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Questions tagged [ubuntu]

Free, open-source operating system based on Debian GNU/Linux. Ubuntu questions are on topic here, but if you prefer an Ubuntu-only audience there is Ask Ubuntu (https://askubuntu.com/).

Ubuntu is a computer operating system originally based on the Debian GNU/Linux distribution and distributed as free and open source software.

The related Stack Exchange site, Ask Ubuntu, exists if you would prefer an Ubuntu-only audience, as opposed to the multi-environment/operating system one found here on Super User.

Support

At any given time, two or three Long Term Support (LTS) versions are supported as well as the most recent prior non-LTS version. If the latest stable release is non-LTS, then two non-LTS releases are supported: the current and the prior one. If the latest stable release is an LTS, then only the prior non-LTS release and the LTS releases are supported.

Support means that security and bug fix updates are continuing to be released to the update repositories. When support is dropped for an old release, responsibility for fixing any bugs or security issues is left up to the user.

The latest table of currently supported and unsupported releases can be found on the Releases page of the Ubuntu Wiki.

If your operating system is Ubuntu, you can run the following command to check the support status of the system's installed packages:

ubuntu-support-status

These are the Ubuntu version-specific tags on Super User:

  • (Zesty Zapus) end of support: January 2018
  • (Xenial Xerus) LTS end of support: April 2021
  • (Wily Werewolf) end of support: July 28, 2016
  • (Vivid Vervet) end of support: February 4, 2016
  • (Trusty Tahr) LTS end of support: April 2019
  • (Saucy Salamander) end of support: July 17, 2014
  • (Raring Ringtail) end of support: January 27, 2014
  • (Quantal Quetzal) end of support: May 16, 2014
  • (Precise Pangolin) LTS end of support: April 28, 2017
  • (Oneiric Ocelot) end of support: May 9, 2013
  • (Natty Narwhal) end of support: October 28, 2012
  • (Maverick Meerkat) end of support: April 10, 2012
  • (Lucid Lynx) LTS end of support: April 30, 2015
  • (Karmic Koala) end of support: April 30, 2011
  • (Jaunty Jackalope) end of support: October 23, 2010
  • (Intrepid Ibex) end of support: April 30, 2010
  • (Hardy Heron) LTS end of support: May 9, 2013

Derivatives

The officially recognized derivatives of Ubuntu can be found on the Flavours section of About Ubuntu.

These are the Ubuntu derivative tags on Super User:

21927 questions
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Where can I get the repositories for old Ubuntu versions?

Where can I get the old repositories for Ubuntu versions? In my case, it's 9.04 Jaunty? I found all the official repositories and their mirrors have been removed. I am wondering where I can get the repository list for this version?
user705414
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55
votes
7 answers

How to search terminal output

Suppose I have a Terminal open that contains thousands of lines of output from my previous commands over the past few hours/days. How do I search that recorded output for a string? I'm especially interested in a solution that doesn't require the…
Jo Jo
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44
votes
3 answers

How do I reload sysctl from sysctl.d directory?

I am making changes to a file in the /etc/sysctl.d directory (Ubuntu 12.04). I know that sysctl -p reloads from /etc/sysctl.conf but it doesn't seem to work for anything under the /etc/sysctl.d/ directory. A reboot works, but I'd like to do it…
ShinySpiderdude
  • 591
43
votes
6 answers

What is the best way to turn off the Ubuntu beep permanently?

I've seen different ways to turn off the annoying Ubuntu beep but what is the best way to turn it off permanently through software?
Craig Angus
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37
votes
12 answers

Enable system beep in Ubuntu

I have tried to get the system beep working, but with no success. I used echo -e '\a' and the beep application. I have tried entering modprobe pcspkr at the command line, and made sure pcspkr is not listed on the modprobe blacklist. I also…
Melissa W
34
votes
3 answers

What is the purpose of /etc/default?

For the first time I was asked by a daemon I installed to set a flag in there. What's it for? Is it a newish concept?
John Bachir
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27
votes
6 answers

Ubuntu - permanently remove ~/Videos and ~/Public

I've deleted the folders, but every time I sign back in they're recreated. I've edited ~/.config/user-dirs.dirs and removed the offending lines, but they're replaced when I log back in! The file say's it's auto-generated by…
nona
  • 271
25
votes
4 answers

How to do *dpkg-reconfigure dash* as bash automatically

I want to build a docker image from ubuntu image. It is required to change the default sh from dash to bash manually. (Because it require to install many rpm packages which contains bash scripts) dpkg-reconfigure dash Is there any method to let…
Daniel YC Lin
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23
votes
3 answers

How to connect to memcached from another machine

I'm trying to use memcached from a different machine (which has access to my server), but I can't figure out how. on the memcached machine I can test the connection by running telnet 127.0.0.1 port And it works, but on the other machine it just…
Oscar Del Ben
  • 341
18
votes
6 answers

Ubuntu 9.04: Why is IPP(TCP 631) open and how do I disable it?

I'm configuring a new install of Ubuntu 9.04 laptop and when I do a port scan, I find that TCP 631 (IPP) is open. What do I do to disable this listening port?
Bob
  • 345
18
votes
2 answers

Difference between sudo group and sudoers file?

I am creating a user in Ubuntu 14.04 using command adduser. I want to give it sudo access. For doing this, I am consfused in between two ways. First way is : If I add that user to sudo group using command usermod -aG sudo. Second way is : If I…
sorbhs
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15
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2 answers

Ubuntu does not boot due to disk space full

I'm using Ubuntu 13.10. When I boot Ubuntu it does not start and just shows a blank screen. I tried cntrl+alt+f1 and using df -h I saw that my /dev/sda7 is completely full. I can't even remove old kernels due to low space. I cannot start Ubuntu,…
Prakhar
  • 153
15
votes
3 answers

Installing ubuntu do I really need a boot partition?

I will be installing Ubuntu 9.10. However, when I go to the advanced options for making the partitions. I have decided that I will create a swap file x2 size of RAM / (root) partition. I have read some documents that say you should also create a…
ant2009
  • 3,115
15
votes
2 answers

easy-rsa v3: execute build-ca and gen-req silently?

With the newer v3 version of easy-rsa I could not find a way to silently feed data to the command line: $ ./easyrsa build-ca nopass Note: using Easy-RSA configuration from: ./vars Generating a 2048 bit RSA private…
Sebas
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13
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3 answers

Ubuntu - How to run a terminal command on boot?

I want to execute a command when Ubuntu boots. The commands in particular are: sudo shutdown +m sudo shutdown +1 I want the computer to shut down as soon as it starts for testing purposes. I plan on switching the computer back on with a bit of…
twigg
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