Greatest Hits

251
votes
5answers
234k views

What is the 'whoopsie' process and how can I remove it?

On one of my machines I have a process running called "whoopsie". I'm running 12.04 server and never specifically installed anything with this name. Google seems to imply that it has something to ...
213
votes
14answers
297k views

How do I start applications automatically on login?

How can I make an application automatically start when I have logged in?
205
238
votes
13answers
144k views

How can I remove Amazon search results from the dash or disable the feature?

How can I disable Amazon search results in the Unity dash?
71
votes
5answers
201k views

What is the equivalent of 'Control-Alt-Delete'?

On Windows anytime the system hangs Ctrl-Alt-Del brings up the Start Up Manager, from which you can end the program or process causing the hang. Is there any command like this on Ubuntu?
89
votes
6answers
71k views

No Dropbox icon in the indicator panel?

I have recently installed Ubuntu on my machine and everything has been working fine, except I don't see the Dropbox indicator. I have installed and re-installed Dropbox multiple times and can confirm ...
46
votes
5answers
192k views

Permanently removing apache2

It seems a simple apt-get remove apache2 does not completely remove apache2 as I can still see it on one of the processes when running top. How does one remove apache2 completely on his ubuntu server? ...
240
79
votes
4answers
290k views

Difference between the i386 download and the amd64?

What is the difference between standard i386 download and the amd64 download of Ubuntu 11.04? I am currently running the i386 on an amd machine, would my system work better with the amd64 download ...
96
votes
7answers
177k views

Whats the simplest way to edit and add files to “/var/www”?

Having installed the web server is there a simple way to set a user able to use the graphic interface to copy files and directories to the local web server /var/www I gave myself administrative ...
44
votes
3answers
291k views

How to run a checkdisk?

I suspect there might be bad sector on a disk. What tool is the best equivalent of the error checking tool of windows? (I used ext3)
194
102
votes
5answers
308k views

How can you completely remove a package?

I am trying to do a clean install of the octave3.2 package. To do this, I removed it, then tried to reinstall it. When I reinstalled, an error occurred. It could be a bug in the package, but I ...
80
votes
7answers
30k views

No more updates for Google Chrome | apt-get update error

I am using Google Chrome 48.0 32-bit. Today when I launched Google Chrome, I got this message: This computer will soon stop receiving Google Chrome updates because this Linux system will no longer ...
183
votes
6answers
169k views

What is the difference between adduser and useradd?

What is the difference between the commands adduser and useradd?
24
votes
7answers
174k views

How do I disable the “Nouveau Kernel Driver”?

I'm trying to install proprietary nvidia graphics driver I downloaded from nvidia website. It will not install because it says that the "Nouveau kernel driver" needs to be disabled first. I opened ...
275
62
votes
5answers
152k views

How do I save terminal output to a file?

How do I save the output of a command to a file? Is there a way without using any software? I would like to know how.
382
votes
10answers
366k views

What are PPAs and how do I use them?

I keep reading about Personal Package Archives ('PPAs') and people answer questions with a link to a PPA. What's the best way to use these? There are multiple valid answers for this question ...
176
66
votes
9answers
293k views

How to remove all files from a directory?

The closest I've gotten is # rm /path/to/directory/*.* but that doesn't work for files that don't have an extension...
178
votes
11answers
191k views

How to really clear the terminal?

I can issue the clear command or press Ctrl + L to clear the current Ubuntu terminal, but this just shifts previous output upwards and if you use mouse scroll or PgUP and PgDown keys it's hard to ...
39
votes
5answers
145k views

USB turn write protection off

Hi I have a USB which is write protected: dmesg | tail [10098.126089] sd 7:0:0:0: [sdb] Write Protect is on [10098.126098] sd 7:0:0:0: [sdb] Mode Sense: 23 00 80 00 [10098.126779] sd 7:0:0:0: [sdb] ...
306
132
votes
5answers
97k views

What is the CVE-2014-6271 bash vulnerability (Shellshock) and how do I fix it?

