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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How do I add custom GPG key to Ubuntu/Debian installer?

I'm trying to setup custom Ubuntu install CD using instructions on http://beezari.livejournal.com/191717.html I've added my GPG key to ubuntu-keyring and signed Release file with it (resulting in ...
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2answers
8k views

Invalid signatures when running apt-get update

I'm new to linux and am trying to run an update, I get a lot of "Hit"'s and "Ign"'s but in the end I get these errors, does anybody know what they mean and how I can fix them? W: GPG error: ...
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0answers
756 views

Problem while install ubuntu 12.04.3-server

I try to install Ubuntu 12.04.3-server-i386 in my system. My system configuration is 256MB RAM, 80GB hard disk, Pentium 4 (2.40Gz). I have a DVD drive, I downloaded 12.04.3-server-i386.iso and burnt ...
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3answers
97 views

How to get data shown out of workspace or directly from application?

Because of some reason I had to use another web browser than my main which I use daily and I chose a small browser which I installed long time ago. This brower is called Dooble, version 0.07 ...
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2answers
1k views

shutdown ubuntu server after 2 days at midnight

without using a cronjob how would I have a ubuntu server shutdown after 2 days (2880 minutes) at midnight? The essence of what I want to do is this: bash shutdown -r +2880 00:00 which would tell ...
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3answers
16k views

How can I get Apache working (complains about logfiles) on Ubuntu after a distribution upgrade?

I upgraded from Raring to Saucy, and it says it can't open listening sockets: root@ip-10-250-42-219:/etc/apache2/sites-enabled# apache2ctl restart [Tue Oct 22 13:34:05.187996 2013] [core:warn] [pid ...
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3answers
1k views

Ubunutu software-centre is not working, showing black screen

I am trying to open ubuntu software-center but it get paused and after that shows complete black and nothing is happening. Same thing has happened when I try to run from command line. This is the ...
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2answers
831 views

Ubuntu with Gnome and Openbox

I've in my laptop Ubuntu 12.04.03 which comes by default with Unity. I like Unity, and Gnome. It has a nice look, some nice apps, things frequently works nice. However I would prefer to use Openbox. ...
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0answers
3k views

badblocks and “end_request: I/O error” in output

I have 500GB disk in my toshiba laptop, I tried to do backup of files in this HDD but it failed few times (ubuntu just closed copying operation or unmounted disk during copying files). So I boot my ...
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1answer
227 views

Why do I need to add a GPG-key with apt-key before adding URL to sources.list and download-installing an application with apt-get?

I went on to download an application today. It had it's instructions listed, step by step, number one being: adding a GPG-key with apt-key. It was followed by adding the application to apt/sources and ...
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3answers
3k views

apache not starting in vagrant vm

I used Puphpet.com to create a Vagrant VM to be used for web development. The problem I am having is that the VM cannot start apache on boot. $ sudo /etc/init.d/apache2 start * Starting web server ...
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1answer
153 views

Entered wrong installation path in Ubuntu

I was trying to install Huwaie 3G modem on Ubuntu. The install.txt said: Run ./install in TERMINAL to install MobilePartner eg: # bash //install If you had installed this software in your ...
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1answer
1k views

Passing in parameters to Upstart

I can do mongod -f /etc/mongodb.conf How do I achieve the same effect when starting mongodb as a service? ie sudo service start mongodb By default this does not read from the config file. I ...
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3answers
1k views

Removing Ubuntu 12.04 LTS from a dual boot setup and recovering the Windows boot manager

I have Ubuntu 12.04 LTS and Windows 7 Home Premium on my laptop. My desire is to uninstall Ubuntu without spoiling MBR and Windows 7. I would like to emphasize that Ubuntu was installed later so I ...
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1answer
308 views

For downloading, youtube file format changes depending on OS?

