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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-1
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1answer
80 views

How can I get a Low-RAM Ubuntu [closed]

I've seen several complaints that Ubuntu uses twice as much RAM in a fresh install compared to Debian. But it appears that using Ubuntu will make my life much easier due to its more recent versions ...
49
votes
2answers
110k views

Sorting down processes by memory usage

I am able to see the list of all the processes and the memory via ps aux and going through the VSZ and RSS Is there a way to sort down the output of this command by the descending order on RSS ...
1
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0answers
42 views

Ubuntu Linux 12.04 - Load Non-MBR grub from the old grub in MBR

I have installed Ubuntu linux 12.04 on sda10, and grub2 in sda5 . Actually I had a legacy grub installed in MBR, I want to load Ubuntu linux from the old grub. How could I do this? This question ...
0
votes
1answer
3k views

How can I install perf 3.4.25?

By installing perf using sudo apt-get install linux-tools-common sudo apt-get install linux-tools-3.2.0.23 gave me perf version 3.2.14 How can I install perf 3.4.25? Is it related to kernel ...
1
vote
1answer
683 views

Using external hard disk to boot 2 different computers with different hardware

I'm a CS student at my university, so I typically run a version of linux at my home computer when I do programming in C or other linux specific stuff. I really hate grub (it never seems to work for me)...
0
votes
1answer
71 views

Virtualbox export appliance

I have an Ubuntu OS installed using virtualbox. Inside the Ubuntu OS, I have installed QEMU, GCC for ARM and GDB for communicating between ARM and QEMU. My question is, if I export this image using ...
0
votes
1answer
3k views

How to install Kali Linux without CD and flash drive?

I have download Kali Linux. But the size is too large for my flash drive, my flash drive is 1.8gb and the Kali Linux iso is 2.3gb. I use an Asus eeepc 1215p which has no CD/DVD drive. My machine was ...
3
votes
3answers
693 views

ecryptfs mounted via command line, what do I need to backup?

I asked this question on the ecryptfs launchpad, but it expired there without answer. https://answers.launchpad.net/ubuntu/+source/ecryptfs-utils/+question/235226 It might be trivial, but I really ...
36
votes
6answers
41k views

rsync all files of remote machine over SSH without root user?

I have this command to backup a remote machine. The problem is that I need root rights to read and copy all files. I have no root user enabled for security reasons and use sudo the Ubuntu way. Would I ...
1
vote
0answers
466 views

iptables one IP through another network interface

This question is very similar to what I am trying to do: iptables --set-mark - Route diferent ports through different interfaces However I attempted to follow the answer but I was unable to make it ...
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
768 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
939 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
359 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
400 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
757 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
308 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
534 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
801 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
429 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
6k 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
965 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
214 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
869 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
286 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
489 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
116 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
317 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
449 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
725 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
2k 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
321 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
660 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
638 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", ...