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
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2answers
877 views

Can I recover from a system disk error on Ubuntu Linux?

I got a strange looking warning message in Windows Vista about a potential hard disk failure. I say strange because I have never in my life seen that type of warning in Windows. It suggested that I ...
14
votes
4answers
527 views

What specific vulnerabilities am I creating by disabling the sudo password?

Here are some instructions on how to disable your sudo password. These carry the following warning If you disable the sudo password for your account, you will seriously compromise the security of ...
11
votes
3answers
6k views

How do I “merge” two text files?

I recently upgraded from Ubuntu 12.04 to 12.10 and at one point, it encountered an Apache config file conflict in apache2.conf. I didn't give me a merge option at that point, so I just rejected the ...
8
votes
2answers
4k views

Evince fails to start because it cannot read .Xauthority

I'm logged in remotely over SSH with X forwarding to a machine running Ubuntu 10.04 (lucid). Most X11 applications (e.g. xterm, gnome-terminal) work fine. But Evince does not start. It seems unable to ...
7
votes
4answers
8k views

tail -f, but with line numbers

I'm trying to see how many times foo bar appears in /var/log/foo.log within an arbitrary amount of time on a remote server, but nothing that I've tried so far has worked. I've already got a timer ...
6
votes
2answers
8k views

terminal: non-english characters

I used to be able to copy&paste (or type if I load respective keyboard layout) any kind of characters (eg. é ö ñ ß و 好) in my console/terminal. Now I bought a new computer and it does not work ...
4
votes
5answers
451 views

What is a symbolic link made from? Understanding the structure of symlinks

I use Ubuntu 15.10 and I'm very new in Linux. After reading in Wikipedia what is a symbolic link in general, and after executing a symlink creation command in the Ubuntu Unix-bash terminal, I ought to ...
4
votes
2answers
8k views

Invalid signatures when running apt-get update

I'm new to linux and am trying to run an update, I get a lot of "Hit"'s and "Ign"'s but in the end I get these errors, does anybody know what they mean and how I can fix them? W: GPG error: ...
4
votes
4answers
6k views

How to make an Ubuntu time zone change stick?

I'd like to reset the timezone through editing /etc/timezone. However, after I was done editing and saved the file, the system time did not change accordingly. On the other hand, when I take ...
3
votes
3answers
713 views

To secure my data, is it good to have separate data partition (along with separate home partition)

I am installing fresh Ubuntu 15.10 on my laptop after erasing my hard disk completely. Now, what I am interested to know is whether it is good to have a separate data partition along with separate ...
3
votes
2answers
1k views

Do I need a special firewall on a personal computer

I am relatively new to Linux and was wondering about security issues. Most people agree that a virus-scanner is not useful on a linux system, but what about a firewall? I am using Debian wheezy stable ...
3
votes
2answers
27k views

Auto running bash script on login

I wanted to make a script which ran automatically on login so I put it into the file ~/bash.profile, but it didnt run. When I put it in bashrc, it ran on opening a terminal. What I was doing in the ...
3
votes
5answers
8k views

How do I resize a partition in Ubuntu linux without losing data?

I ran out of space in my on the drive only to find that there was another unformatted partition in the system that is available. I now want to resize the current partition to take in the empty ...
2
votes
1answer
3k views

Difference between Ubuntu and Linux Mint

Can someone please tell me the differences between Ubuntu and Linux Mint ? I thought they were almost the same thing until I downloaded Ubuntu 13.10 versions of softwares for my Linux mint 16 ...
2
votes
2answers
6k views

Automount not disabling in Ubuntu 12.04 or 13.04

I'm trying to disable the automounting of any usb device. I have this working in Ubuntu 10.04, but I'm trying to do the same in either 12.04 or (ideally) 13.04 but not having any luck. Everywhere I ...
1
vote
1answer
11k views

How to recover the partition table (Windows, Ubuntu) of an unallocated disc?

The following screenshot shows the current state of my hard disc. The unallocated part of the disc used to contain two operating systems: Windows and Ubuntu, in this order. Windows has been ...
1
vote
1answer
3k views

Install Backtrack 5 r2 into running LUKS setup installed with ubuntu

One Harddisk (sda) Two Partions. With a working ubuntu running. 1) /boot 2) LVM with this virtual volumes/partions/ or whatever they are called inside: Swap Ubuntu Home Prepared for Backtrack Of ...
1
vote
2answers
984 views

restore suse grub

I upgraded my ubuntu and that resulted in its grub loader being used. I have a triboot of windows, ubuntu and suse. I prefer the suse bootloader which I was using before the ubuntu updates. I would ...
0
votes
2answers
3k views

grep: input file 'X' is also the output

I use ubuntu 14.4, and attempt to redirect the output of grep command to a file, but I keep getting this error: grep: input file 'X' is also the output I've searched for this issue and just found ...
5
votes
2answers
8k views

How to configure xorg.conf for widescreen VNC on headless Linux/Ubuntu?