Recently, there have been news going around regarding "CVE-2014-6271" (See USN-2362-1), which is a vulnerability in Bash. How do I know if I am affected by this, how can I fix it, and why should I ...
49
votes
9answers
188k views

How do I install applications in Ubuntu?

How can I install applications like Google Chrome on Ubuntu? Are there any commands to install an application? For migrating or future ex-Windows users visiting this question: click here
68
votes
5answers
153k views

Global Installation of Composer (manual)

I followed composer manual (global installation of composer (manual)) to install composer on Ubuntu. $ ll /usr/local/bin/ total 4760 drwxr-xr-x 2 root root 4096 2012-03-29 08:29 ./ drwxr-xr-x 10 ...
289
99
votes
11answers
282k views

How to make a disk image and restore from it later?

I'm a new Linux user. I've reinstalled my Wubi from scratch at least ten times the last few weeks because while getting the system up and running (drivers, resolution, etc.) I've broken something (X, ...
222
163
votes
10answers
173k views

How to merge several PDF files?

There are a lot of software in Windows to merge PDF files but how can we do the same in Ubuntu?
314
120
votes
4answers
182k views

Find and replace text within a file using commands

How can I find and replace specific words in a text file using command line?
19
votes
6answers
205k views

SSH Public Key - No supported authentication methods available (server sent public key)

I have a 12.10 server setup in a virtual machine with its network set to bridged (essentially will be seen as a computer connected to my switch). I installed opensshd via apt-get and was able to ...
199
88
votes
1answer
196k views

How do I scan for viruses with ClamAV?

I installed ClamAV via Terminal (Ctrl+Alt+T) with: sudo apt-get install clamav but how can I scan for viruses?
27
votes
7answers
199k views

How do I convert .ts files into something useful?

I have a file that ends in .ts, which according to wikipedia is an MPEG2 file. I've never run into a file like this so I want it want the file to be in a more common format/container to use on ...
46
votes
3answers
161k views

How to create UEFI-only bootable USB live media?

Having live media that can boot both ways can be a problem when installing Ubuntu onto currently available Windows 8 computers. In other words the key advantage to creating UEFI-only bootable USB ...
169
votes
2answers
236k views

How do I install different (upgrade or downgrade) PHP version in still supported Ubuntu release?

I am trying to update to install PHP 5.5, 5.6 or 7.0 in Ubuntu 12.04/14.04/16.04 LTS, and I can only get PHP 5.3.10 for Ubuntu 12.04, PHP 5.5.9 for Ubuntu 14.04 or PHP 7.0.4 for Ubuntu 16.04 using ...
201
20
votes
5answers
162k views

How to compile a python file?

I have started learning python and I'm also a new user to Ubuntu. I need to know the ways of compiling the .py files. I have tried with the command python "hello.py" What are the other ways of ...
41
votes
8answers
120k views

How do I delete the entire history (Recently Used Items) in the dash?

I want to delete all the history of the unity dash about files, videos, text files, images, etc. I find it surprising that the best thing that activity log manager can do is to delete the history of ...
23
votes
4answers
144k views

How to check opened/closed port on my computer?

I was wondering how to check the opened/closed port on my computer. I used netstat -a on command line, Is the port status "LISTENING" indicated that the port is opened? Any port that are not shown in ...
58
8
votes
4answers
99k views

Broadcom B43 WiFi not working in Ubuntu 14.04 LTS

I have installed Ubuntu 14.04 LTS on my laptop. Under the networking menu at the top, it is not showing any WiFi options. How can I get Wifi working in Ubuntu 14.04 LTS? I have a Broadcom BCM4311 ...
25
votes
1answer
163k views

How to solve jitter (or stutter) playback via Chrome flash plugin?

Since the update to 12.04, there's been a problem specifically related to audio/video playback in Google Chrome. The problem only affected the Google version but not the Chromium nor the Firefox ...
29
votes
8answers
97k views

Why is my Apache not working after upgrading to Ubuntu 14.04?

