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 can I print unique line base on particular column value using awk? [closed]

I have a comma separated file with multiple fields. Example: candidate1,12,56,ATTG candidate2,45,90,ATTG candidate3,90,140,ATTG candidate4,2,36,AGCT So, does anyone know the answer?
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1answer
176 views

Dropbox, notify-send and OSD interfere with Ctrl-shortcuts

I'm using Ubuntu 13.04 with i3 4.5.1. When i3wm starts, Ctrl-C/-D/-K etc. are working fine. When I start Dropbox, notify-send or change the volume, all Ctrl-something shortcuts stop working. I can ...
2
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0answers
58 views

How to use Gnome's extensions

I have been trying to install some Gnome extensions from the site https://extensions.gnome.org. I get the dialogue asking if I want to install, but after I select yes, it fails silently. This is the ...
0
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1answer
782 views

Ubuntu 13.04 seems to randomly crash

I'm using an x64 distro of Ubuntu 13.04 on a Dell inspiron 1464, but it keeps crashing for no apparent reason. Took some pictures of the error screen (first picture is of one instance, the rest are ...
2
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3answers
246 views

Automated mounting for usb drives in linux

I have a five 4TB usb drives. I want to setup a mount point, /mnt/backups so that when I plug in any of those drives, they get automatically mounted to /mnt/backups. The problem is that when the ...
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1answer
141 views

Unable to install open CV in Ubuntu 12.04

I am trying to install openCv for learning purpose and then using it for OCR(Optical Character Recognition) but i am unable to install it in Ubuntu 12.04 I am following this link and able to carry ...
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0answers
169 views

Ubuntu change language encoding for file uploading

Previously we were running a Wordpress site on a Mac OS Server machine. We had several hundred images with Chinese characters for the image names. Now we're trying to migrate to a Ubuntu system and ...
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0answers
562 views

Why does resume from hibernation pause/hang?

I used suspend (to ram) for a long time, and it worked flawlessly. Recently, I started using hibernate (to disk) - not-quite-flawlessly. Hibernate-to-disk works (from the terminal, so far - as ...
3
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1answer
472 views

How can I figure out which pty's are from which qemu?

I'm running qemu's like this: $ sudo qemu -boot d -m 1024 \ -netdev tap,id=tap0 \ -device virtio-net-pci,netdev=tap0,id=vth0 \ -drive file=ubuntu.iso,media=cdrom,cache=none,if=ide \ -monitor pty \ ...
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1answer
294 views

Open luks-encrypted partition from virtual DomU LVM disk containing another LVM

I've gotten myself in a bit of a bind, here. A while ago I set up an encrypted Unbuntu 13.04 under Xen. It's virtual disk is an LVM LV. This LV was presented to the DomU as a (whole) physical disk ...
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1answer
92 views

Problem with wifi in Ubuntu

I'm not able to see (or access) my WiFi in Ubuntu. tharcisyo@tssd:~$ iwlist scan eth0 Interface doesn't support scanning. lo Interface doesn't support scanning. wlan0 Failed to read ...
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4answers
317 views

Why is the available space in my $HOME decreasing?

My OS is Ubuntu 12.04. As System Monitor shows, "free" for my $HOME is 1.6GiB, but "Available" is 222.7 MiB and is keeping slowly decreasing from around 750 MiB yesterday. I am not aware that I am ...
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0answers
253 views

What is the difference between RGB and YCbCr?

In my Linux Mint ATI Catalyst setup I have set YCbCr as default for Color Pixel Format? What is the difference? I subjectively think that RGB (Full RGB) is better for my eyes. YCbCr seems to be ...
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1answer
188 views

Do all distrbutions have the same drivers for ATI cards?

The problem is that my fan is too loud and working nonstop on my desktop. I have tried so far: Ubuntu 13.04, Linux Mint 15 and I had in both the same fan problem (nonstop working fan and very ...
0
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3answers
244 views

Change terminal prompt Ubuntu

I have cloned a git repository to a folder in my workspace: /home/jose/workspace/very-very-very-long-repository-name/ so when i browse to it in my terminal it looks like ...
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1answer
2k views

Equivalent of these commands in the following distros [closed]

These commands: dpkg -i apt-get install apt-get update apt-get remove apt-get dist-upgrade apt-get purge in these distros: Opensuse, Fedora, Gentoo, Arch, Slackware.
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1answer
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Ubuntu / Unity attach script to Launcher

