Most Popular
1500 questions
141
votes
11 answers
How can I convert audio from MP4 or FLV video files to mp3?
Is there an application that allows me to extract the audio from a MP4 or FLV video file and store it as an MP3 file for use in a portable media player?
b-ak
- 4,420
141
votes
3 answers
Why is my network interface named enp0s25 instead of eth0?
A lot of my scripts stopped working after installing Ubuntu 15.10 and I have trouble remembering this new name as I was used to ethx and wlanx for years. Is there a reason for this change? Do I have to get used to this or can I just rename it and go…
Mike
- 5,931
141
votes
9 answers
How do I check if Ubuntu is using my NVIDIA graphics card?
The reason I'm asking is that none of the games I've installed through software center that require 3D accelartion like TORCS for instance will run. When I try to run then, nothing happens. I have a Dell Inspiron N5110 with a nVidia GeForce GT…
Nic
- 1,411
141
votes
12 answers
Apache not able to restart
Trying to restart apache from terminal using the following command:
sudo service apache2 restart
When executing that command, I'm getting below error:
Job for apache2.service failed. See "systemctl status apache2.service" and "journalctl -xe" for…
Gautam Savaliya
- 2,361
141
votes
8 answers
How to install cmake 3.2 on Ubuntu
Default cmake version of 14.04 is 2.8. How can I install cmake 3.2 and replace the default one? Or how can I upgrade 2.8 to 3.2?
ycshao
- 1,541
141
votes
15 answers
How do I open the Application Launcher on KDE with just the meta ("Windows") key?
How do I open the application launcher ("start menu") of Kubuntu with my Windows key? Similar to how the Start menu in Windows is opened. I don't want to use Alt+F1.
sushi2141
- 1,413
141
votes
6 answers
How can I send a custom desktop notification?
I have a custom script and I want to send a desktop notification (the one that appears in the top right corner of the screen) with a custom message. How do I do that?
January
- 37,208
141
votes
3 answers
How do I keep track of failed SSH log-in attempts?
I'd like to see if somebody has been trying to log-in by brute-force into my Ubuntu 12.04 server over SSH. How can I see if such activities have been taking place?
Ivan
- 58,745
141
votes
3 answers
Set variable in .desktop file
Is there a way to set the enviroment variable in .desktop file?
I'm trying to run application (eclipse) with custom gtk style, so basically I want to get the following result by runing a .desktop file:
GTK2_RC_FILES=gtkrc.custom…
dotintegral
- 1,413
141
votes
23 answers
How can I specify the default save directory for gnome-screenshot?
Are there any sort of configuration options for specifying the default save location for gnome-screenshot, or is this hard-coded into the source code?
It used to be ~/Desktop, which seems to have changed to ~/Pictures (in 12.04).
The only possible…
trent
- 2,384
140
votes
15 answers
How do I set the default program?
How do I set the default program that I use?
I have tried to open System Info → Default Program → change my program, but it won't work,
Any idea? Or should I use Terminal?
I want to replace the default movie player with VLC media player, because…
Halim
- 1,411
140
votes
8 answers
What's the easiest way to unrar a file?
I just realized I can't unrar .rar files on my Ubuntu machine!
What's the easiest way to accomplish this fundamental task? If possible I'd love something like 7Zip that I can just right Click, and extract and have the program worry about how to do…
Only Bolivian Here
- 8,137
140
votes
10 answers
How do I disable automatic remote printer installation?
In Raring, everytime I connect to the network, Cups installs all the printers in the network automatically, some more than once.
Furthermore, I connect a USB printer to the laptop every now and then. Even though the printer is configured already,…
To Do
- 15,833
140
votes
4 answers
Network service discovery disabled: What does this mean for me?
Every time at boot I get a message “Network service discovery disabled. Your current network has a .local domain, which is not recommended and incompatible with the Avahi network service discovery. The service has been disabled.”
What does this…
Nickolai Leschov
- 8,400
140
votes
15 answers
How do I remap the Caps Lock and Ctrl keys?
I'd like to remap my keys such that Ctrl behaves as the Caps Lock key and vice-versa. Also, if possible I'd like the settings to be available only within the currently logged-in user. How can I achieve this?
I'm a vim user, unlike the other people…
user8838