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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2
votes
1answer
325 views

Specifying a dependency of a version greater than N and less than M

Is it possible to specify the dependency of another library that is within a specific range of versions? Like: Depends: Lib (<= 4) -- dependency of a library that has version less or equal to 4 ...
3
votes
2answers
141 views

Vim global search in a project

I started using vim two weeks ago switching from sublime and I am a ruby developer I know for a fact that Ack and Ag work very good on a Mac while they're not optimized for my Ubuntu machine. These ...
1
vote
0answers
93 views

Themed Tabs in Gnome Terminal

I've created a custom desktop session which upon login presents the user with a full screen gnome-terminal session. The idea is to have a TTY-like session but with the added advantages provided by X ...
0
votes
1answer
108 views

Why does exec file generate 4 processes in Linux? [closed]

I build my RTAI-model-source(generated by simulink) in CygWin with gcc-linux-4.1 (cross-compiler of CygWin) on Windows, and generate ELF successfully. and the ELF runs correctly on Ubuntu. After the ...
1
vote
0answers
161 views

add audio from playing file to microphone stream

I need to add a sound to what the microphone is capturing, is it possible? I started with man aplay and found that I can do aplay -D PCMdevice filepath.wav so then I listed the PCM devices with ...
1
vote
1answer
234 views

How to prevent the termination of Anacron jobs after battery mode commences?

I have a backup script which is run daily by Anacron. It can take around 3 hours to complete. I'm happy for Anacron not to commence the script if the laptop is running on batteries, but once started, ...
4
votes
2answers
5k views

Point USB phone to specific /dev/ttyACM using udev

We have a Nagios + check_mk setup on Ubuntu 12.04 LTS server with smstools for sending text message notifications. We are using an old Nokia 6230 phone connected by a USB cable, though I do not ...
2
votes
2answers
1k views

How to disable wlan0 when shutdown

Since a long time ago my Sony Vaio with Lubuntu 11.10 is showing a red FAIL message during the shutdown process. It tries to kill some process and the white messages on the screen frozen for some ...
7
votes
4answers
3k views

Tmux xclip copy no longer working

On mu ubuntu 12.04 setups my tmux clipboard copy and paste commands are setup as follows: set -g prefix M-a unbind C-b bind C-c run "tmux save-buffer - | xclip -i -sel clipboard" bind C-v run "tmux ...
0
votes
1answer
56 views

Disconnect a disk correctly

I wanna disconnect a disk from an array which is the correct process umount file system remove from volume group i dont know this step disconnect physically the disk
1
vote
1answer
56 views

Is it a good practice to use svn for two different applications but on the same server?

Is it a good practice to use SVN for two different applications but on the same server ? I'm asking this because, whenever I update one of the application with svn it does not ask for password ...
6
votes
1answer
15k views

How can I set up a usb printer as a network printer using a linux server?

Basically right now I have a USB only printer, it's very nice. There are 5 people in my household and we all are constantly wanting to use the printer. Windows has a built in way to share the ...
4
votes
1answer
963 views

BCache and disk encryption

I recently bought a new laptop with a 16Gb mSATA SSD cache drive. I haven't used that one yet. I have, however, opted for Ubuntu 13.04 with "Full Disk Encryption" for the main partition (is that ...
4
votes
1answer
1k views

Fedora 18 guest in VirtualBox 4.2: How to assign static IPv4 address to guest regardless of active ethernet interface on host

I have a Ubuntu 13.04 host running VirtualBox 4.2.12. This host has both a wired and a wireless network interface, but only one of which would usually be active at any given time. For example, at home ...
4
votes
1answer
2k views

Alt+tab key not working in NX client for linux

I am using NX clinet-3.5.0-7 version running on ubuntu 12.04. I am trying to use Alt+Tab key to switch between different terminals on my NX client but I am unable to do so. When ever I use Alt+Tab, it ...
1
vote
2answers
567 views

SSH agent loses keys after logging out

I added my SSH key having typed ssh-add ~/.ssh/id_rsa and ssh-add -l printed my key. But after logging out and logging in again I see The agent has no identities. I've tried setting a very ...
2
votes
3answers
14k views

Unable to set hostname for use within network

I am having a lot of trouble setting up a hostname for my home server for use within my home network. My home server is running Ubuntu 12.04 LTS and all packages are up to date. Management of this ...
1
vote
1answer
740 views

upgraded to Ubuntu 13.04 Server, do-release-upgrade still shows

I upgraded my server to Ubuntu 13.04 Server a while ago. However, the notice that tells me there's a New Release '13.04' available. Run 'do-release-upgrade' to upgrade to it. still shows. Obviously, ...
6
votes
2answers
9k views

How to find speed of wlan interface?