[aman@aman-Inspiron-1440:~$ apache2 [Mon Apr 21 17:36:38.019213 2014] [core:warn] [pid 4134] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined [Mon Apr 21 17:36:38.019345 2014] [core:warn] ...
92
votes
6answers
198k views

What happened to the ia32-libs package?

The ia32-libs package is no longer present in Ubuntu 12.04 repositories for a 64bit system. Are there any available replacement packages available for download?
234
68
votes
8answers
85k views

Skype can't connect

After I restarted my computer to finish a upgrade, I could not log in at Skype anymore. It only shows the message: Skype can't connect. If I try web version it works. I'm using Skype 4.2.
232
34
votes
10answers
18k views

Dropbox icon is not working Xubuntu 14.04 LTS 64

A few hours ago the dropbox icon in Xubuntu 14.04 stopped working. The icon is black with a red slashed zero. I cannot click on it to bring up the dropbox menu. I believe there was an update right ...
112
votes
5answers
255k views

How do I add a user to the “sudo” group?

In /etc/sudoers I see this: # Allow members of group sudo to execute any command after they have # provided their password # (Note that later entries override this, so you might need to move # it ...
27
votes
2answers
116k views

How do I install drivers for the Atheros AR8161 Ethernet controller?

I have installed Ubuntu 12.04-64 bit on my Lenovo IdeaPad laptop, and the wired Ethernet (LAN) connection doesn't work. Running the lspci -vv | grep Atheros command from the terminal shows me I have ...
103
votes
4answers
182k views

Execute sudo without Password?

Inspired by this question.... I am the sole person using my system with 12.04. Every time I issue a sudo command; the system asks for the user password (which is good in its own way). However I was ...
42
votes
7answers
140k views

Installing and testing CUDA in Ubuntu 14.04

I am uncertain about how to install CUDA in my system. looking around there are many tutorials about cuda on 12.04 LTS and a few on 13.04 and 13.10, but they all talk about acquiring a deb package ...
50
votes
12answers
116k views

How do I add minimize / maximize buttons to GNOME shell windows?

Just installed Ubuntu 12.04, then I did sudo apt-get install gnome-shell and windows have only a close button, how can I enable minimize / maximize? The old gconf-editor doesn't seem to work cause ...
9
votes
2answers
103k views

Install iTunes on Ubuntu

I've always been an Ubuntu lover, but the only thing that holds me back from installing ubuntu on my laptop is iTunes. I have an iPad and an iPod touch and managing them without itunes is almost next ...
295
35
votes
2answers
170k views

How can I install GTK themes on Ubuntu?

How can I install themes in ubuntu 12.10 ? For example, how can I install the following themes on ubuntu: GrayDay Elegant+Eggplant
224
65
votes
8answers
229k views

How to update kernel to the latest mainline version without any Distro-upgrade?

Currently I'm running Linux-3.0 and I want to update it to Linux-3.3.1 the latest stable kernel release as mentioned at http://www.kernel.org. Can I update to 3.3.1 in Ubuntu without any risk of ...
159
votes
4answers
209k views

What do the different colors mean in the terminal?

What do the different colours in Ubuntu's terminal mean? For example, when I type the ls command in one of my folders, I get one of the files in light green, the other (which is a folder) in blue with ...
124
votes
3answers
285k views

How can I configure a service to run at startup

I have a daemon that runs fin if I start it manually with the service command: ricardo@ricardo-laptop:~$ sudo service minidlna start * Starting minidlna minidlna ...
68
votes
3answers
203k views

How to set JAVA_HOME for Java?

I've installed a version of Java. How can we set the $JAVA_HOME environment variable correctly?
198
52
votes
2answers
157k views

Change password on root user and user account

Just want to ask, if i change the password on the root user, is that going to automatically change the password to on the user account? i found this link to change the root user ...
132