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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1answer
189 views

Ubuntu 13.04 on Acer x64 PC, only boots after starting recovery

I have this strange problem with my Acer E1 421. First of all it's important to say that I've upgraded this laptop's memory to 8gb RAM instead of 2. I decided to remove Windows 7 x64, and install ...
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1answer
2k views

enable/disable NTP service on Ubuntu 12.04

Our application runs on Ubuntu 12.04 precise. On this server, we have both ntpdate and ntp. How to enable and disable ntp service on-demand? I tried sudo update-rc.d -f ntp remove/default and ...
3
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1answer
9k views

How to properly automatically/manually rotate log files for production Rails App

I am taking over administration for a server which has a custom made 3rd party Rails app. The app developer informed me that the ruby log files are getting large and pointed me to the following link: -...
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1answer
787 views

Cron automated bash script to run run 1 bash script then another, plus integrity check

So I have a custom in-house app developed by a 3rd party. When the app is running, I can verify it is running with the "screen -ls" command. As long as screens are running for rails and freeswitch ...
3
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1answer
156 views

detect process that executes portscans

I have to administer an ubuntu 12.04 server, where there seem to go portscans to the whole subnet. How can I find out the process that does the scans? pstree init─┬─acpid ├─apache2───14*[apache2]...
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1answer
125 views

How to know I am using vi or emacs input?

Crash shell allows to specify the command line editing mode to vi or emacs. What will be the difference in these input methods? I am not asking about the internal features.
4
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2answers
302 views

Some info pages missing

On my computer (ubuntu 12.04), some info pages are missing, like for tar. When I enter info tar, it opens the tar manpage instead of the tar info manual. So how can I install these pages on my system?...
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1answer
5k views

how to enable command history of shell

I am using ubuntu 13.04, in this the command history of the shell is getting erased on close. Can someone tell me how to prevent this from happening?
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0answers
99 views

Wireless driver crashes when I'm too close to Access Point

This is the opposite of your usual WiFi problem: my signal strength is too high, now too low. Ever since I upgraded my access point to an Asus RT-AC66U, the WiFi driver for my Lenovo Y480 crashes ...
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1answer
644 views

slow Matlab on Ubuntu LTS and ZERO Swap

I was using Matlab2012 under Win7 and my algorithm was consuming a huge amount of memory though it was fast (80 seconds for one iteration). Now I am using Matlab2013 under Ubuntu 12.04 LTS and though ...
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0answers
158 views

System cannot load Ubuntu based OS's

I built a computer a few months ago, specs listed here. I then installed Linux Mint 13, but then when I wanted to install Ubuntu, the install would start, and I would select "Install". But when it ...
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3answers
19k views

Restrict FTP user to a directory

Sorry if this is an obvious question, but I don't have a lot of knowledge about this sort of thing, and I've googled for hours, nothing worked. So on a Ubuntu 11.04 server, I want to restrict a user ...
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1answer
3k views

Creating UFW rule to allow application to use dynamic ports

I am currently trying to get a Google Chromecast device to work through my Ubuntu 13.04 based computer. Currently, the Google Chrome extension shows "no devices found" as long as my UFW firewall is ...
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2answers
1k views

If some program is not working in Ubuntu, how to uninstall and reinstall

I'd be specially interested in a solution that covers the dependencies of this program, and not only the program as such. I have several programs that don't work after I updated to Ubuntu 13.04 from ...
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0answers
346 views

Memory test while booting . Unable to boot Ubuntu 12 04 LTS

I'm running Ubuntu 12.04 LTS. All of a sudden, my I'm unable to load the OS. A memory test is happening while I'm trying to boot the system.
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2answers
6k views

Automount not disabling in Ubuntu 12.04 or 13.04

I'm trying to disable the automounting of any usb device. I have this working in Ubuntu 10.04, but I'm trying to do the same in either 12.04 or (ideally) 13.04 but not having any luck. Everywhere I ...
2
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2answers
115 views

Why gnustep-config outputs nothing for any parameter?

