Ubuntu is a Linux distribution with an emphasis on ease of use and installation. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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Every package “has no installation candidate”

While attempting to install openssh-server on Ubuntu 14.04 64-bit, I get the following error: Package openssh-server is not available but is referred to by another package. This may mean that the ...
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2answers
18k views

How can I completely reinstall mysql?

I had to reboot in the middle of a large data import. I only have one mysql database, which has now been corrupted. How can I completely remove mysql and reinstall it? I've tried apt-get purge ...
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1answer
3k views

Find a user's writable files and directories

How can I determine all files and folders that given user can write to? The user is nobody. Some script in bash or python, perhaps? I'm using Ubuntu 11.04
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5answers
10k views

Dual monitors and panels

I have a question with regard to a multiple monitor setup. I'm currently primarily a Windows user, but I've been running Ubuntu in dual boot to get a feel for it. The one thing I find lacking that ...
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4answers
6k views

How do I migrate configuration between computers with different hardware?

I want to migrate the configuration of an Ubuntu desktop to a new box with different hardware. What is the easiest way to do this? /etc/ contains machine and hardware specific settings so I can't just ...
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2answers
1k views

Is it possible to install a linux desktop environment from a live cd?

My question is about Linux in general but lets suppose my ubuntu isn't working property, booting in tty or whatever. I have no internet connection but I have ubuntu live cd. Is it possible to ...
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1answer
1k views

wubi pros and cons

Do you have experience using Wubi and if so, what are the major pros and cons ? I am of course particularly interested in potential problems.
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2answers
869 views

Are driver modules loaded and unloaded automatically?

On Ubuntu 14.04, I found that when I don't plug in my external wireless adapter, its module rt2800usb is still shown in lsmod. when does automatically loading a driver module happen? Is it when ...
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2answers
146 views

Removed apt-get from Ubuntu

Well my fingers did manage to do sudo apt-get remove libstdc++6 and write, yes. That removed alot of system files. Is there any way to bring it up working again? I have connected to terminal, and wget ...
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3answers
17k views

'iwlist' -> interface doesn't support scanning (Ubuntu LTS 10.04)

I am using Ubuntu 10.04 (LTS) on a Samsung N150+ netbook. I cannot scan wifi networks using iwlist and I would like to do so. Here is the output from some tests: ...
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1answer
8k views

Where did /usr/lib64 go and what is /usr/lib/x86_64-linux-gnu?

I have two Ubuntu-x86_64 systems. One is version 10.04, the other 12.04 and there is a difference in the structure of the lib directories. This doesn't surprise me, but I'm curious if anyone knows ...
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2answers
4k views

My .xsession and .xinitrc files are not executing

I have installed xmobar, xmonad on ubuntu 11.04. #!/bin/bash trayer --edge top --align right --SetDockType true --SetPartialStrut true \ --expand true --width 10 --transparent true --tint ...
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2answers
7k views

Add Apache to Ubuntu's startup

I'm currently learning the Linux environment, and decided to manually install the Apache server. For educational purposes, I've compiled it into: /server/apache The http.conf location is configured ...
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1answer
3k views

userns container fails to start, how to track down the reason?

When creating a userns (unprivileged) LXC container on Ubuntu 14.04 with the following command line: lxc-create -n test1 -t download -- -d $(lsb_release -si|tr 'A-Z' 'a-z') -r $(lsb_release -sc) -a ...
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2answers
364 views

Can I get infected in this case if I run a live cd?

I recently got rid of a nasty trojan on Windows and want to migrate to Linux(Ubuntu). I want to run a Live CD so that I can format an SD card to put my brand new firmware on my router and format the ...
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2answers
772 views

How to automatically generate .desktop file?

There's a .deb software that doesn't have a .desktop file, I created that file. I want to create another package for that software, when the user installs it, I want the .desktop file to be generated ...
7
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1answer
713 views

GPU computing without X?