I recently downloaded IntelliJ IDEA and start the app by running . idea.sh. The app appears in the launcher while I'm running it, but for some reason when I right click on it I don't get a 'Lock to ...
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4answers
2k views

Crontab not working

I'm trying execute a basic shutdown crontab to run M-F at 10PM. So I did the following: sudo crontab -e Once inside of the crontab I added the following line: 0 22 * * 1-5 shutdown now The job ...
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0answers
926 views

Rotating a video (ubuntu 12.04)

I have a video, shot on my android phone, which I want to rotate 90 degrees clockwise for computer viewing. Here's what I expect should work: ffmpeg -i infile.mp4 -vf "transpose=1" -an -vcodec mpeg4 ...
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1answer
89 views

Nvidia driver for Debian

Is there a "real solution" or driver for Nvidia Optimus graphic cards? I tested a lot of alternatives but no success. I know a lot of users face the same problem with Debian or Ubuntu-family. This ...
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3answers
545 views

How compatible is Centos in respect to hardware for desktop systems?

I have been tasked with creating a promotional/sales tool for our clients and sales people . (about 8400 users) It is expected that the tool will be used on office and home systems. The tool will ...
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0answers
268 views

Can't connect unsecured wifi from Wicd or terminal

I can connect without issue to WPA networks, but if I am somewhere like a hotel and try to connect to an unsecured WiFi, things hang at the DHCP part and I don't get an IP assigned. I'm running ...
2
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1answer
4k views

How do I get my wireless USB mouse working

My wireless USB mouse is not plugging and playing. This is my first time using linux (Ubuntu 12.04) and I'm trying to get a development environment going to learn to use the shell, Python, and other ...
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3answers
390 views

denyhosts is blocking existing users from logging in from unknown (new) IP addresses

I have denyhosts set up and working on Ubuntu 12.04. It apparently works well, except it is too strict. I can log in from any IP address that I have added to hosts.allow in advance. My sshd_config ...
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1answer
2k views

NTP not syncing in a VM

I'm managing some VirtualBox developer environments. The time drifts out of sync when the box is suspended, so I want to use NTP to keep it in sync. NTP doesn't seem to be doing its job, though - the ...
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3answers
498 views

Fastest way to convert a large amount of FLACs to MP3s

I'm looking for something that can take advantage of my GPU or at the very least, multiple cores of my CPU to convert a few terabytes of FLAC to mp3 (VBR v0) very quickly while preserving all of the ...
2
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1answer
355 views

tun0 enabling after installing openvpn

I just installed openvpn but can't see tun0 when I do ifconfig. when I ssh to a remote server, I get the error: debug1: Authentications that can continue: publickey,password How can I enable it? ...
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4answers
18k views

Ubuntu 12.04 hotspot wifi network not visible to Android 4.1.2

I'm running Ubuntu 12.04 LTS on my notebook, and I've got a Motorola Razr which I updated to Android 4.1.2. Before updating, I connected my smartphone to my hotspot wifi very quickly, but after the ...
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0answers
97 views

nginx should not handle unicorn's request

I have a server on which I have configured Nginx and Unicorn, where Unicorn servers static pages. In my case I'm writing a rewrite rule in Nginx that, if a request comes to mydomain.com it should ...
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3answers
512 views

Directory appears as file?

So we copied some photos in a directory across to a NTFS partition last night, and they were viewable from ubuntu. Today the directory is not accessible from Windows, and when we booted back into ...
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1answer
2k views

“PS/2 Generic Mouse” gets lost. How to reload without reboot?

I am running Ubuntu 12.04LTS on a ThinkPad E420s. My Trackpoint is recognized as "PS/2 Generic Mouse". My problem is that it doesn't load/disappears after booting or after suspension. I can't move ...
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1answer
90 views

Cron job doesn't seem to be executing in ubuntu

I have a script located /myscript/script.sh and I have a cronjob that I submitted like this: sudo crontab -e The contents of the crontab are as follows: */1 * * * * ./myscript/script.sh The ...
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1answer
315 views

Is it possible to configure applications to use different network interfaces differently? If yes, how?

I am running scrapy on ubuntu server 13. And while it is crawling the network becomes very slow and it becomes difficult to even ssh into the system. I think I can solve the problem by having one ...
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1answer
671 views

Why is my shell script hanging on `apt-get -y upgrade`?

