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1500 questions
143
votes
8 answers

How do I install Skype?

I want to install Skype, but I can't locate it in Software Center or by using Synaptic Package Manager. Can anyone help me?
Sumon
143
votes
13 answers

Bluetooth headset with poor sound quality on Ubuntu

I've bought a Philips SHB4000 headset (phone+mic) wireless (bluetooth) and It has a good quality when I pair it with my phone or PC Windows but when I pair it with the same PC on Ubuntu (14.10 64 bits) the sound quality goes down. I've been googling…
Cleber Marques
  • 4,249
143
votes
16 answers

Is there a way to "restart" the touchpad driver?

I use Ubuntu 14.04 on a laptop, usually with an external usb mouse and keyboard and screen connected. Sometimes, however, I unplug all of them and move the laptop and keep using it with the builtin keyboard and screen and touchpad. At random times…
matteo
  • 2,559
143
votes
4 answers

What does 'without password' mean in sshd_config file?

I just installed Ubuntu 14.04 on my server and I was setting up all my config files when I came across this in my sshd_config file: # Authentication: LoginGraceTime 120 PermitRootLogin without-password StrictModes yes This made me very worried. I…
John
  • 1,806
143
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
143
votes
5 answers

How do I run a script at start up?

I have a script in a folder: /path/to/my/script.sh I need this script to run every time the system starts (even if no one logs in to the system). What do I need to do in order to make this happen?
Rusty
  • 1,581
143
votes
7 answers

Permission denied, are you root?

I get this error whenever I try to install programs using the terminal: home@ubuntu:~$ apt-get install myunity E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory…
Raghav Mittal
  • 1,616
143
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
  • 2,404
143
votes
8 answers

"Package 'docker-ce' has no installation candidate" in 18.04

I'm following the official Docker installation guide for docker-ce on Ubuntu. When I get to sudo apt install docker-ce I get E: Package 'docker-ce' has no installation candidate : $ sudo apt-get update Hit:1 http://gb.archive.ubuntu.com/ubuntu…
Robin Winslow
  • 2,646
142
votes
1 answer

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY

When I run apt-get update , I get this error message: Err:18 http://dl.google.com/linux/chrome/deb stable Release.gpg The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E I understand what…
Billal BEGUERADJ
  • 6,361
142
votes
9 answers

How do I change my default browser?

Is there an option to change my default browser for all my applications?
Ederico
  • 6,447
142
votes
5 answers

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 care? This is designed as a canonical answer for…
nanofarad
  • 20,916
142
votes
1 answer

Shutdown after a certain time

I am done using my laptop but I am using the hotspot in my smart phone. So I want my laptop to be awake for next one hour. How can I Shutdown the laptop after one hour of time?
sigdelsanjog
  • 7,280
142
votes
3 answers

What does the StartupWMClass field of a .desktop file represent?

I am working on this pre-existent .desktop file and I have a doubt: The file content is: [Desktop Entry] #Icon=connect-data-space Icon=XCloud Categories=Utility; Type=Application #Exec=/usr/share/ConnectDataSpace/appl/launcher.sh…
AndreaNobili
  • 4,869
142
votes
4 answers

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?
Cristian Sierra Cardenas
  • 1,523
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