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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Why can't I change the hostname of my server using sudo? [duplicate]

From a user that is part of the sudoers group, I can normally run any command by doing sudo <command> But the following command fails stating "Permission denied" sudo echo "myhostname" > ...
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1answer
207 views

dota 2 graphics problem in ubuntu 14.04

i installed ubuntu 14.04 in my laptop. then i installed steam and finally dota 2. but the graphics are very bad. i have amd raedon 7400 in my laptop. it seems like dota 2 is not running through my ...
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2answers
27 views

How to properly mount new hdd, to free up the old one

I installed a new hdd /dev/sdb1, and mounted to /home/ubuntu/new1, and moved some files there to free up the old hdd, but when I do du -h new1 is still takes space in the old hdd, below are my fstab ...
2
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1answer
19 views

Cannot write to sector - boot Ubuntu

So I was in an airport working and I closed my laptop. When I brought it back up again, my screen was black so I kill switched. Now when I boot, I get "cannot write to sector". Anyone got any ideas? ...
1
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1answer
33 views

Linux system files moved, how to return by booting from an installer?

So I accidentally 'sudo mv' my files from /* (root directory) to some directory inside my home directory. My OS stopped working and I rebooted. Then I encountered the error: file ...
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0answers
59 views

Mounting synology disks in ubuntu

I have some files on synology disk that I would like to recover with extundelete. I have mounted the raid1 setup. So on the disk is two raid storages (md2 and md3) and they are connected to one with ...
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0answers
41 views

Network communication between two nodes in a Hadoop cluster

I am running a 7 node hadoop cluster with each box running Ubuntu 12.04. It is running CDH4 setup using Cloudera Manager. It was already setup and running when I came in but now I'm running into a ...
2
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1answer
73 views

ubuntu does no let me log in to my user, how can I fix it?

My ubuntu has just crashed. Now that I restarted it, it does nothing when I enter my password. The screen just gets refreshed leaving the password space empty again. However, if I try to enter a wrong ...
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1answer
55 views

Received DUP when using ping. What should I do?

I was pinging Google last night and one of them came back as DUP(!). I did some reading and I found this in the man pages on ping(8): Damaged packets are obviously serious cause for alarm and ...
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1answer
183 views

Grub2 lost in new Linux distro install

So, I really need some help. Recently I was using a dual boot machine on the same hard drive. I had Windows 8.1 and Ubuntu GNOME 14.04. When I installed Ubuntu on top of my Windows install, I didn't ...
2
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2answers
89 views

Minimal install of Ubuntu

I'm fairly new to linux but I want to install it on my chromebook with crouton. Is there a way to install something like lubuntu or xubuntu without any of the software normally bundled? For example, I ...
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0answers
28 views

bugzilla access by client

I have installed the bugzilla in one virtual machine and another virtual machine i just executed bugz command to store the comment on appropriate bug in bugzilla. bugz -b ...
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1answer
79 views

Set maximum volume in Ubuntu/Gnome

I have the following issue with my volume settings (Ubuntu 12.04, 3.2.0-49-generic, Gnome 3, Lenovo X220): When I set the volume to maximum using the hardware volume keys, I get to "100%" in the Audio ...
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2answers
103 views

how to solve the error in cinder on openstack havana?

I am install openstack controller node for one machtion, and Another metchion running nova-compute only. so I am running controller node cinder will got error. I clearly meantion it which service ...
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1answer
45 views

Cant revert back to ubuntu from lubuntu

So this was my first time doing a dual boot in my computer and i successfully did install ubuntu. However, in ubuntu i curiously downloaded lubuntu (since someone said that it was faster since lubuntu ...
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1answer
20 views

Does an SFTP login get accounted for with `last`?

The title says it all. At first glance it dodoesn't show, but I also just learned about the existence of last as well.
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0answers
20 views

Auto-refresh NAS list in FreeRADIUS?