I'm trying to find speed of network interface using file-descriptor. It's easy to do it for ethX, just calling cat /sys/class/net/eth0/speed. Unfortunately this method doesn't work with wireless ...
1
vote
1answer
1k views

Binding a particular IP to a port in apache2

In How to set-up a online SVN server on my laptop I asked to give access to my SVN server installed on my laptop to some of my friends siting in another part of country.I set-up a SVN server.I was ...
4
votes
2answers
1k views

How do I detect wheter the audio cable is connected?

I'm using Ubuntu Lucid (10.04). In my shell script running as root I want to detect whether an audio cable (analog jack) is connected to the laptop or not. How do I do that? I don't need a portable ...
2
votes
1answer
212 views

Add Ubuntu to list of Grub boot options

I have an old laptop with an old version of Debian. I would like to install Ubuntu as well. Is it possible to install Ubuntu from the HD (not a rescue CD or flash-drive) and have it reside as a Grub ...
2
votes
1answer
593 views

How to set-up a online SVN server on my laptop

I had created a local SVN server on my laptop running Ubuntu 12.04 and its working perfectly fine. Now I want to make my laptop as server for some valid users who can access my SVN server though ...
0
votes
2answers
755 views

Triple Booting; Windows, Ubuntu, Linux Mint by Windows Installer

I wanted to install Linux Mint 14.1 using the Windows Installer (mint4win.exe). I copied mint4win.exe to HDD, and when I running it, it prompts me to uninstall Ubuntu. Previously I installed Ubuntu ...
0
votes
1answer
578 views

Half screen appears to have film on it. Acer C7 Chromebook running 13.04

Right side of the screen is not processing colors properly. Does not show up in white space but when colors deep colors occur the right side is lighter and it seems to be a bit blurry as well. I ...
2
votes
1answer
839 views

building/compiling kernel headers

I am compiling kernel 3.4 and 3.8 for different target devices. I would like to install compat wireless driver which requires kernel header. Could anyone tell me how I can compile/build the kernel ...
2
votes
1answer
149 views

UART0 Access in AM1808 using Embedded Linux

I am trying to interface GSM module with my AM1808 processor. I am using gcc compiler as well as UBUNTU 10.04 Lucid. I have configured the TXD and RXD pins of UART0 but i can not access the RTS and ...
3
votes
1answer
148 views

Ubuntu filesystem buffers/cache always empty

I have a virtual server with ubuntu 10.04.4 LTS and plesk (preinstalled by hosting company). Now i have seen that the buffers/cache are always empty. Current uptime is 22 days. free and htop shows the ...
18
votes
6answers
35k views

keyserver timed out when trying to add a GPG public key

I am trying to add a public key for installing a program with CPG. But i am pretty new to this but every command i found gave me the same error: gpg --keyserver keyserver.ubuntu.com --recv-keys ...
3
votes
2answers
569 views

How to monitor the last PID assigned by the kernel?

To monitor process creation I'd like to periodically write the last PID assigned by the kernel to any process on the system (not just processes created by the PID-monitoring program) with a time stamp ...
0
votes
1answer
258 views

Set up an email domain with Postfix and Dovecot

I am very new to the Linux world so please forgive me. I have a VPS running Ubuntu 12.10 x86 and I have installed Rails3, Nginx, Mysql and Passenger. All are up and running. I want to set up mail so ...
23
votes
4answers
13k views

What doesn't need defragmentation? Linux or the ext2 ext3 FS?

