Greatest Hits

15
votes
3answers
287k views

How to install Synaptic Package Manager?

I tried to install Synaptic Package Manager but I get the following error message: Package dependencies cannot be resolved. This error could be caused by required additional software packages which ...
148
votes
5answers
472k views

What is the correct way to install proprietary ATI Catalyst Video Drivers (fglrx) directly from AMD?

I am planning on doing a fresh install of Ubuntu and want to know what is the correct way to install ATI Catalyst Video Driver? There are multiple valid answers for this question spanning over ...
361
votes
12answers
288k views

“The following packages have been kept back:” Why and how do I solve it?

I just added a PPA repository for the development version of the GIMP, but I get this error The following packages have been kept back: gimp gimp-data libgegl-0.0-0 libgimp2.0 Why and how can I ...
50
votes
4answers
184k views

Boot Error - ACPI PCC Probe Failed

ACPI PCC Probe Failed is the error that pops up instead of the default GRUB loader after I updated my kernel to 3.19. I searched around and couldn't find much information except that it is a known ...
158
136
votes
25answers
222k views

How to fix Duplicate sources.list entry?

I keep getting this warning whenever I try to run sudo apt-get update. W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages ...
209
votes
3answers
435k views

What does “cp: omitting directory” mean?

I've issued the following command: sudo cp ~/Transfers/ZendFramework-1.11.4-minimal/library/Zend/* ~/public_html/cmsk.dev/library/ When I do this, I start getting the following messages: cp: ...
434
356
votes
8answers
302k views

How to enable hibernation?

In Ubuntu 12.04 and newer, hibernation has been disabled by default in policykit. How can I enable this back?
215
votes
7answers
443k views

What is the correct way to completely remove an application?

I've searched the net for such information and found different command lines, like these ones: sudo apt-get remove application sudo apt-get remove application* sudo apt-get remove --purge ...
55
votes
10answers
238k views

How to install NVIDIA.run?

I have a Nvidia Ge force Ge6150 SE graphics card. I am running ubuntu 12.04. When I try to install the .run file it fails. It shows the message like this: I Itried to install it after ...
131
votes
5answers
463k views

How to format a USB or external drive?

Using Ubuntu 11.10, how do I format an external or USB drive? I don't find an option to 'format' when I right click. In the new version, the drives don't come up on the desktop but instead come on ...
363
135
votes
12answers
275k views

How to check Internet Speed via Terminal?

Instead of going to sites like speedtest.net, or others, I want to check my current Internet speed from the terminal on Ubuntu. How can I do it?
288
votes
2answers
404k views

How to extract files to another directory using 'tar' command?

I thought tar archive.tar /users/mylocation would work, but it doesn't. How can I do that?
435
27
votes
5answers
239k views

Windows installer for Ubuntu 14.04 LTS onwards

Is there any windows installer(wubi) for Ubuntu 14.04 LTS? When I mount .iso file with daemon tools and run wibu.exe it just ask me if I want to reboot(I think it's usefull only when .iso burned on ...
273
109
votes
5answers
437k views

How to access a usb flash drive from the terminal? (How can I mount a flash drive manually?)

I only have access to the command line I need to backup my data (on the user folder) to a pen. I don't know where/how can I do this is order to access the pen, and then do the cp command. How can ...
47
votes
6answers
186k views

How do I fix a “Wireless is disabled by hardware switch” error?

I just updated to Ubuntu 12.04 from 11.10 but soon after updating I was disappointed to see that Wireless is disabled by hardware switch. I can not click the button 'Enable wireless' which is ...
46
votes
2answers
186k views

How to uninstall Google Chrome?

I decided to try out Google Chrome and see if it was any different from Chromium, but now I can't figure out how to uninstall it. That's what I have installed. How to get rid of it is the question.
253
votes
7answers
431k views

How do I change the hostname without a restart?

I want to change the OS hostname but I do not want to restart. I have edited /etc/hostname but it requires a restart to get implemented. How to avoid this?
68
votes
10answers
160k views

VirtualBox '/etc/init.d/vboxdrv setup' issue

I have installed VirtualBox through the software centre, but when I try to start a VM, I get the following error: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver ...
116
votes
12answers
436k views

How to format a USB flash drive?