I am attempting to run GPU computation software on Ubuntu Server 12.04 without X since this box is going to be a dedicated computation machine. However the last requirement "Without X" is proving to ...
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3answers
1k views

Fixing CTRL-* in vim under GNU screen

When running vim under GNU screen, I'm finding that combinations of CTRL with the arrow and Pg* keys don't work as expected. I'm using the Ubuntu 10.10 vim-gnome package. On a different machine, ...
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2answers
302 views

Run Ubuntu Security Updates every Saturday only

A clients wants to enable automatic security updates on their 12.04 box, but it has to be once per week, on saturday only. (Why I don't know) When I do dpkg-reconfigure -plow unattended-upgrades it's ...
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4answers
8k views

When does chmod fail?

Under what circumstances will chmod fail? I looked at the man page but it only specifies usage and doesn't go into details about what circumstances it won't work in. I'd assume chmod will work if: ...
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4answers
5k views

Ctrl + c will not kill process

I have looked for answers and so far have found nothing to answer my question. I am currently logging in to my Ubuntu server and upon running a process I can not run any of the interrupts on it. Here ...
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2answers
105 views

switching between shells, stops the music that is currently playing

While I was listening to music I changed the virtual console using Ctrl+Alt+F2, and suddenly the music was paused. Returning back to the console that runs the X server Ctrl+Alt+F7 or logging in to ...
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2answers
4k views

Fritz WLAN USB stick - Xlib/Xfree86 dev packages for installing Wine

I have installed Ubuntu 10.4 and want to install the driver for my Fritz WLAN USB stick according to http://wiki.ubuntuusers.de/fritz!wlan_usb_stick (German site... sorry). Now I am trying to install ...
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1answer
967 views

Full disk encryption with dm-crypt (without LUKS)

I am currently trying to achieve full disk encryption using dm-crypt in plain mode without LUKS header with a separate /boot on USB stick. My main goal is to achive plausible deniability on a ...
7
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1answer
407 views

Installing USR 5422 on Ubuntu 12.04

I am a newbie to Linux. I was trying to set up the USR5422 USB adapter. It worked fine for the first time, but since then it freezes the computer most of the time. What commands can I fire to see ...
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2answers
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autofs with sshfs not working anymore [closed]

I just upgraded from Ubuntu 12.04 to 12.10. Before that I backed up my autofs config which worked fine. I appended the line from my old /etc/auto.master to the new one: +dir:/etc/auto.master.d ...
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5answers
3k views

Unable to connect to a wifi network with an SSID containing diacritics

My current WiFi network (and i'm writing this with the help of Windows -.- ) has a diacritic in it's SSID: "ö". If changing the SSID is not an option, how to connect to such a network? This does not ...
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3answers
849 views

Is it possible to execute scripts in BIND based on lookup

Is it possible, to set up BIND as DNS server on my local network, and make execute scripts when it gets a lookup? I would like to execute a Python or Bash script, based on the incoming DNS lookup, ...
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2answers
921 views

No sound when attached to docking station

I have been using Linux and Ubuntu only since the last two months on my (2006) Sony Vaio VGN A617S laptop which is going pretty well on Ubuntu 10.10. When installing Ubuntu audio did get installed ...
7
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1answer
126 views

what's difference between src version 3.* and 3.*-generic

In my local Linux/Ubuntu, I have two directories for Linux src /usr/src/linux-3.16.0 /usr/src/linux-3.16.0-generic I found the code in 3.16.0 is much more than that in 3.16.0-generic. I am ...
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1answer
1k views

Smooth scrolling - where does it come from?

So, I've been dealing with Ubuntu and other Debian-based distros for a while and kinda like Crunchbang. But I've been also noticing that Ubuntu (as well as LMDE) comes with that fancy/nice/eyecandy ...
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1answer
5k views

Running F.lux (Flux) or Redshift with Multiple Monitors with Nvidia Optimus

I have tried installing F.lux and then Redshift, and configured them to run on multiple monitors with no success. I wonder if my setup, which includes Nvidia Optimus setup using Bumblebee could be the ...
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3answers
5k views

“Unable to resolve hostname” - how to cleanly change hostname without rebooting

At work, I work on a small website using Ubuntu servers hosted on Amazon EC2 instances. We have two webservers, and at any given time one of them is 'live' and one is 'testing', but when we've got our ...
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1answer
402 views

Low battery freezes laptop [closed]

I have a laptop Lenovo G575. MS Windows works without any problems on it, but with Linux, it freezes during login or up to 10 minutes after power on. I have tried Ubuntu, Fedora 15 and 16, Fedora 16 ...
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5answers
2k views

How do you free up resources in Ubuntu?