Oh! its sad to see what I saw. I am downloading a file from youtube (the video is of 1 hr) using command line from Ubuntu13.04 as below: ravbholua@ravbholua-Aspire-5315:~$ youtube-dl ...
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1answer
646 views

Ubuntu: /proc/pid/comm file missing

On my development box, under /proc/[pid]/ there is a file called comm containing the name of the executable for that process. I use this to validate the process to which I am sending a signal. On our ...
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3answers
6k views

Need small distro without a desktop or windows manager, just to run a single graphical app [duplicate]

I am looking for some help on this from a linux expert. I am very novice when it comes to linux so I am hoping someone can help out. I need a small distro, that is stable. I don't need a full X ...
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2answers
1k views

Upgrading software in linux

I have a program called zlib I need to upgrade. As I've never downloaded it before I suspect it comes with Ubuntu. Normally I'd just download and compile it, but a different tool (vcftools) is going ...
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1answer
185 views

Ubuntu 13.04 disconnecting issue

Weird situation here. I can download anything I want with no problems whatsoever. As soon as I try to download a torrent via a magnet link, I disconnect from the wireless router after about three ...
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0answers
460 views

Ubuntu warning. W: Duplicate sources.list entry

After installing Oracle VirtualBox, when I do sudo apt-get update, I get the following warning W: Duplicate sources.list entry http://download.virtualbox.org/virtualbox/debian/ raring/contrib i386 ...
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1answer
501 views

Ubuntu Server - OS on single HDD, file server on software RAID 1

I run a Windows Server 2008 machine. It is used as a file server (File Services feature), in addition to local shares I use CrushFTP for SFTP and HTTP access to my files. I would like to convert to ...
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3answers
83 views

Can I install other distro and use /home from previous one?

I want to install CrunchBang, and I have been using Ubuntu 12.10. Should I format /home, or do I need to only format / and install #! there?
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1answer
5k views

Linux - File change time versus modification time

I'm using Ubuntu 12.04, though I'd imagine this question spans all Linux variants. In the manpage for the stat command, there are two (four) formatting options that appear to mean the same thing: ...
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1answer
304 views

Unable to update my system Ubuntu13.04: Getting message - requires installation of untrusted packages

I had been trying to update my Ubuntu13.04 via 'software updater'. The updater messages that the following needs to be installed. Press continue to install When I press continue , a window appears as ...
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1answer
308 views

Nautilus Renaming Bug when pressing 'n' key in Ubuntu

I have what i can consider a Big Bug on Nautilus under Ubuntu Linux. When I am in the process of renaming a file or a folder, if I press n, nautilus opens a new tab. The effect is: I cannot include ...
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2answers
549 views

How do I execute a command on login for a system user with no home folder and no personal .bashrc file?

I set these users' home folders through the /etc/passwd file, but when they log in I would like them to activate a python virtualenv. If they had a personal .bashrc file, I'd just include the activate ...
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1answer
94 views

Why does a manual mount set different file ownership?

I've been using the terminal for almost everything: in fact, I often don't even log in through the interface, I use the tty1 and go to the web with text-browsers. So, the external drive doesn't ...
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2answers
35k views

How to check whether certain port is opened or block on any other servers from a dev box?

I am trying to connect to one of our staging Cassandra servers on port 9042 and 9160 here in our company from a dev box.. Through the code, I am not able to connect to it... The program gets hanged at ...
2
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1answer
624 views

Is it possible to import vmail folder from old iRedMail to new iRedMail installation?

Basically, what I did: Copied vmail folder to my local machine. Reinstalled my VPS. Installed iRedMail again. Created same users on the same domain. Question is - can I somehow copy over my old ...
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1answer
2k views

Overwritten MBR: Is partial/complete recovery possible?

I have a Sony VIAO laptop setup as dual boot (Ubuntu 12.10/Windows 7). Since I wanted to try Archlinux, I installed VirtualBox in Ubuntu. To create a bootable USB stick (from the ISO image on my hard ...
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2answers
2k views

Simulate x-screen?

I'm working in a koding terminal running ubuntu 13.04, and I'm trying to run an application that requires an x-screen (even to run in terminal mode). I am unable to connect with x11 forwarding, and ...
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343 views

Is it possible to import vmail folder from old iRedMail to new iRedMail installation?