We're using FreeRADIUS to allow routers to our hotspot network: FreeRADIUS Version 2.1.12, for host x86_64-pc-linux-gnu, built on Feb 24 2014 at 14:57:57 We filter routers by their nasname in a ...
1
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1answer
201 views

Update single package from Ubuntu Utopic Unicorn when running Trusty Tahr

I'm tasked to update a package on a Ubuntu Server Trusty Tahr installation. Specifically rfc5766-turn-server which is really old on Trusty. https://launchpad.net/ubuntu/+source/rfc5766-turn-server ...
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1answer
45 views

text based tool for ldap queries

I need a way to do LDAP queries through a text based interface. I use jXplorer on my own machine but that is a graphical client. Btw, I'm running Ubuntu server 14.04. The background: A server in my ...
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1answer
4k views

rtl8723be Realtek Wifi-Card driver not working on Ubuntu 14.04

I installed Ubuntu 14.04 on my new Lenovo G50-70. The wifi works perfectly in windows, however it behaves strangely on Ubuntu. It is slow, doesn't load heavier sites at all, and after a while, ...
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0answers
107 views

Connect OpenVPN server on Ubuntu Guest VM

Setting up OpenVPN server on Ubuntu Server VM and trying to connect to it from HOST Windows 8 but had no luck. There is no connection. Whats wrong? Everything was did with this tut: ...
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0answers
27 views

Unable to type input to serial command interface

I am trying to communicate with a device with a serial command interface. dmesg shows that: [ 2465.467579] usb 3-1: FTDI USB Serial Device converter now attached to ttyUSB0 ls -pla /dev/ttyUSB* ...
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0answers
248 views

odroid/ubuntu - getting wlan to start

Im working with an 'odroid' fanless PC. The latest OS attempt on it is the stock Ubuntu 14.04 that comes with it. Have made some progress getting the networking (eth0) started but am having issues ...
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0answers
243 views

Get System Serial Number in Linux Machines [closed]

How Can I get System Serial Numbers in Linux Machines ? i prefer to get this through a non root account and dont want to use external commands such as dmidecode or lhal Update I am working on a ...
3
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1answer
109 views

losetup /dev/loop0 disappears after some time

at the moment I do some tests with loop devices on Linux/Ubuntu. In a small test script I have the following commands: #!/bin/sh rm testfile.x dd if=/dev/zero of=testfile.x bs=1M count=1200 losetup ...
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2answers
77 views

How will apt-get handle my manual installed software?

Suppose the Emacs version in the APT repository is 24.3, I configure && make install my own emacs 24.4. After a long time, the software in the APT repository was updated to 24.5. What would ...
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2answers
115 views

Running ubuntu binary on CentOS with all shared libs installed results in ld SIGSEGV

I'm trying to get a binary compiled on Ubuntu to run on CentOS 7 (both 64bit, one host, the other vm). So far I've copied the binary with all the shared libs. I no longer get the missing library ...
1
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1answer
72 views

How do I know if I'm in a jail, container, snapshot, etc. environment? [duplicate]

I received a machine (Ubuntu 12.04 server) from a coworker when he left the company. I created my own user as sudo/admin and used the machine for months via SSH. After rebooting for the first time ...
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0answers
59 views

Ubuntu remote desktop user using a key-based login

I have an Ubuntu 14.04 LTS set up and I have a which authenticates using a private key to connect via PuTTY. Is it possible to use remote desktop from windows 7 (xrdp) with key-based login?
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0answers
34 views

Why libpam-systemd run interactively on apt upgrade, even when specified force-confdef/force-confold

I upgrade my packages using aptitude, specifying the apt options --force-confdef and --force-confold. This generally works, but the package libpam-systemd (204-5ubuntu20.8, on Ubuntu 14.04) still ...
1
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1answer
211 views

Ubuntu runuser command?

I am creating a bash script that requires to run commands as a specific user. As a result I am using the command: runuser I have tested this script and it works perfectly in Ubuntu Server 14.10. ...
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1answer
73 views

Creating users with groups in Ubuntu Server? [closed]

Typically when I create a new user in CentOS / Redhat with the command: useradd user The permissions that it is assigned to the user typically works fine. I believe everything is restricted to its ...
3
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1answer
92 views