Why don't you have to defrag a Linux system? Because it's using the ext2/ext3 file system or because it's Linux? That's relevant, because a have a double boot system (W7 / Ubuntu) and a common ...
0
votes
0answers
519 views

Tracing system call on Ubuntu 12.04

The main task I have to carry out, is to trace the system call of processes in ubuntu 12.04 LTS. Problem is, I am unable to trace them continuously, i.e. as soon as they are added to the system, they ...
2
votes
1answer
6k views

I need a step by step guide to build kernel modules in ChrUbuntu

I don't have experience building kernel modules. And worse, I'm trying to do it on ChrUbuntu, so it seems that I cannot follow the existing Ubuntu guides. For example, this command fails: # apt-get ...
3
votes
3answers
18k views

Ubuntu make fails with No such file or directory /lib/modules/3.4.0/build

I am trying to build the CP210x driver for the 3.x.x kernel on ChrUbuntu. Build instructions: Ubuntu: make ( your cp210x driver ) cp cp210x.ko ...
3
votes
1answer
9k views

USB to Serial in Chrubuntu - /dev/ttyUSB0 missing

The usbserial stuff has been working so well for me in Ubuntu for a number of years that I have almost forgotten how to troubleshoot it. I just installed Chrubuntu, however, and now my usbserial is ...
3
votes
1answer
176 views

Window contents disappear after maximizing

Window contents usually disappear after Maximizing them! Especially Firefox. I'm running Ubuntu 12.10 on a Vaio Z56 laptop (graphics card: nVidia GeForce 9300M GS). I've read this question before and ...
0
votes
2answers
3k views

Unable to connect INTEX 3.5G (aka 普创E003) Wireless USB modem in Ubuntu 12.04 LTS

Can anyone help me out on connecting INTEX 3.5G 7.2 Mbps (aka 普创E003) Wireless USB modem in Ubuntu? Initially it is recognized as a storage device and the modprobe cmd does not create any impact on ...
0
votes
1answer
57 views

Is there a clang-snapshot?

I've just discovered the wonderful gcc-snapshot package for Ubuntu. I don't see a clang-snapshot or llvm-snapshot package though. Is there an equivalent for clang?
2
votes
0answers
380 views

Install man pages in directory with update-alternatives

Using update-alternatives(8) on a Debian system it is possible to add man pages as slaves under some master alternative. For example, the following command installs an alternative man page tclsh.1 ...
2
votes
2answers
780 views

Lenovo ThinkPad E430 - 32 or 64 bit?

I just bought a Lenovo Thinkpad E430 and want to install Ubuntu in it. But I don't know whether I should install 32 bit or 64 bit. Its core i5 3rd generation and 6gb ram (2 + 4)
2
votes
1answer
3k views

Running Ubuntu of a USB stick. Can't install wireless driver

I've installed Ubuntu 12.04 on my 8 gb USB stick, and got it running. It seems like I don't have the full Ubuntu OS on the stick though, and that was my intention. Anyway, I can run a "demo" version ...
0
votes
1answer
461 views

Anti Aliased Fonts with NoMachine NX

I am running nx server on a headless ubuntu server. Its desktop is to Unix -> Custom -> Emacs which gives me an Emacs window on the local machine. The only thing that does not work as expected is the ...
3
votes
2answers
1k views

Finding yum equivalents of apt repositories?

I have code to setup an Ubuntu server that relies on apt-get. It has lots of packages as documented on our project wiki, for example these: development environment and the ruby dependencies. However, ...
0
votes
1answer
63 views

How to remove a package for the current user?

How can I remove a package for a given user but leave it installed so that other users can still access it? I'm using Ubuntu 12.10.
1
vote
1answer
355 views

Networking not working on ubuntu server 12.10 on B75MA-P45 mobo

Just got some new parts to but together a local development server with Ubuntu server 12.10 and I can't get networking working. I have an airport extreme for my router and it works find with CentOS ...
1
vote
1answer
396 views

HAProxy should not forward an incoming request to down instance

In my scenario, I have 2 servers, both are communicating with HAProxy. When a request comes in, HAProxy splits the request and sends it to both servers, following a round robin method. If in any case ...
1
vote
1answer
1k views

How can I test whether the output from a command is null or empty string? [closed]

I'm trying to get a pre-commit hook script to work on our old SVN box. It's very old, running Ubuntu Server 8.04. This script: @echo off :: :: Stops commits that have empty log messages. ...
3
votes
1answer
835 views

Power consumption monitoring problem

I used powertop v.2.1 under Ubuntu 12.04 but it missed the power est. column.It's the same situation as described https://bugzilla.redhat.com/show_bug.cgi?id=796068‎ and that bug is supposed to be ...
1
vote
1answer
385 views

LAMP Server setup for personal development

I am setting up a LAMP server in VirtualBox for personal development. This will be an Ubuntu Server 12.04 install, and I will be using Virtual Hosts for Drupal, Yii, and other small PHP apps. Ideally ...