Regardless of what I run: gnustep-config --debug-flags gnustep-config --objc-flags gnustep-config --base-libs It outputs nothing. How would I debug this? PS: the OS details: Ubuntu 12.04.2 LTS, ...
2
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1answer
3k views

Environment variable for ip address

I see somewhere people use: IF_ADDRESS="$(echo "$IP4_ADDRESS_0" | cut -d'/' -f1)" to get the IP address in a network configuration script. In my system, I create a script under the directory /etc/...
4
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1answer
3k views

Can't ssh to beaglebone?

After I did: route add default gw 192.168.7.1 I also changed /etc/resolv.conf: nameserver 192.168.7.1 in order to share internet between Ubuntu in VMware. I've got internet working but after a ...
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2answers
4k views

Uninstall Aptana from Ubuntu

Can someone please tell me how to uninstall Aptana from ubuntu 12.04 LTS? I followed these instructions, in summary: Install the prerequisites with apt-get install. Download Aptana Studio Extract ...
4
votes
1answer
400 views

Ubuntu unattended install : echo keypress to dialog

Ubuntu 12.04 LTS Server 64 My unattended-mode bootstrap.sh script contains: apt-get upgrade -y I know that during execution a primitive UI for GRUB installation will be shown which requires ...
0
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3answers
571 views

How can I first download KDE files and then install them offline on Ubuntu?

How can I first download KDE files and then install them offline on Ubuntu?
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1answer
764 views

XUbuntu: Window manager stopped to work

I installed XUbuntu on my netbook and it worked like a charm for about a week. Then, today, the Software center application crashed and since then the window manager stopped to work. Thera are ...
7
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1answer
14k views

where is /var/log/messages

I have several sources saying that /var/log/messages has system log message but I don't have that file (Ubuntu 11, Debian). Is the messages file somewhere else now? I tried using locate to look for ...
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2answers
99 views

uXlib.h Which package have this lib file?

I am getting an error uXlib.h not found while compiling a program, written in c++ I think the lib file is related UIM/X from the following link motif.ics.com/sites/default/files/ReferenceManual.pdf‎
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0answers
128 views

No microphone input - VIZIO CT15-A5 and 12.04 LTS (64)

I have the VIZIO CT15-A5 and 12.04 LTS (64) is running smoothly .. Only one issue.. I cannot record sound or use Skype due to lack of mic input. I have tried turning up the sound using the alsa ...
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2answers
4k views

How do I make my laptop sleep when it reaches some low battery threshold?

I'm using Ubuntu, but I have i3 as my window manager. Under i3, when my battery reaches 0%, the computer will just abruptly shut down, no warning or anything. Is there a simple script or ...
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2answers
600 views

Pg Dn key returns tilde (~)

When I hit Page Down in terminal (I'm using Ubuntu 12.04), strangely I get the ~ (tilde) character. This is annoying especially when I searched my command line history and decided to go to the bottom ...
2
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0answers
28 views

How to create an upstart process in Ubuntu? [duplicate]

I am trying to create a process to be automatically started and maintained by Ubuntu's upstart (Ubuntu 12.04). I have been looking at this page as well as on this page and I am aware of the upstart ...
18
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2answers
58k views

How to start a service automatically, when Ubuntu starts?

I am using Ubuntu 12.04 and want to have a service starting, when the system is booted normally. As 'service' I understand some code, for example cd my_directory; my_command -host 0.0.0.0 -port ...
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3answers
12k views

Darcula dark theme for Eclipse

I wonder if there is a way to use Android Studio Darcula theme in Eclipse? I am trying to make Eclipse look a little bit like AS. So far I have made changes to the editor window and I have no idea how ...
0
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1answer
471 views

Processing multiple mails in a Postfix mailbox by making cronjob run per second-is that considered good practice?

I need to process at least three thousand incoming emails an hour that are received in a postfix mailbox. Processing involves extracting email attachments and sending the content of an email ...
3
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2answers
310 views

Silencing all stdout during bootup

I am looking for a completely silent bootup of my Ubuntu Server 13.04 installation (dumped to file rather than stdout). What I want is the screen to be blacked out (eventually replaced with a logo) ...
2
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1answer
1k views

How does the screen backlight work?

