Ubuntu is a free open source operating system based on the Debian GNU/Linux distribution. Consider using http://askubuntu.com/ to ask questions about it.

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Error on ubuntu server testing - “fio: first direct IO errored.”

I'm working on a VM to test caching algorithms. The tool I've chosen to push IO is fio (click for HOWTO) given its flexibility. What I don't understand is why running on this ubuntu server 14.04 image ...
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1answer
49 views

Booting a second, encrypted Debian installation from Ubuntu grub command line

I have a stable dual boot between Ubuntu 14.04 and Windows 8.1. I am installing a second flavor of Debian. It has three separate partitions: / is an encrypted luks volume located at (hd1,gpt9), /home ...
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21 views

Converting 32 bit MLP to 32 bit FLAC?

I have some .MLP files which I'd like to convert to .FLAC for easier playback. Examining the file with ffmpeg version 0.8.13-4:0.8.13-0ubuntu0.12.04.1 I get Stream #0.0: Audio: mlp, 96000 Hz, 5.1, ...
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16 views

Read Leap Motion tracking data from guest VM on host machine using WebSockets and VirtualBox

Ok, so I am trying to get the tracking data from my Leap Motion from inside a Virtual Machine and use the tracking data on my host machine. Guest OS: Ubuntu, using VirtualBox Host OS: Windows 8.1 I ...
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1answer
26 views

shellinabox - How can I restrict access to certain users only?

I've got a Ubuntu 14.04 machine which I've set up with shellinabox. Now I would like to restrict access to shellinabox to only a certain user account. Nobody else should be able to log in with it. ...
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17 views

Problems with dual boot

I have windows-8 on dell inspiron. I dual booted it with ubuntu 14.04 Windows and ubuntu share the same partition ("Local Disk C"). From then, I am facing a lot of problems. 1. PC hangs suddenly. 2. ...
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11 views

Install VMPlayer on Ubuntu Live USB

I want to install VMPlayer or other virtualization software on a Ubuntu Live USB. How can I edit the image file so can write new image file to USB and can boot live usb image , and run VMPlayer ...
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14 views

Ubuntu insert key not working in applications under GNOME

My insert key seems to have stopped working, in all applications (vim, gedit, etc.). However, if I change from Gnome flashback to TTY#1, i.e., non-graphical mode, the insert key works just fine. I ...
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15 views

can't boot windows 8 need hel on grub-repair

After installation my grub is a complete mess. Now I've got 5 options. First two options for linux and the rest are various supposed windows 8 choices. What can I do? I need desperately to log into ...
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1answer
103 views

Where to find clipboard history Ubuntu 14.04

I have deleted something but I had copied before. Ctrl+v shows only the last copied text. I tried to install diodon and cliplt. As I understand they start to archive some history of the clipboard. But ...
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1answer
72 views

How to use Virtual Box with a Disk image created with Norton Ghost?

I was given a file with "sv2i" extension and a couple of "v2i" files. According to my search, it is a disk image created with Norton Ghost. I converted the sv2i file to a vmdk file, which apparently ...
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1answer
25 views

Unable to connect to internet with VirtualBox?

Earlier, I was using multiple instances of Virtual Machines running Linux Ubuntu 14.04 on VirtualBox. They were working fine, with internet connectivity, etc. However, I then created a new Virtual ...
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40 views

Port forwarding works on Ubuntu but doesn't work on windows

I set up my wireless router to port forward 80 -> 80 (as well as 8080 -> 80) to my local http server. I have dual boot windows + ubuntu and both of them have apache installed. The problem is if I boot ...
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1answer
35 views

Grant Ubuntu root permissions to ldap user

I have a development Ubuntu machine attached to our corporate domain. I have root permissions on this machine, however my ldap account does not. I would like to grant my ldap user unrestricted local ...
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1answer
40 views

Not able to acces internet in an Ubuntu Guest in a Windows host using Oracle VIrtual Box

My Machine is a WIndows 7 enterprise edition. The network in my institution is setup in such a way that Mac Addesses have to be registered in the system to work. I installed the plain and vanilla ...
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26 views

How do I create & restore a mysql database dump with Chef?

