I have searched online for solutions to this error, without success.  Is there any way to at least identify the process responsible for sending these error messages to my terminal?  Let me clarify that, as far as I can tell, these error messages appear "out of the blue".  In fact, they appear asynchronously with respect to my interactions with the terminal (more often than not I see them for the first time when I return to a terminal window that has been unattended for some time).  I'm sure there's a definite, deterministic cause for these messages, but it is not one that I can readily identify.  In short, I have not noticed any pattern or regularity to their occurrence.  In particular, in my case their occurrence has nothing to do with running MPlayer, or any other video playback program.  (Please refer to .)  For one thing, the machine in question is a work machine, and I rarely watch any videos with it.  In the very few instances in which I've watched a video on this machine I've used VLC, not MPlayer, and these errors never appeared in these rare occasions that I used VLC.
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Just recently upgraded to 13.04 and am having trouble running TF2 via Steam. Whenever I start Steam I get a dialog saying:     OpenGL GLX context is not using direct rendering, which may cause performance problems.   Every time I go to launch TF2 I get a dialog saying:     Could not find required OpenGL entry pint 'glGetError'! Either your video card is unsupported, or your OpenGL driver needs to be updated.   I tried updating my Nvidia drivers, hoping that would solve this issue but alas, it did not. I believe this issue is related to a fix I used to get Skype working with 13.04, specifically . Just a heads up I'm using GNOME Shell 3.8.  Let me know if you need anymore information about my system.
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It was working properly before, suddenly it stopped working. When I tried to open by clicking on its icon, but nothing happens.  As already here are many questions related to this, but none of them are working for me. I already checked  and .  I uninstalled Chrome by following the instructions from .  sudo apt-get purge google-chrome-stable rm ~/.config/google-chrome/ -rf   Again I installed Chrome by:  sudo apt-get install google-chrome-stable   But the problem is still thesame.  When I enter google-chrome in terminal I get following error.  [12289:12323:0723/014456:ERROR:nss_util.cc(744)] Error initializing NSS with a persistent database (sql:/home/maddy/.pki/nssdb): libsoftokn3.so: cannot open shared object file: No such file or directory [12289:12323:0723/014456:ERROR:nss_util.cc(212)] Error initializing NSS without a persistent database: NSS error code: -5925 [12289:12323:0723/014456:FATAL:nss_util.cc(214)] nss_error=-5925, os_error=0
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I found another odd bug... but I can only repro it in Firefox (40.0.2 for OSX). It doesn't occur in Chrome or Safari. I understand that, if it is a FF only thing, there's possibly nothing you guys can do about it, but I thought I'd put this out here anyway.  I use the magic hyperlink button to create links because they're pretty. Recently I've been noticing that, when I use it, I can't use ↓ until I click outside the text area.  The process is pretty simple:   Write two lines of text (to make sure you have a "down" to go to). Highlight some of the text on the upper line. Click the hyperlink button or use Ctrl + L. Paste the link into the text area. Hit Enter/Return to close the dialogue. (Hitting the OK button will not repro the issue.) Try to use the down arrow&hellip;. No response.   As long as you don't click out of the text input area, you will not be able to use the down button. Even using your mouse to move the cursor to another spot doesn't make it work. The other three direction arrows work fine.  This may or may not be related to ... I don't remember running into this issue until the last week or so.
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For testing purposes, I want to install two different instances of firefox on ubuntu - so that they don't share cookies. (I want to simultaneously login with both instances as different users to our website).  How do I do that? I do it with Firefox &amp; Opera, but I prefer Firefox (because of firebug).
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fg, bg and jobs are used for job management. And for some reason (maybe it's just me), I'm not able to find where their binaries are nor their manpages (whereis prints no information). which gives no output. The commands themselves work just fine, though.  I ran commands like find /bin bg, but with no hits. I also ran find / bg to cast a wide net.