Everything about the backlight settings and controls work for me except: Backlight resets to max. on every reboot/boot. The backlight minimum goes on to complete black screen, instead of the minimum ...
0
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2answers
632 views

apt-get failed to fetch package

I want to install curl on my ubuntu: sudo apt-get install curl It gave the following error: Err http://it.archive.ubuntu.com/ubuntu/ maverick/main curl i386 7.21.0-1ubuntu1 404 Not Found [IP: ...
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1answer
2k views

Finding log file of ntp daemon in Ubuntu 10.04 LTS

My Ubuntu is set to run ntp before dovecot at startup. (See my earlier question: The rc0.d,rc1.d,... directories in /etc in Ubuntu 10.04 LTS) However, I suspect that dovecot may have finished ...
4
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1answer
130 views

My Linux certifiction book talks about rcatd but I don't have it

My Linux certification book talks about using rcatd commands. When I try rcatd status I get command not recognized When I try rcatd start I get command not recognized sudo apt-get install rcatd gave ...
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2answers
7k views

multicast is enabled on ubuntu?

I have one of my Ubuntu machine- rkost@rj-vm9-14105:~/infinispan/infinispan-server-6.0.0.Alpha1/bin$ uname -a Linux rj-vm9-14105 2.6.35-22-server #33-Ubuntu SMP Sun Sep 19 20:48:58 UTC 2010 x86_64 ...
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0answers
314 views

Zorin OS 7 Kernel Panic and boot failure

So I decided to try out Zorin OS 7 x64. Everything was fine during the installation. After a few minutes of browsing the internet with Chrome I got this error: CtrlAltDel didn't work, so I hit '...
1
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1answer
394 views

Ubuntu LTS : best practice for installing gems

Ubuntu 12.04 LTS Server I'm relatively new to Unix/Ubuntu. I need to install the ruby gem libopenssl-ruby. I know that Ubuntu LTS versions maintain lists of authorized package versions. apt-get ...
5
votes
2answers
1k views

Setting environment variables for system users

I have a couple of system users that have no password set, login disabled and no home directories. They are used solely to run FastCGI processes for a couple of websites. I want to avoid hard coding ...
0
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1answer
260 views

How to get my files from my encrypted home folder on Ubuntu 12.04?

Last night there was a power outage and now my computer will not boot up. After pushing the power button and seeing the BIOS I only see a black screen with a white cursor at the top left of the screen....
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1answer
843 views

Xinput device disable doesn't work for all mouses

There are 2 mouses connected to one computer and I want to disable them. I tried to do it using xinput. It works for one mouse (OM), but it doesn't for second (SIGMACHIP Usb Mouse). Second mouse is ...
0
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0answers
244 views

Chromium omnibar not showing search suggestions?

I am using chromium browser on my ubuntu 12.04 and it doesn't show any search suggestions when I type search terms in omnibar. I checked settings, everything fine there with checkbox ticked for ...
3
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1answer
6k views

Unable to ssh into Ubuntu 12.04 LTS [could not resolve hostname (hostname): Name or service not known

I'm just starting with a clean install of Ubuntu Server 12.04. I've run: $ sudo apt-get update $ sudo apt-get upgrade I've added the following to /etc/hosts: 127.0.0.1 (hostname) The file ...
3
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1answer
7k views

Can't start Tomcat on Ubuntu

I installed Tomcat on Ubuntu. Then I created a new user. Then did: liferay@web-svr:~/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/bin$ chmod +x *.sh Afterwards, I added JAVA_HOME and PATH in bash like ...
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0answers
36 views

Ubuntu directory permissions - Sticky bit - Prevent deletion of a file [duplicate]

I have a database called oss-pwds.kdb located in a folder /keepassx. This is a password database that I use with the KeePassX software. I want to allow all members of the "oss" group to open and ...
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0answers
258 views

debootstrap error in Ubuntu 13.04 raring

I'm trying to create a file system in Ubuntu with the command: sudo debootstrap --foreign --no-check-gpg --include=ca-certificates --arch=armhf testing rootfs http://debian.raspbian.com/debian but ...
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0answers
222 views

vaio grub removal after default windows setup

After installing default factory windows xp from VAIO VGN-NR, and hence removing the Ubuntu on its hard drive, the grub does not allow the windows to boot up properly, giving the prompt: "no such ...
5
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1answer
6k views

Are Ubuntu PPA Repositories usable on Debian wheezy?

I'm using Debian wheezy and i wonder are Ubuntu PPAs hosted at Launchpad safe to be added & used on Debian?