What steps do you take to make a vanilla Ubuntu system run faster and use less memory? I'm using Ubuntu as the OS for my general purpose PC, but it's on slightly older hardware and I want to get as ...
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6answers
47k views

How to transfer files from Windows to Ubuntu on Virtualbox?

How should I transfer files from Windows to Ubuntu installed on Virtualbox? When I plugged in a USB, it only pops up in Windows. How can I see it in Ubuntu?
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3answers
715 views

Effect of compiling from source on already installed applications

I use Ubuntu 12.04. Say I have installed package x from the repository (with all its dependencies) at version 1.7 but I need some functionality that is only available in version 1.8, so I download the ...
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5answers
19k views

“mount: / is busy” when trying to mount as read-only so that I can run zerofree

I am trying to run zerofree on Ubuntu 11.04 so that I can compact the VirtualBox vdi image using: VBoxManage modifyhd Ubuntu.vdi --compact In order to run zerofree the disk image has be mounted as ...
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3answers
1k views

Command line join of password protected wireless networks in Ubuntu, Arch Linux, or other distros?

Is there a way to join a password protected wireless network via the command line in installations of Ubuntu or Arch Linux with no desktop environment or any GUI installed? Also, could this be done ...
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4answers
1k views

What makes Ubuntu not totally Free Software?

I heard that Ubuntu is not completely free (as in Freedom). What are the specific parts of Ubuntu that are not Free?
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3answers
2k views

Change default search name

My Ubuntu12 server VM is receiving its IP address from an DHCP server (actually my WLAN router called Fritz Box). Hence all domain names are resolved to machinename.fritz.box. The reason seems to be ...
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5answers
13k views

How can I upgrade pip on Ubuntu 10.04?

On Ubuntu 10.04 I've used apt-get install pip to install pip after which I installed django. Then I tried to uninstall django with pip via pip uninstall django which gives me: pip: error: No command ...
6
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1answer
9k views

Hide curl output [duplicate]

I'm making a curl request where it displays an html output in the console like this <b>Warning</b>: Cannot modify header information - headers already sent by (output started at ...
6
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5answers
10k views

How do I update bash on EOL Ubuntu versions?

I.e. can I find a close enough package in the next nearest distro? Or is it complicated, and compiling from source is better? Or can I grab it from debian? (This question is about at least Ubuntu ...
6
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3answers
510 views

How does bash know how it is being invoked?

I've installed jailkit on Ubuntu 12.04 and I have set up a user's shell to /bin/bash - but when it is invoked it runs /etc/bash.bashrc instead of /etc/profile If you haven't used jailkit before ...
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2answers
20k views

Where to find the error messages of Postfix

I cannot sent mail by using Postfix (SMTP) on Ubuntu Server 11.04. So, there must be some errors, But where to see the error message?
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3answers
2k views

How does one open a new window from the shell with a specific size and position?

For example, say I wanted to start gnome-terminal with it's northwest corner at 0,0, and make the window 736x434 pixels (apparently the default, which allows for an an 80-character by 24-character ...
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1answer
7k views

apt-get doesn't stop on Ctrl-c, what to do?

Occasionally I have connection problem with apt-get (typically because I use it behind a proxy and try to install/upgrade flash). I have been trying sending Ctrlc but it would not stop. I thought it ...
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4answers
9k views

What is the default permission of folder /var?

I am a complete beginner in Linux. I just installed Ubuntu 12.04 in a pendrive, then installed MySQL and Apache PHP and then I tried to install Moodle (a distance learning platform I use at work). The ...
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2answers
13k views

When a process will go to 'D' state?

I'm using "Linux hostname 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 18:40:08 UTC 2009 i686 GNU/Linux" All the client machines will use Thin-client ,I will use my laptop for working and I will ...