Greatest Hits

44
votes
9answers
264k views

How to fix “sudo: unable to open … Read-only file system”?

The title might not be as descriptive as I would like it to be but couldn't come up with a better one. My server's file system went into Read-only. And I don't understand why it does so and how to ...
71
votes
16answers
187k views

Blank screen after installing nvidia restricted driver

I've installed the current nvidia restricted driver and rebooted my machine and now I get a black or blank screen. How can I fix this?
435
22
votes
1answer
154k views

How to install uTorrent v3.3 on 14.04

I've attempted to install utorrent on 14.04 using the Terminal and attempting to install libssl 0.9.8, but with no success. Also, this utorrent version is V3.3 and is located in my Downloads. I've ...
222
votes
4answers
356k views

Can I move the Unity launcher?

I can’t get used to the new Unity system. I’d like to move the left Unity panel to the bottom of screen (like Windows 7 – more similar is better). But I can't find a way. Is it possible?
98
votes
7answers
96k views

Not enough free disk space when upgrading

I'm getting an error in software updater when I try and do my daily updates. it says: The upgrade needs a total of 25.3 M free space on disk `/boot`. Please free at least an additional 25.3 M of disk ...
450
74
votes
6answers
176k views

How to uninstall LibreOffice?

Which package should I remove to completely remove libreoffice? I have no need for office tools. That's the one gripe I have with package managers like apt, there's no simple way to perform the ...
79
votes
18answers
318k views

How do I install Adobe Flash player?

I have had significant problems with watching flash video in 64-bit Ubuntu. Does anyone know of a good way to get flash running on the platform?
55
votes
7answers
213k views

How do I find my internal ip address?

I have ubuntu server 12.04 installed so I have no GUI. When I do the command ifconfig, I cannot find my internl ip address. it says inet addr: 127.0.0.1 . here is output of ifconfig -a: eth0 link ...
28
votes
4answers
268k views

What is a command to compile and run C++ programs?

I am new to Linux. I am using Ubuntu 11.04 and do not know how to compile and execute C++ program in it. I need to know the commands to Compile and Execute a C++ program in Linux.
50
votes
8answers
320k views

SSH connection problem with “Host key verification failed…” error

I can connect to another Ubuntu machine in my LAN via SSH. On both of then PC's I installed openssh-server but from another Ubuntu computer I can not connect to my PC via SSH and I got this error: ...
306
193
votes
10answers
344k views

How do I get the CPU temperature?

How do I get the CPU temperature?
53
votes
3answers
412k views

How to restart samba server?

Sorry this is a little embarassing but I'm trying to set up my own server for the first time. I found great tutorial online. http://www.intac.net/build-your-own-server/ I'm stuck at the 2nd to last ...
190
289
votes
11answers
470k views

How can I configure Unity?

Are there any configuration options for the Unity desktop? There are multiple valid answers for this question spanning over several versions of Ubuntu. For your convenience an index of each below (...
191
116
votes
10answers
223k views

How to prevent “Write Failed: broken pipe” on SSH connection?

What can I do to configure SSH on both client and servers to prevent Write Failed: broken pipe errors? It often occurs if you sleep your client computer and resume later.
339
15
votes
1answer
56k views

Ubuntu 16.04 LTS Shown in Upgrade Manager Now

I see the next upgrade available as 16.04 LTS shown in update manager. But the release date (from wiki) is written as April 2016. And it's not shown in Ubuntu page yet. Why is it already available ...
132
votes
7answers
314k views

How to check hard disk performance

How to check the performance of a hard drive (Either via terminal or GUI). The write speed. The read speed. Cache size and speed. Random speed.
21
votes
9answers
111k views

ACPI PPC Probe failed. Starting version 219 NVIDIA

I've recently updated to Ubuntu 15.04 and after installing the latest nvidia drivers (346.59) which worked on ubuntu 14.10 seems to have caused some trouble on boot. All I get is the following when ...
82
votes
7answers
343k views

Adding SSH Keys to authorized_keys

I have an Ubuntu server on Amazon EC2, that I use for development, and today I stupidly cleared everything out of my ~/.ssh/authorized_keys file. Luckily I have an SSH open, so I am still connected, ...
77
votes
3answers
317k views

How to make a file (e.g. a .sh script) executable, so it can be ran from terminal

I have a script.sh file and type of this file is shellscript file. I want to make this file as application/x-executable file. How can I make it?
188
votes
13answers
371k views

How do I change the computer name?

When I connect to my server (ubuntu server 10.10), I get this: name@server-name.belkin ~> How can I remove ".belkin"?
275
94
votes
12answers
190k views

How to fix missing GPG keys?

I have just installed Ubuntu 12.04 and I added some repo and when apt-get update i got missing gpg key. Following command seems to doesn't work for me: apt-get update 2> /tmp/keymissing; for key ...
101
votes
10answers
182k views

network manager says “device not managed”

I used to be able to share my network connection by editing the Auto Eth0 to share with other computers in the Ipv4 section and now I upgraded my laptop to 11.10 . Now are there no wired connections ...
173
votes
1answer
325k views

How do I configure swappiness?

I need a step-by-step, simple and easy way to configure swappiness.
232
82
votes
5answers
285k views

How do I install Adobe Acrobat Reader deb package downloaded from Adobe website?

I am new to Ubuntu, but I believe I have Ubuntu 11.10 installed correctly. I am trying to install Acroread using AdbeRdr9.4.6-1_i386linux_enu.deb that I downloaded from the Adobe web site. How do I ...
48
votes
19answers
167k views

Shut down computer from keyboard

Is there a keyboard shortcut available to shutdown the computer? I know I can use the Power button, but I would like to be able to it from the keyboard. If such a shortcut does not exist already, ...
142
votes
7answers
381k views

How to restart X Window Server from command line?

