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
0answers
31 views

Cannot Remove (Unmount) Server Share (NFS) from Mount List [duplicate]

Note on Duplicate - This has been marked as a duplicate quite a few times, so can someone link me to a solution which works for me? Because everything I've tried in all the other posts I've found, ...
5
votes
1answer
3k views

chrome freezes Ubuntu 13.04

Since about 2 to 3 weeks ago, my Ubuntu 13.04 desktop frequently freezes after I am using Chrome for a while. The mouse is movable, but nothing respond to mouse or keyboard. I have to push the power ...
1
vote
1answer
776 views

How do I diagnose problems docker deployments (dokku/git push)?

I'm new to Docker and dokku, and DigitalOcean, and just trying to figure out how all the pieces fit together. I'm deploying my app with git. When I deploy, it seems to succeed from my end, but when ...
2
votes
1answer
3k views

How to fix unreliable Realtek Wireless card on Ubuntu 13.04

I have a Realtek RTL8188CE wireless card and it works fine when I have a strong signal, but if I get even slightly away from the wifi I lose connectivity even though there is a strong Rx signal. I ...
3
votes
2answers
949 views

remote desktop connection - similar to team viewer

I have a few different Desktop versions of Ubuntus (13.04, 12.04, Kubuntu,..) on different computers. I would like to manage all of them on a single computer via remote connection and be able to use ...
2
votes
1answer
370 views

Mark packets between machines (client and router)?

Can I mark a packet on the client's OUTPUT chain and add an iproute policy on the router to route them via a specific gateway? This what I tried to do, but it isn't working. My client's mangle table ...
4
votes
1answer
1k views

How can I secure my Ubuntu 13.04 to prevent network attacks? [closed]

Is there a way I could protect my pc computer from being hacked in an event where the internet conection will be opened? Thing is I am going to Campus Party Colombia 2013 and I was sugested to format ...
1
vote
2answers
4k views

Disk problems prevent me from booting, or set the disk to read-only. How do I fix the disk?

Problem: Since about one week ago, my Ubuntu system encounters various severe and strange problems. Sometimes the whole system suddenly freezes. I have to push the power button to shut down the ...
1
vote
1answer
848 views

XBMCbuntu freezes at random intervals

I have a Gateway GM5474 which is running XBMCbuntu on a 500GB Hard drive (the originial I believe or maybe slightly newer hard drive). Little background: The system is still stock, and I was having ...
15
votes
5answers
10k views

How is sudo set to not change $HOME in Ubuntu and how to disable this behavior?

On Ubuntu 12.04, when I sudo -s the $HOME variable is not changed, so if my regular user is regularuser, the situation goes like this: $ cd $ pwd /home/regularuser $ sudo -s # cd # pwd /home/...
10
votes
2answers
19k views

rsync is very slow (factor 8 to 10) compared to cp on copying files from nfs-share to local dir

I have a freshly installed Ubuntu-server which is ought to be the new backup-server for our VM-storage. The server has 4 nics, 2 of them 10Gbit (in fact an intel x540-T2 with the newest driver ...
4
votes
2answers
2k views

Why are there both, an Upstart script and an init.d script, for several daemons? [closed]

I am running Ubuntu 12.04.3 LTS and installed several services like Samba, DHCP server, ... I receive the following warning when I run "halt now", "telinit 6" or similar: Since the script you are ...
6
votes
1answer
5k views

Execute custom script when an interface gets connected

I using a USB wifi dongle to connect to the Internet. When the wireless connection dies, I lose some iproute rules too. How can I reset these rules when the interface connected again?
3
votes
2answers
7k views

How to check which hypervisor is used from my VM? [duplicate]

So I'm running a VM somewhere and want to know what hypervisor the host is running. Any way to check whether it's running KVM or in a container? The vm is running Ubuntu
2
votes
1answer
2k views

Cron does not print to syslog

I have following crontab file - # /etc/crontab: system-wide crontab # Unlike any other crontab you don't have to run the `crontab' # command to install the new version when you edit this file # and ...
1
vote
1answer
405 views

Accessing a VPN from Ubuntu 12.04

I am trying to access my schools VPN but it isn't working. I haven't used it in awhile but I followed the same procedure and it isn't working. I installed Cisco's Anytime Connect, I configured the ...
2
votes
2answers
788 views

How to use -d in ntfsundelete?

As far as I can tell from the manpage of ntfsundelete getting a file back is done with e.g. ntfsundelete /dev/sdb3 -u -m important.txt which would undelete the file in-place. If I don't want in-...
4
votes
1answer
310 views

What utilities do I need to begin android development on Ubuntu?