Ubuntu : sudo DEBIAN_FRONTEND=noninteractive apt-get -y update sudo DEBIAN_FRONTEND=noninteractive apt-get -y upgrade sudo reboot Script is always interrupted after upgrade and then it will stay on ...
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1answer
110 views

executable lies about own existence [duplicate]

Okay, I'm completely baffled on this one. I'm installing a piece of software called InterPro Scan for my superiors, and it is complaining about an executable not existing. Please see below. ...
2
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1answer
2k views

Font letter spacing issue with PhantomJS/wkhtmltopdf on Ubuntu

I'm using PhantomJS/wkhtmltopdf on Ubuntu 12.04 LTS to convert HTML to PDF and get very strange letter spacing errors. For instance, the internal distance between es and xa seems very random and ...
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3answers
554 views

Make web project writable by apache and other user

I am running ubuntu 12.04 LTS . To be able to view my web project in the browser I did the following: chown -R www-data:www-data /var/www/project Now I wanted to open the project in netbeans but it ...
3
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1answer
673 views

Procmail: Denying special privileges for “/etc/procmailrcs/default.rc”

I'm trying to setup postfix, dovecot and procmail to work together with virtual users. In the end I want to have virtual users and the possibility to add rules to sort incoming rules. For the last ...
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2answers
196 views

adding additional tracks using sox and the command line

I'm trying to add additional tracks using sox using the command line Example: I have several different stereo tracks a drum track, vocal track, effects track, etc. Can I add additional stereo tracks ...
0
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1answer
187 views

Find used drivers for printer

My printer CANON PIXMA MP170 (usb) doesn't work on Debian 7 amd64 but does work on my Ubuntu 12.04 i386. I've tried a lot of tutorial about this but no success. So for now I'd like to to know more ...
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0answers
121 views

GPU not listed in lspci after SysRQ reboot

I have my Ubuntu Server machine with XFX 7970 GPU in it, and sometimes, when ATI driver fails, I have to reboot it manually. When I'm trying to reboot the machine using SysRQ, the system reboots ...
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1answer
93 views

How can I view foreign languages in Chromium?

I just installed the minimal version of Ubuntu. (To be specific, I installed Ubuntu 12.04 "Precise Pangolin" 32-bit.) This version does not have all the tools that are usually avaialble in normal ...
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2answers
339 views

Getting wmctrl to work with multiple Emacs windows

I'm trying to write a script that switches focus to Emacs. This is what I have: #!/bin/bash wmctrl -a 'emacs@pat-ubuntu-desktop' It works fine when there is only one Emacs window (or "frame," in ...
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2answers
3k views

SSH tunneling: connect_to localhost port 22: failed

I want to connect from my computer to a remote computer using a middle server(u port forwarding). I run this command on remote computer: ssh -R 9300:localhost:22 user@middleserver and this one on ...
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2answers
4k views

D-Link DWM-156 HSPA USB Modem doesn't work with SIM card inserted

I have a D-Link DWM-156 HSPA modem, that I bought just a few days ago. The modem has drivers in its internal storage. There are Debian packages (.deb) for both i386 and amd64, so obviously I installed ...
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1answer
169 views

krusader - single queue instead of multiple queues

I need to copy a whole bunch of files from various directories onto an external drive. I thought Krusader might be the best tool for this job. As I select and copy different files, a new queue ...
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3answers
4k views

Unable to mount ext2 hard drive

I have been trying to mount an ext2 hard drive in ubuntu server, but when i run sudo mount /dev/sdb /media/mynewdrive -t ext2 I get wrong fs type, bad option, bad superblock on /dev/sdb1, missing ...
2
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2answers
98 views

Creating a User-less Distro

One of the popular programs I use is GParted, and it has its own custom distro, that boots straight to the desktop, and starts the program. I couldn't find any information on creating such a distro. I ...
3
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2answers
5k views

How to Install Oracle 11gR2 on Ubuntu Server 13.04

I want to install Oracle 11gR2 for Linux on Ubuntu Server 13.04. I have downloaded Oracle 11gR2 for Linux, and when I execute use runinstaller it require GUI supported files. While Google I got ...
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0answers
387 views

Ubuntu cannot start from terminal

Ubuntu 12.04 By a mistake, I stopped lightdm. Then switched to tty1, and rebooted. Now, After startup, It just came a black screen with a cursor, can type nothing. I tried Ctrl+F1 to F12 (and ...