How can I restart X Window Server from the command line? I'd really like to be able to restart my GUI without having to do a full system reboot.
139
votes
14answers
350k views

How to send mail from the command line?

How to send mail from the command line?
81
votes
7answers
290k views

How can I install on a non-PAE CPU? (error “Kernel requires features not present on the CPU: PAE”)

After burning Ubuntu 12.04 to a CD, I tried booting and got the message: This kernel requires the following features not present on the CPU: pae Unable to boot - please use a kernel appropriate for ...
72
votes
10answers
341k views

How do I kill processes in Ubuntu?

How do I kill all processes running by my own non-root account? I have some spinning smbd processes that I caused from my windows machine and so I telnetted into the linux server and I want to kill ...
33
votes
5answers
132k views

How to solve the phpmyadmin not found issue after upgrading php and apache?

Recently I have install the PHP, Apache, MySQL, phpMyAdmin, python in my Ubuntu Desktop 12.04.3 LTS to use it as a LAMP server. The commands I used to install these are given below: 1: sudo passwd 2: ...
73
votes
5answers
265k views

No such file or directory? But the file exists!

I've downloaded a game (Shank) but the bin file doesn't run. The error that is shown when I try to launch the executable is: bash: ./shank-linux-120720110-1-bin: No such file or directory
26
votes
5answers
204k views

Kernel requires an x86-64 CPU, but only detected an i686 CPU. How can I install Lubuntu/Ubuntu?

I'm trying to install Lubuntu on my laptop (sorta old 2005). [Laptop stats: Intel® Celeron® CPU 410 @ 1.46 GHz 1.47GHz, 448 MB of RAM] I press Install and this message appears: This kernel requires ...
43
votes
2answers
173k views

How do I install Chromium from the command line?

I have already tried using the Ubuntu Software Center, but it won't install the Chromium browser. How can I install it using the terminal?
38
votes
5answers
297k views

Detect and mount devices

I upgraded Ubuntu today and everything works smooth except that Ubuntu doesn't detect any other storage devices. My / and /home partitions work fine, but my other partitions are just not detected. I ...
90
votes
11answers
291k views

How do I mount shared folders in Ubuntu using VMware tools?

Experts. I've successfully installed VMware tools for Ubuntu. Everything seems to work fine, but shared folders were not mounted automatically. How do I get them to work? If I run vmware-hgfsclient ...
143
votes
6answers
280k views

How do I find the kernel version, Ubuntu release and disk partition information from the terminal?

Which commands will give me information about following using Terminal? Kernel Version Distribution version no. All partition size of the HDD
67
votes
5answers
407k views

How to enable root login?

I would like to enable the root account on my Ubuntu installation. I realize the security implications of this.
196
77
votes
8answers
207k views

How can I use Chromecast

I just saw the video about Chromecast and I am interested in knowing how can I enable this on my Ubuntu PC. My TV has an HDMI port.
152
votes
5answers
226k views

Why use apt-get upgrade instead of apt-get dist-upgrade?

I usually use apt-get update && apt-get upgrade to run my updates and upgrades instead of the GUI because it seems to run more quickly. However, I've noticed lately that I often get a ...
105
votes
4answers
175k views

How do I find out my motherboard model?

Is there a way to find what motherboard model I have? If yes, how, please?
339
20
votes
5answers
36k views

Steam Install Error on 14.04 Ubuntu 64bit

I have tried some of the solutions posted elsewhere in the support forum, one seemed like it worked but after a steam update i found myself back at square one I am a new Linux user and am already at ...
39
votes
4answers
158k views

unzip error “End-of-central-directory signature not found”

I try to unzip a zip file, but got an error: $ unzip COCR2_100.zip Archive: COCR2_100.zip End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one ...
393
61
votes
8answers
176k views

How to switch language keyboard combination?

I would like to type Hebrew in Ubuntu. I tried downloading the Hebrew language pack and then setting alt-shift as my layout-change shortcut in the Options section of "Keyboard Layout". However, when ...
179
votes
23answers
146k views

How can I deactivate Bluetooth on system startup?

How can I deactivate Bluetooth on system startup?
10
votes
4answers
202k views

How to run Terminal as root?

When we want to run a programs as root we use sudo, gksu, gksudo and etc. Now my question is how do we can run a Terminal as the root user in Terminal? I tried with using gksudo terminal and gksu ...
51
votes
3answers
323k views

find a file using the terminal

I am trying to find a directory, using the terminal and I am not sure where it is. I mean that i used the wget command to obtain the file and used it for installation and now i am not able to find ...
15
votes
5answers
228k views

Apt-Get Update: failure to fetch; can't connect to any sources

I realize there are dozens of "apt-get update: failure to fetch" questions (I read through all I could find), but my present circumstance is unique to 12.04 and it affects all sources; not just ...
54
votes
3answers
238k views

How can I uninstall a nvidia driver completely ?

As expected, Nvidia drivers have reduced my customizations. I can't login to Unity 3D session. I can't find any content to help me to uninstall the driver and I don't know what to do as I have never ...
18
votes
1answer
167k views

How to install g++ compiler?

I have tried the following: sudo apt-get install build-essential Reading package lists... Done Building dependency tree Reading state information... Done build-essential is already the newest ...
68
votes
4answers
114k views

Requires installation of untrusted packages?

I tried installing VLC Player yesterday, and I got the Requires installation of untrusted packages error. I searched for hours for a solution to this problem, and finally came upon a suggestion that ...