In Windows there is a straightforward "Format" option in a flash drive's right-click pop-up menu. Where's that in Ubuntu?
148
votes
4answers
188k views

How do I patch/workaround SSLv3 POODLE vulnerability (CVE­-2014­-3566)?

After the BEAST attack and Heartbleed bug, now I've heard about a new vulnerability in SSL/TLS called POODLE. How do I protect myself against being exploited? Are only servers or also clients ...
224
votes
7answers
262k views

How to install software or upgrade from an old unsupported release?

Recently I have installed an older version of Ubuntu on my old machine. When ever I am trying to install any software it is giving error sudo -i apt-get install vlc The error being flagged is under ...
158
votes
5answers
309k views

How to increment a variable in bash?

How to increment a numeric variable in bash? I tried with var=$var+1 and var=($var+1) but it doesn't work. My variable is a number, but bash think that is a string. My bash version is ...
216
73
votes
6answers
461k views

How do I install .run files?

My PC has both Ubuntu and Windows 7 installed. I have installed all my drivers in Windows like Nvidia graphics, motherboard etc. Shall I install them in Ubuntu too? I looked on the web for my Nvidia ...
27
votes
5answers
248k views

“Unable to locate package” while trying to install packages by apt

When I try to install any package through the command line, I get an error. Can anyone help me on this? $ sudo apt-get install <package> Reading package lists... Done Building dependency tree ...
25
votes
3answers
374k views

What is the default root password?

I installed Ubuntu 12.04 LTS (Precise Pangolin), 64 bit. Nowhere was I asked to set password for root. I just installed AccuRev SCM software. It was installed under the /root folder by default. Now I ...
302
104
votes
16answers
278k views

Higher screen resolution in VirtualBox?

I've just installed Ubuntu 10.04 into VirtualBox on Windows 7. Unfortunately the only options showing for screen resolution are 640x480 and 800x600 and the monitor is showing as 'Unknown'. How ...
58
votes
4answers
240k views

How to successfully restart a network without reboot over SSH?

In Ubuntu 14.04 neither sudo service networking restart nor sudo /etc/init.d/networking restart do anything any more. They also both exit with code 1. Something has obviously changed (or half changed) ...
411
votes
44answers
316k views

What should I do when Ubuntu freezes?

All operating systems freeze sometimes, and Ubuntu is no exception. What should I do to regain control when... just one program stops responding? nothing at all responds to mouse clicks or key ...
43
votes
10answers
426k views

How to solve 'Connection refused' errors in SSH connection?

I have an Ubuntu Server 10.10 32-bit in my home. I'm making SSH connections to it from my PC via Putty. The problem is, sometimes I'm able to login seamlessly. However, sometimes it gives me an error ...
379
44
votes
7answers
204k views

An easy way to create a desktop shortcut?

I wonder, isn't still there an easy way to create a desktop shortcut in Ubuntu 14.04 (or Unity)? There is no context menu on desktop doing this. So I tried the following: I looked for an app I want ...
29
votes
3answers
325k views

How to change root password for mysql and phpmyadmin

I've set up mysql and phpmyadmin and chose not to set a password when installing hoping that once set up i could login with root and no password but i get the following error from phpmyadmin: Login ...
219
votes
7answers
176k views

How to add “Open terminal here” to Nautilus' context menu?

I am working on Ubuntu 12.04 64bit. I want to add "Open terminal here" to Nautilus context or right-click menu but it tries to download 32bit version from Internet.
88
votes
10answers
311k views

How to mount an ISO file?

I'm running into trouble trying to mount a large iso: dev@dev-OptiPlex-745:~$ sudo mount -o loop /home/dev/Hämtningar/matlab2011a_64.iso /cdrom mount: warning: /cdrom seems to be mounted read-only. ...
364
58
votes
16answers
316k views

How do I open a text file in my terminal?