Basically, what I did: Copied vmail folder to my local machine. Reinstalled my VPS. Installed iRedMail again. Created same users on the same domain. Question is - can I somehow copy over my old ...
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0answers
558 views

How to install Ubuntu in a netbook, but keeping the original win7 installation in storage

I have a Samsung N210 netbook. It has windows 7, starter edition. I´ve tried the latest Ubuntu version using a pendrive and loved it so far. I would like to install it in my netbook, but I would ...
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0answers
716 views

libcurl4-gnutls-dev : Depends: libldap2-dev but it is not going to be installed

I am trying to install curl in my ubuntu server as I was getting this error whenever I am compiling my C++ code - fatal error: curl.h: No such file or directory Below is the error: ...
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1answer
5k views

Can't connect to steam

I've just installed Steam on my computer, created a Steam account and tried clicking on the steam icon to load it. It gave me the following error and then shuts down: If I type steam in the ...
2
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1answer
655 views

Can't sudo after lock password, can I recover from that?

After setup ubuntu with default settings, It allows user to login with password, so I use passwd -l [username] to forbid password login both in ssh and console. But when I use sudo to execute ...
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2answers
8k views

How to download latest version of cmake?

I have installed cmake like this - sudo apt-get install cmake But whenever I try to compile my c++ code.. I always get the below error - CMake Error at CMakeLists.txt:2 (cmake_minimum_required): ...
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1answer
521 views

/usr/bin/cmake: is a directory. Not able to grab the version of cmake?

I just have installed CMAKE in my ubuntu machine.. So when I do whereis cmake, it gives me the actual path username@phx7b02c-ee1b:~/CMAKE/cmake-2.8.11$ whereis cmake cmake: /usr/bin/cmake But ...
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5answers
26k views

org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed] while running eclipse on ubuntu

I was trying to open eclipse in my ubuntu VM with the below commmand.. And as soon as I do that, I always get the below exception - ubuntu@username-dyn-vm1-48493:~$ eclipse Eclipse: An error has ...
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2answers
6k views

why can't linux see my run.sh command?

I have a run.sh in a directory in ubuntu linux 12.04 LTS. I've been changing the Path variable so that it can "see" binaries elsewhere in the directory structure. But I am still getting a command not ...
2
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1answer
3k views

How to install persistent ubuntu 12.04 on USB drive?

I spent an entire day trying to figure out why my USB ubuntu installation was not being persistent. Yes, I did check the "persistence" option and assigned a file size for it during installation. I've ...
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1answer
1k views

service vs. initctl in Ubuntu

Why are some deamons run out of service and some out of initctl in Ubuntu? Do both tools do the same thing and it is just a matter of personal preference of the user what they will use? E.g. sudo ...
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2answers
894 views

How do I run a script when I switch between keyboard layouts

I use more than one keyboard layout, and I would like to find a way to run a script when I switch between them. Is this possible? So far, I can assign a shortcut for a script like this: #!/bin/bash ...
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1answer
259 views

Accessing Pendrive in Ubuntu using Wine

We use ubuntu in our college and they have blocked pendrive access. When we insert pendrive it displays a dialog that says "There is no application to handle this file" (or something like that). So, ...
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1answer
13k views

How to install squashfs-tools on Ubuntu?

I tried running `unsquashfs and got: $ unsquashfs filesystem.squashfs The program 'unsquashfs' is currently not installed, You can install it by typing: So I went to install it: $ sudo apt-get ...
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0answers
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UBUNTU + extract filesystem.squashfs for editing [duplicate]

please advice how to install the squashfs-tools on UBUNTU linux ? I try this unsquashfs filesystem.squashfs The program 'unsquashfs' is currently not installed, You can install it by typing: ...
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1answer
76 views

Is there a way to get apt-get to install from different distributions in one single command?

I'm building a package from source in Debian Wheezy, which has a few build-deps that cannot be satisfied by stable. Therefore, I use a few packages from unstable, testing and wheezy-backports. The ...
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1answer
200 views

Setting up server to share music with tv

Can someone please point me in the right direction? Hopefully first by letting me know if this is possible... I recently purchased a home theater system which you plug via hdmi into the tv. It has ...
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1answer
87 views

Transfer Ubuntu server 10.04 to another 13.04 [closed]

I am totally new to Linux administration and now I have big problem. I have old server with some sites, databases, programs etc that is Ubuntu 10.04. Because of too much users I rented new better and ...
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2answers
173 views

Ubuntu 12.04: updating package message

When ever I updated packages, (they update) I receive the following message about TeXLive: dpkg: warning: parsing file '/var/lib/dpkg/status' near line 2888 package 'texlive-local': missing ...