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I've just installed Ubuntu 16.04 LTS on dual boot. I've looked for many solutions and tried them all but Chrome never starts; the logo appears on the left but no window opens.  I downloaded the deb file on google chrome website and installed it through Ubuntu Software, but it doesn't start.   I have tried installing it through the command line with   sudo dpkg -i --force-depends google-chrome-stable_current_amd64.deb sudo apt-get install -f   I have checked with uname -a and my system is 64 bit. I have also tried gdebi with the same result.   My repository universe is up to date.  I only have one display in settings>displays> so I can't turn off built-in display nor check the mirror display (I read it could be the problem as I also have a graphic card but it seems it is not in my case).  Here is what I get in the command line when I try to run Chrome from it ( the message is the same, whatever the method I used to install Chrome):  ~$ google-chrome [11831:11831:1122/114854.195473:ERROR:process_singleton_posix.cc(433)] readlink failed: Permission denied (13) [11831:11831:1122/114854.195493:ERROR:process_singleton_posix.cc(256)] readlink(/home/basil/.config/google-chrome/SingletonLock) failed: Permission denied (13) [11831:11831:1122/114854.195508:ERROR:process_singleton_posix.cc(256)] readlink(/home/basil/.config/google-chrome/SingletonLock) failed: Permission denied (13) [11831:11831:1122/114854.195515:ERROR:process_singleton_posix.cc(280)] Failed to create /home/basil/.config/google-chrome/SingletonLock: Permission denied (13) [11831:11831:1122/114854.195538:ERROR:process_singleton_posix.cc(433)] readlink failed: Permission denied (13) [11831:11831:1122/114854.195564:ERROR:process_singleton_posix.cc(256)] readlink(/home/basil/.config/google-chrome/SingletonLock) failed: Permission denied (13) [11831:11831:1122/114854.195622:ERROR:chrome_browser_main.cc(1498)] Failed to create a ProcessSingleton for your profile directory. This means that running multiple instances would start multiple browser processes rather than opening a new window in the existing process. Aborting now to avoid profile corruption. [11831:11868:1122/114854.209297:ERROR:browser_gpu_channel_host_factory.cc(108)] Failed to launch GPU process.   Any new approach will be much appreciated
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When typing either of the commands nautilus . or xdg-open . into terminal, they execute correctly, but with a warning:  Nautilus-Share-Message: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)   As I say, it opens the file manager correctly and I can detect no further problems. There are several instances of users experiencing this message in other questions , but each of the questions either addresses a side-issue I'm not experiencing, or simply goes unanswered.    What does this message mean, and can I do anything to prevent it?
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When launching Chrome from the Windows command line I can pass arguments like so:  ...&gt;chrome.exe -incognito   I can also pass a URL to open:  ...&gt;chrome.exe google.com   Each work fine on their own, but I can't get them to work together.  What I want is to launch it with a URL, and open in its own tab, and hide the URL, buttons, etc., like a utility window, but I do want it resizable.
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When I run sudo gedit /path/to/some/random/file I get the following error    ** (gedit:6262): WARNING **: Command line `dbus-launch --autolaunch=7f8731869e1c690b8205727e0000000a --binary-syntax --close-stderr' exited with non-zero exit status 1: Autolaunch error: X11 initialization failed. Cannot open display:  Run 'gedit --help' to see a full list of available command line options.     Using gksudo doesn't help either which returns    Cannot open display:  Run 'gedit --help' to see a full list of available command line options.     Any help guys. I need to have this capability to open files in Gedit as root. I found this question with the same error but no solution     EDIT I found this post in . These are the instructions:     echo $DISPLAY # you'll be needing this value 3 lines below sudo -i # or "su -" on older Slackwares xauth merge ~alien/.Xauthority # use your own username here instead of "alien" export DISPLAY=:0.0 # use the value of DISPLAY you've seen 3 lines before     On coming to command #3, I got this error xauth:  file /root/.Xauthority does not exist    Maybe this new info can shed more light.
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I have firefox version 11.0 and am running ubuntu 11.10. Firefox takes upto 850MB RAM with only six or seven tabs opened and all the tabs loaded with light weight websites only. I wonder why would a browser consume so much memory. It keeps increasing its memory consumption over time. I have 3GB RAM and most of the times firefox consumes upto 30% of my memory. How do I fix this?   EDIT:   The output of the command sudo iotop -oPa as asked by @Jippie
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I just installed a fresh new Windows 2012 x64 Virtual Machine.  The very first thing I did was install Google Chrome.  When I went to the Dashboard, I get the following error (or it's made to look like an error).    So,   Anyone know what this error is all about? How can i 'fix' this?   Thank you kindly.  EDIT: Please don't suggest I uninstall G-Chrome as a fix.