Environment Ubuntu 12.04 Precise64 Enterprise Chef opscode-cookbooks/mysql opscode-cookbooks/database Wordpress 3.9 Objective I am trying to replicate/clone my production Wordpress server. I'd ...
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1answer
20 views

Suppressing stderr in GNU Parallel

I'm using GNU Parallel to concurrently run a command several thousand times. To get logs of the execution I'm using --files and --results. To get nice progress bar while it's running I'm using --eta ...
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15 views

calling play framework from command line

I'm running ubuntu 14.04. I unpacked play framework 2.0 and updated PATH variable with my_play2_path but still when I try to type play from command line it calls an audio/video player instead. What ...
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1answer
39 views

init.d control script for virtualbox VM

I have an Ubuntu server on which a Virtualbox virtual machine needs to be running at all times. The VMs are administered by a specific user VMAdmin which has no admin privileges. I need to create a ...
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1answer
44 views

Why does GPG Encrypt/Decrypt fail between different versions of GnuPG?

I have 2 servers that will be passing data between them, one is Ubuntu and the other is Red Hat. Using the already installed versions on each, Ubuntu is 12.04 with gnuPG 1.4.x and Red Hat is ...
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2answers
85 views

Boot Ubuntu 12.04 on Samsung ATIV book 8

I am trying to boot Ubuntu 12.04(64 bit) on the laptop Samsung ATIV book 8. Samsung ATIV book 8 came with Windows 7. I am successfully able to install Linux Ubuntu 12.04 on the SSD using USB pen drive ...
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1answer
26 views

Unable to start PHP Server in linux command line

I tried php -s localhost:4444 WebContent/ But my ubuntu terminal gives Usage: php [options] [-f] [--] [args...]
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1answer
385 views

Apt-get update error Linux Mint 17

I've just changed my os to Linux Mint 17, but I'm having some trouble when I try to run sudo apt-get update [EDIT] Now I have the following errors: Err http://extra.linuxmint.com qiana InRelease ...
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18 views

Why does my cursor disappear in Ubuntu Linux, but appear again when closing it for a minute?

I have a problem with my mouse in ubuntu. The cursor disappears sometimes and I can't do anything but close my laptop for a minute, after which the cursor will appear again! What should I do with ...
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1answer
236 views

Unable to mount 2TB NTFS hard drive in Ubuntu 14.04

Can somebody assist me on this one? Error mounting /dev/sdg4 at /media/jote/DATA_4: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sdg4" ...
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31 views

Ubuntu doesn't boot after fsck on /

I had this problem with Ubuntu when it boots: http://askubuntu.com/questions/392720/the-disk-drive-for-tmp-is-not-ready-yet-s-to-skip-mount-or-m-for-manual-recove The problem appeared from nothing, ...
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1answer
29 views

Run sed as a one-off ssh command

I would like to substitute a string with another in a file on a server of mine. I've tried doing this: ssh $REMOTE_HOST sed 's|export ${KEY}=${VAL}|export ${KEY}=${NEW_VAL}|' "$ENV_FILE" And a ...
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13 views

Running supreme commander forged alliance in dual monitor mode

I have ubuntu 14.04 64bit with wine 1.7 I installed FA via steam on wine and FAF as well. both run decently although, FA does not detect my second monitor. is this something wine is incapable of ...
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24 views

Can't write files using new user on Linux Ubuntu via SSH

So I just added a user to my server, let's call it "user2", when I tried uploading a file via Filezilla while logged in to "user2" I got the error open for write: permission denied, so I assume ...
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3answers
141 views

Not able to dual boot windows 8.1 and ubuntu

I installed ubuntu in a laptop already installed with windows 8.1. But while booting it does not give an option to boot into ubuntu. So I tried with easy bcd. The boot menu is not showing ubuntu. So I ...
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180 views

Google Chrome crash the whole system on Xubuntu 14.04

I have been using Google Chrome with Hardware acceleration with no problem and very good results on my Xubuntu 14.04 Dell Latitude E6440 with Radeon GPU. Lately, (probably due to some "System Update" ...
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1answer
48 views

Sublime Text 2 remapping keys

I'm using sublime as my main text editor and I am remapping my arrow keys from the arrows to alt+i, alt+j, alt+k, and alt+l. I have noticed that on Ubuntu 14.04 after I remap my keys that when I ...
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0answers
25 views

Unlocated Space cant be used for other partitions

So some weeks ago I installed the latest Ubuntu Os version in my pc, I gave it like 12g and then 4gig for the hybernation temp storage. Yesterday I realized that I wasn't going to use it anymore so I ...
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25 views