Ubuntu user disappeared from machine

Unsolved mystery - I was given a coworker's Ubuntu 12.04.1 LTS machine and set up my own (sudo/admin) user on there from the command line. I switched to my user (from his sudo/admin user) and ...
2
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1answer
94 views

number of open files configuration not operational

Addressing an error of Too many open files I was attempting to follow the suggestions here Although /etc/sysctl.conf fs.file-max = 70000 vm.swappiness = 10 and /etc/security/limits.conf nginx ...
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0answers
41 views

rsyslog and netsnmp support for Linux namespaces

I have configured different net namespaces (netns) on my linux machine (Ubuntu) with different routes in each. Now, if I want rsyslog and SNMP traps (netsnmp) to use one of the route from these ...
1
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1answer
44 views

Accidentally deleted /bin/su

I was working in /bin on my Ubuntu system and ended up deleting su via a typing error while trying to do other editing. So now I have no way of swapping back and forth between users and root. I have ...
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0answers
98 views

Cannot connect PC and Android through bluetooth

I want to create a simple client/server app using bluetooth. I want to use an android as client and a Linux Mint 17 Cinnamon 64 bit as server. I found and adapted this script : import os import ...
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0answers
59 views

How do I get the wallpaper to fit the width of my dual monitor setup in ubuntu?

The wallpaper I'm using doesn't fit the exact dimensions of my monitors combined, so when I set the wallpaper option to span I get black bars on the far right and left with the image centered in the ...
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0answers
67 views

Triple-boot on Windows 7 machine with manual partition table, how to proceed?

I have a Dell Latitude E5440 laptop with Windows 7 64-bit Professional pre-installed on it. My aim is to have Fedora 20 64-bit with a stable kernel and Ubuntu 14.04.1 LTS 64-bit alongside Windows 7. I ...
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0answers
40 views

What is wrong with this upstart script?

I use the following upstart script: description "myjob" # Start up when the system hits any normal runlevel, and # shuts down when the system goes to shutdown or reboot. start on filesystem or ...
1
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2answers
180 views

What to do if you accidentally delete /var/spool/mqueue

Due to a bug in another script, there were 1000's of mails in var/spool/mqueue. I read somewhere that one should delete /var/spool/mqueue to prevent the messages from being sent. Unfortunately, ...
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0answers
38 views

How to read the console output?

In "upstart" you can add the following line to your conf file: console output It seems my script is stopped / waiting. How can I see what has been written to the console. I have access only to the ...
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1answer
35 views

Understanding linux Bridging

I have started learning networking and recently been through bridging in Linux. Bridge in Linux could be set in two ways as far as I have got by reading on internet i.e. either by bridge-utils ...
1
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1answer
382 views

SMBFS Mount suddenly stopped working. CIFS error

When I came in to work today, a mounted drive on our server suddenly had stopped working. In my /etc/fstab I have the following line: //172.22.64.50/Web/ /mnt/netapp smbfs ...
3
votes
1answer
553 views

Fix Skype audio input in Mint 17 Cinnamon

Linux Mint 17 Cinnamon (Ubuntu 14.04) HDA Intel PCH The microphone works well (tested with VLC's capture mode), but Skype won't catch any sound. Only PulseAudio is listed in Skype's configuration as ...
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0answers
20 views

Set default editor for 'info coreutils' [duplicate]

I'm using Ubuntu 14.04 and have this in my .bash_profile: export EDITOR=/usr/bin/vim export VISUAL=/usr/bin/vim man respects this setting but info always opens in something else, nano or it's own ...
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0answers
24 views

API for Ubuntu Linux utility panel

I want to build an application that integrates with the top menu bar on Ubuntu. Where if you click the icon you get a dynamically created drop down menu. Everpad does this and here's an example of ...
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0answers
68 views

How to properly install Apache, MySQL, and PHP on Ubuntu 10.4

I have followed a guide on how to install Apache, MySQL, and PHP on my laptop running Linux (Ubuntu 10.4) It appears I have it installed correctly but when I am not sure. I followed this guide here: ...
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0answers
52 views

Intermittent, temporary freezing

I just got na SSD for my desktop, and decided I'd install Linux on it, for a change from Windows. The problem is, I've tried Ubuntu 14.04 and Fedora 20, and on both, in the install environment and ...
0
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1answer
85 views

Strange bash sytax error depending on sudo usage

I made this bash function to detect if the user running is actually logged in as root user and not using sudo by checking the uid + home directory of the user executing the command: #!/bin/bash set ...