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Closed 5 days ago.
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My Kali machine is a t2.micro and is responsive when i ssh into it and am able to open it on VNC viewer and is responsive and all, until i open firefox and it becomes practically unresponsive/frozen, and doesnt take any input until many minutes afterwards. Ive seen answers to where i need to update firefox but it is so unresponsive, it is practically impossible. is there a way to fix it or update it through the command line when ssh-ing into it? any help would be greatly appreciated, thank you.
I just want to browse to hackthebox.com for a school assignment, and it wont even allow me to click anything after the web browser opens, it freezes up.
This is probably a resource issue as t2.micro only has 1gb of ram and firefox can hog cpu / memory resources.
I'd try a more robust ec2 instance or you can run through these troubleshooting steps firefox has.
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Closed 6 years ago.
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I've genuine windows 7 laptop(Sony vaio - i3).
My system is too slow in normal mode that win10 installer does not run.
But it's system is faster if I'm in safe mode.
How do I upgrade my OS to windows 10 in SAFE mode ?
I think you should try and fix the issue of your computer running slow. There are lot of things that can make your system run slow. But you should try run cleanup and defrag ur hard drive. Also disable some start up programs and reduce apps running in background.
Concerning upgrading to Windows 10, it is not necessary you have to use media creation tool. You can download an ISO file online and create an installation media with it. You can get windows 10 iso file from websites like getintopc. Less I forgot, try and download November update ISO file.
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Closed 7 years ago.
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I have Fedora 11 installed on VirtualBox. By accident some files in /var directory were damaged or removed(I don't know what exactly). Now when trying to run Fedora, it goes untill choosing the user and freezes. No reaction at mouse and keyboard clicks. Does anyone have any suppositions how to run it, or at least how to retrieve files from virtual machine? I booted it to the terminal where I updated all what is possible - gnome, etc...But still no result.
It's impossible to know what happened without knowing what got removed. However, a great way to get your files out is using scp. Good examples for this can be found here.
Alternatively, if you've installed the Virtualbox Guest Additions you can use a USB drive to retrieve your files. There's a pretty good tutorial on how to get your USB drive working on VBox here.
If you want my best guess as to what's wrong, something in your /var relating to your GUI got removed, as from what I understand you can still boot to your command line. My suggestion would be to get what you need off the machine using the above tools and get a fresh install.
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Closed 8 years ago.
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I set up a virtual machine with Ubuntu Server edition.
When I boot it up, the output from the console appears on VirtualBox's virtual screen. This means the machine is wasting resources trying to display output on a screen. It's just a text terminal, I know, but it still requires resources. Why waste them when I'm going to only access remotely through PuTTY?
I know that VirtualBox can start a virtual machine in "headless" mode, but I fear it will just disable VirtualBox's output window, with no real impact on the virtual machine itself.
My questions are:
Will my virtual machine still detect a monitor attached when it runs in headless mode?
If so, how big is the performance impact of this situation? Is there any way to avoid it?
It does not require any additional resources. Just a tty device and a blocking getty process which requires no CPU resources and which has would both have been created anyway. (Every Linux system that I know starts 6 ttys by default).
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Closed 9 years ago.
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does anybody know, if there is a desktop environment for linux-distros, that is completely based on terminals, but still is able to let the commands create windows (e.g. a browser, an email-program, multimedia, ...)?
Background is, that i want to use my old laptop again - but he is pretty slow and every little performance-saver would help a lot. Also i don't need much besides the terminal, email und a browser.
My research only brought up solutions, where the basic desktop-environment still runs in the background and though still uses system capacity.
Thanks in advance
I read about fvwm2. I also used it ( though it needs Xorg if I remember correctly ). Very minimalistic.
http://www.fvwm.org/
You must choose if you want a pure terminal (No X Server) and use apps like mutt for email and w3m for websurfing, or if you want a light desktop environment like openbox, i3wm, awesome...
You should look at MiniLinux distros, like DSL, or SliTaz
I have an old laptop which runs smoothly with SliTaz, but try and find which is best for you.
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Closed 9 years ago.
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Assume I have a server already functioning and providing an app to users. At one moment, I have to modify some crucial /etc/ configuration files. For example, /etc/security/limits.conf.
After I do the changes, documentation usually suggests rebooting the machine.
reboot
But this would imply that all processes in the server die, am I right? So, basically what will happen to the guys checking my app hosted on the server that I just "rebooted"? I think the service will stop for a while. Is there any other command or alternative less painful to do after changing crucial files?
I'm on CentOS & Nginx.
PD: If somebody could provide also a link to the difference between "shutdown" and "reboot" (because I found only some vague things), that would be great.
Easy part first - if you run shutdown your computer ends up being off. As in no power. As in, very difficult to fix remotely :). Reboot restarts everything.
It is fairly rare to require a reboot under linux - the only reason to reboot that I can think of is if you upgraded the kernel, if your machine is crashing really badly, or if you want to install some types of new hardware (RAM, plug-in cards etc).
Mostly, when you edit "important files in /etc", you can restart just a part of the system. For example, you might need to restart just your webserver.
There is no complete rule. Try googling "reload ". For example, googling "reload /etc/security/limits" suggests logging out, then logging back in.