Detect spambot on ubuntu 12 TLS

Recently I discovered in my mail log that there is an enormous amount of spam being sent from my home server. I am running no websites, just zpanel. I closed down all the ports and am monitoring the ...
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1answer
30 views

Where I can find a repository for an old version of Ubuntu [duplicate]

I am using raring and just noticed that I can't install packages any more (404). I checked a couple repositories and raring is not there. Turns out it's been EOL'd, at barely 10 months old, it seems a ...
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1answer
42 views

What is causing my computer to be slow all of a sudden? New version of Firefox/Ubuntu? Script error? Old computer?

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. When the above shows up, I click continue ...
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3answers
36 views

Acer Aspire 7741Z cannot install Windows

I have an Acer Aspire 7741Z that crashed on me and I had to replace the HDD. I didn't have a Windows disk to use for install so I installed Ubuntu. It works, it boots, everything is fine. Now I ...
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1answer
42 views

Mounted drive changed mount point after motherboard change in Ubuntu 14.04

I changed chassis and switched motherboards from an Asus Z87I-Pro to an Asus Z87-Pro - essentially the same except for form factors. While switching, I made note of how the hard drives were connected, ...
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1answer
46 views

ssh authorized_keys permission denied only until file is listed/stat'ed - VERY STRANGE

Ubuntu 14.04LTS running openssh. I'm getting a Permission denied (public key) when I try to ssh in using my public key. /var/log/auth.log shows "Could not open authorized keys ...
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1answer
32 views

how to create ubuntu installable iso image from files

this might be a quite silly question but I lack linux knowlege so here it is... I have an ubuntu VPS from which I need to create a development environment under my WMWare. So I wonder if the ...
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15 views

Install measuremet lab's command line client on ubuntu(Linux) for speed test

Is there any script or simple way to install ndt on Ubuntu. Installation process on site says that we have to patch w100 file to kernel and much more which is too complex so I am in search of simple ...
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96 views

How to install top & htop on Ubuntu 8.04.2 LTS (hardy)

Env. Rackspace Ubuntu 8.04.2 LTS (hardy) I am in a corner situation where I need to maintain carefully a legacy server before I can plant for an upgrade. Actually an upgrade is not an option, I ...
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1answer
51 views

How much RAM should I put aside for ubuntu virtual machine

I currently have windows 8 in my laptop with 4 gb RAM.. I recently installed the virtual machine of ubuntu. Now I need to run a tool whose memory requirements are as follows : 1) Atleast 5 gb RAM 2) ...
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2answers
169 views

Docker “hello world” example doesn't work. “no such file or directory”

I'm totally new to playing around with Docker(.io) so I've just been RTFM'ing the main site, and hit a problem early on with their example "Hello world". It seems like a few other folks have had the ...
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1answer
30 views

ubuntu superuser got corrupted

I was trying to save times to type password for sudo because one of my scripts had to be randomly repeated quite often. I googled some information about how to bypass typing password and applied to ...
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1answer
28 views

LightDM accepts password once, and never again

I'm running Ubuntu 14.04. Fresh install, although I'm pretty sure I'm going to need to reinstall after this problem is resolved. When I first start Ubuntu, I get the LightDM login screen. That ...
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66 views

apt-offline still fails on Ubuntu 14.04 as of 2014-07-24

One of the answers in Debian: updating package lists with apt-offline, --simulate not understood for apt-get update mentions that the issue was fixed in Ubuntu 14.04. However, on my Ubuntu 14.04 ...
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1answer
14 views

WinSCP has to constantly reconnect to my Ubuntu Server

I am on a Window 7 machine so I am left to using a tool like WinSCP to manage my remote servers which run Ubuntu. I do use a good old command line too but for file management I generally use WinSCP, ...
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1answer
40 views

Ubuntu: Keyboard language switching by Ctrl+Space

Don't ask me why but I want to switch between keyboard languages (I'm using US/UA) by pressing left control + space. I don't see this key combination in the appropriate settings, unfortunately. ...
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3answers
30 views

SSHing into a Ubuntu VM instance

I have an Ubuntu VM instance running on my laptop. Both Host and VM run the same OS - Ubuntu 12.04. I tried to ssh from host like ssh username@<VM-IP> It tries for some time and then says ...