I already would work by some Cortex-A boards(for instance Cubieboard, Marsboard,...) I've already started working with integrated circuits: Cubieboard Marsboard I've been directed to learn linux, ...
2
votes
0answers
544 views

exit code of grep in trap where the script is launched by upstart service

Recently I encountered a problem in ubuntu upstart and trap in Bash shell. I use ubuntu 12.04. The upstart script(/etc/init/player.conf) is: start on (local-filesystems and runlevel [2345]) stop on ...
0
votes
1answer
12k views

E: Some index files failed to download. They have been ignored…” when tunning “sudo aptitude update”?

This is what the end of output after I run sudo apt-get update on Ubuntu 12.04: Ign http://apt.typesafe.com unicorn/main Translation-en 35% [Working]W: Failed to fetch http://ppa.launchpad.net/...
1
vote
1answer
816 views

Broadcast port to other computers after SSH reverse tunnelling

I have been reading on how to reverse tunnel and I am using this command: ssh -f -N -T -R25565:localhost:25565 dns.mindfulhacker.tk To forward my Minecraft server. My other server can connect to my ...
2
votes
1answer
434 views

vsFTPd Browser no Listing

I'm trying to access my ftp server through the browser but I am facing an issue. If I access it using Filezilla, I can see the directories fine. However using a browser I get no directory listing as ...
3
votes
5answers
7k views

Curl with ipv6 not working by default

I am trying to curl ipv6 addresses, but without success. If I try lets say: curl https://google.com I wait for a timeout and get network unreachable If I force ipv4, everything is fine. ...
2
votes
1answer
977 views

Since Ubuntu persistent USB crashed, it fails to boot with black screen pre-login, what to do?

I'm using a persistent live USB version of Ubuntu 13.04. Recently it crashed while I was using it. When I restarted I couldn't get past the Ubuntu logo with the sequentially flashing dots anymore. ...
0
votes
1answer
216 views

Ubuntu 13..04 reinstall Unity and gnome3

I remove unity and gnome 3 in my Ubuntu. I am using now just mate desktop. But I would like to restore Unity and Gnome3. So I tried this re-install solution, but now i get: The following information ...
1
vote
1answer
873 views

How to install SUMO on Ubuntu 10.10

I want to install SUMO on Ubuntu 10.10: I followed sumo installation guidelines step by step: I installed packages necessary to build SUMO, I created a symbolic link libgdal.so . I decompressed the ...
3
votes
2answers
5k views

kernel panic Hardware Error - what hardware is responsible?

I'm having kernel panics every other day. below is a transcript of a photo of the console. How do I determine what hardware is responsible for the problem? (or is it software) Ubuntu 12.04 LTS ...
1
vote
2answers
1k views

Removing Linux from a dual-boot setup. How to recover Windows bootloader or keep GRUB?

I recently discovered that running a Linux virtual machine is both cheap (RAM/CPU-wise) and easy; it seems like there's absolutely no need to have a dual-boot Windows/Linux machine (if this is not ...
1
vote
0answers
293 views

Tmux hidden input at command line

I've just started using tmux recently, and have run into this problem a few times. Whatever I type on the command line, is hidden from view until I press enter and it is executed. I don't know how I ...
3
votes
0answers
506 views

Remmina doesn't work with keyboard when connected remotely

In order to bypass firewall/GPO constraint, I want to use Ubuntu as springboard to rdp to a Windows box on the same LAN remotely. I can xrdp to ubuntu via sesman-Xvnc module. I can run remmina from ...
2
votes
2answers
96 views

How to schedule initial configuration of a system after cloning?

I want to setup a big amount of servers using cloning. After the initial image was applied, I want to run a configuration script. The cloning will be done through hard disk replication by the hardware ...
0
votes
2answers
117 views

Why does this command work for logging script output?

This command does not store the output of my script in the log file: . myscript.sh | tee -a log_file.log However this next command does store the output in the log file. . myscript.sh 2>&1 |...
1
vote
1answer
318 views

OpenVZ bridged networked adapters won't work from sample configs

I've made a copy of the basic config and added the line: NETIF="ifname=eth0,bridge=br0" When I create a new machine and enter it I can't make the network adapter work yet creating an instance from ...
0
votes
2answers
451 views

how os running in virtualbox effect original os speed in laptop [closed]

Suppose I want to run ubuntu on virtual box.. how it effect original windows in terms of speed ?? like we used ram for ubuntu can not be used for windows like that??
1
vote
0answers
735 views

ubuntu winboot wubildr.mbr missing

I have installed Ubuntu 12.04 (64 bit) operating system, It supports uefi so I installed it like a normal dual booting Now(not like wubi), when I try to load Windows8 it works fine. But when I try to ...
3
votes
2answers
3k views

Kernel freezes on loading ramdisk. How to find out what's wrong?