There is a file named RESULTS.txt and I want to open this file in my terminal. (I mean I want to see the file contents be displayed in the terminal and not in some text editor) How do I do that ?
120
votes
22answers
146k views

How to disable the touchpad?

I want my touchpad to be disabled when I use my mouse. How can I do that? touchpad-indicator has stopped working on 11.10. It used to work on 11.04. Gnome3 is not a solution as I don't like it and ...
554
59
votes
7answers
246k views

How to create a bootable Ubuntu USB flash drive from terminal?

Is there any way to create a bootable Ubuntu USB flash drive from the terminal without using any third-party applications like YUMI,Unetbootin, etc. I tried to create a bootable Ubuntu flash drive ...
371
votes
6answers
355k views

How to upgrade a single package using apt-get?

How do I update a single package? As far as man apt-get says apt-get upgrade doesn't take a package/list of packages as parameter: upgrade upgrade is used to install the newest versions of ...
387
70
votes
4answers
446k views

How do I remount a filesystem as read/write?

I'm trying to mount an hfsplus filesystem in a Xubuntu 12.04 VM (kernel version 3.2.0-23-generic) but when I type mount -o remount, rw /dev/sdb3 in command line it returns not mounted or bad option. ...
21
votes
3answers
118k views

Install GNOME Desktop Ubuntu 15.04

How can I install Gnome Desktop on Ubuntu 15.04 with unity? Don't want to make a new clean install-- Any idea? Can't find any information about it!
37
votes
3answers
356k views

How to start GUI from command line?

I've installed the following version of ubuntu om my machine. ubuntu-12.04-desktop-i386.iso But when I switch on the computer, I get command line. Ubuntu 12.04 LTS COMP-1245 tty1 Once I ...
66
votes
11answers
159k views

How can I move all the window controls to the right (or left)?

Downloaded Ubuntu tweak and set window controls to the right side. Only some programs follow the rule. Pidgin as an example has window controls on the right. But Chrome, Thunderbird, Geany, still have ...
498
88
votes
8answers
255k views

How do I install Python 3.3?

I have downloaded Python 3.3 from the official site but no idea how to install it. I'm using Ubuntu 12.04
84
votes
17answers
229k views

Higher screen resolution for VirtualBox?

I have been trying this for a while but no luck. I installed ubuntu-11.10-desktop-i386 twice. Also installed guest additions. However I always get maximum screen resolution as, 1024 x 768. Do I need ...
101
votes
14answers
293k views

How can I install Windows after I've installed Ubuntu?

I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this? I can't lose my Ubuntu files, and I'm afraid that I might break GRUB.
102
votes
8answers
352k views

How can I resize an ext root partition at runtime?

How can I increase the size of the root partition of a system at runtime? I have a partition that is not allocated after the root partition (which is also ext4), how can I add that unallocated space ...
120
votes
13answers
201k views

How can I reduce the file size of a scanned PDF file?

I have a 72.9MB PDF file that I need to shrink into under 500KB. The file was a JPEG image that I had scanned, and then converted to pdf.
334
votes
15answers
304k views

How can I edit/create new launcher items in Unity by hand?

Will Unity allow making custom launcher icons from .desktop files or via menu editing system? (Right now the launcher doesn't give the option to "keep in launcher" on all programs. For some programs ...
163
votes
6answers
192k views

How can I recursively delete all files of a specific extension in the current directory?

How do I safely delete all files with a specific extension (e.g. .bak) from current directory and all subfolders using one command-line? Simply, I'm afraid to use rm since I used it wrong once and now ...
7
votes
3answers
119k views

How to use(/enable) FN keys to adjust volume at my asus laptop?

I have an ASUS laptop (ASUS X53S series) and I want to adjust the volume by using the FN key and F10 (mute), F11 (vol down), F12 (vol up). Also F9 key is not working as well(this is for ...
137
votes
10answers
182k views

How do I fix the GPG error “NO_PUBKEY”?

I added some extra repositories with the Software Sources program. But when I reload the package database, I get an error like the following: GPG error [...] NO_PUBKEY [...] I know I can fix ...
516