I'm using an Ubuntu Server (13.04) Minimal installation (with the Xubuntu Metapackage as a desktop environment, if that matters) on x86_64 on my Samsung notebook. I'm currently forced to use the no-...
2
votes
0answers
323 views

Webmin alternative that installs & runs on the client machine & communicate via SSH

Are there any Webmin alternatives that don't consume server resources but instead install on client machine & communicate via SSH client. So effectively all the actions made on that GUI are ...
4
votes
1answer
674 views

NetworkManager connection sharing doesn't seem to NAT packets

After setting up network sharing the easy way on the Ubuntu machine, and getting an IP address via DHCP on the Arch Linux machine downstream, the Arch machine is able to ssh to the Ubuntu machine and ...
6
votes
1answer
1k views

Security of an encrypted (dm-crypt & LUKS) Ubuntu 12.04 installed by somebody else?

Suppose I want an Ubuntu setup (let it be 12.04) with full disk encryption. Ubuntu offers this as an option during installation. Suppose also that I have somebody (e.g. my vendor) else set this up ...
2
votes
1answer
658 views

Why doesn't my udev rule work?

I created a file /etc/udev/rules.d/60.alsa.rules with the following content: KERNEL=="0000:00:1b.0", SUBSYSTEM=="pci", ATTR{label}=="Realtek High Definition Audio Device", ATTR{vendor}=="0x8086", ...
0
votes
1answer
6k views

Can't mount external USB driver - on Ubuntu 12.04

When I plug in external usb driver I saw next prompt: Error mounting: mount exited with exit code 1: helper failed with: Unprivileged user can not mount NTFS block devices using the external FUSE ...
2
votes
1answer
899 views

Ubuntu 12.10 - setup a user, when ssh login gives me /etc/bash.bashrc: Permission denied

I setup a user on my Ubuntu 12.10 server named "deploy" and I believe i added the user to the sudoers properly. However, whenever I SSH into the server with this user, I get: -bash: /etc/bash.bashrc:...
4
votes
3answers
4k views

Ways to update Ubuntu (debian-based distros) offline

What is the easiest way to update/upgrade an offline Ubuntu machine with the help of a Windows machine that has internet access? This question also applies to installing new packages offline and not ...
3
votes
2answers
35k views

sendmail error dsn=5.0.0, stat=Service unavailable

i have configured an sendmail configuration in ubuntu 12.04 64 bit machine when i'm send th email through a perl script it gives the below error dsn=5.0.0, stat=Service unavailable and mail is not ...
0
votes
2answers
1k views

Ubuntu is running slow

I'm not sure since when it became slow, but I think after I did apt-get update. Here's my machine details: I can see from the system monitor that the CPU is working hard specially when I run Chrome ...
3
votes
1answer
957 views

Compile the Ubuntu “Raring” Kernel with the Intel Compiler

Of course, the first question is: why I'm doing this. Just for fun! I'm learning more about Linux kernels and I have a virtual machine that I can replace in 15 minutes. Getting to business, I don't ...
1
vote
1answer
165 views

eee pc 1025c shows black screen after booting on Ubuntu 10.04 [closed]

eee pc 1025c shows black screen after booting on Ubuntu 10.04 It does work in recovery mode, but not in default mode
2
votes
0answers
184 views

Possible to limit number of cups printers?

The way I have configured CUPS on my workstation is by echo 'CUPS_SERVER=cups.example.com' >> ~/.profile echo 'export CUPS_SERVER' >> ~/.profile When I open the print menu in any ...
2
votes
1answer
724 views

How can I access a shared folder from R on Ubuntu to a 2nd Ubuntu machine using Samba?

I have two machines running Ubuntu 12.04 LTS with Samba installed. I have access to myshared folder as expected. However, when setting in R the path smb://mymachine1/mysharedfolder to read a file it ...
1
vote
2answers
238 views

Change chkconfig used by Centos 6.3 to print “on” in bright green (like Ubuntu's chkconfig)?

chkconfig on Ubuntu will highlight services that are on in green when using list mode. http://i.stack.imgur.com/Jx1jW.png This does not occur on CentOS 6.3. I'd like that highlighting on the CentOS ...