I have a Ubuntu 12.10 Box configured to run headless. I've managed to boot X headless by a lot of trial and error but I still have a glitch: When booting using the monitor, it all works ok, widescreen ...
5
votes
2answers
484 views

Powertop strange results

I have installed Ubuntu 11.04 and battery life decreased by 2 times. Powertop documentation says that there should be 3 wakeups per second, I have 800-900. I think it's very strange because I didn't ...
5
votes
1answer
252 views

equivalent to Ubuntu's apport-bug in Fedora or Mint?

What is the Fedora equivalent to the Ubuntu command apport-bug to submit bug reports? In Ubuntu, one can use: apport-bug <package-name> For example: apport-bug xorg To submit bug reports ...
4
votes
4answers
346 views

Remove a directory from inside using the command line interface [duplicate]

Imaging the next simple file structure within the /home/user/ directory: /home/user |--dir0 |--dir1 |--file1 My current directory is 'dir1' and I remove the ...
4
votes
2answers
9k views

Firmware for wireless card on Ubuntu/Debian?

This is a follow up to my previous question about Debian support for Linksys Wusb600n. I have tried running the Ubunut/Xubuntu LiveCDs and the WiFi does not come up. The Gnome Network Manager menu ...
3
votes
1answer
466 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 ...
3
votes
1answer
7k views

install firefox in ubuntu-server edition

I have ubuntu server edition installed and I want to install firefox inside it , I don't want full ubuntu-desktop package just a minimal setup which would let me run firefox inside ubuntu-server 10.04 ...
3
votes
1answer
1k views

Under Ubuntu, how do I set a static IP for firewire?

I am using Ubuntu 10.10 on my laptop, which connects to our network wirelessly. Since it sits on my desk next to my desktop, I have a private network between the two using a firewire cable, because ...
2
votes
2answers
411 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 ...
2
votes
0answers
217 views

How to access Win7 on a dual boot machine?

I've been dual booting Win7 and Ubuntu for about 4 months and I got on it today to change the default boot on grub, because my girlfriend kept getting locked out when it reboots and, by default, goes ...
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 ...
2
votes
4answers
494 views

Strange file ownership with Ubuntu

Normally we know when we create one file in Linux, the file's owner and group will set with the creator. For example, I have one user, usera, after I execute usera@srv1:$touch 1.txt I will find the ...
2
votes
2answers
901 views

RAM usage doesn't add up? (Free+used < total)

Lately I've been noticing that my monitoring script which reads from /proc/meminfo and /proc/<pid> has been showing odd readings, where several hundred MB seem to be missing. htop is showing the ...
2
votes
4answers
942 views

Update Linux Path permanently [duplicate]

Possible Duplicate: How do I set a user environment variable? (permanently, not session) How can I permanently modify the PATH variable in Ubuntu? Is it possible to do it without modifying ...
2
votes
2answers
1k views

Why won't my X Server won't start as a regular user?

X won't start on my main machine. I can start it as root, but then it only logs me in as root -- I can't use my regular user account. When I start up, it flashes a black screen, then hangs at ...
2
votes
0answers
1k views

power management of USB-enclosed hard drives [closed]

With a typical USB hard drive enclosure, is the full range of drive power management functionality available? edit: moved this into a separate question: In what may be an unrelated matter: is it ...
1
vote
1answer
267 views

Massive disk corruption on Ubuntu 15.10 with dm-crypt + LUKS full disk encryption?

I suspect there's a bug in Ubuntu's default whole disk encryption setup. Here's what happens, repeatably: I make a fresh install, Ubuntu 15.10 with whole disk encryption, overwriting the whole disk ...
1
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0answers
199 views

How to fix the error warning failed to connect to lvmetad no such file or directory falling back to internal scanning in ubuntu 15.10

I need help with my Ubuntu laptop which was working fine until recently. My desktop disappeared and all the desktop icons are gone. All I have access to is the terminal. In an attempt to fix the ...
1
vote
1answer
2k views

Backup and Restore list of installed packages and APT sources

I commonly reinstall Ubuntu and back up my APT stuff [sources, keys and installed package lists] using the tutorial at http://askubuntu.com/a/99151/371765. However I commonly also remove software such ...
1
vote
1answer
108 views

Owner of directory set to 518?

I recently installed some PHP site on a server for a customer. A guy calls me up and tells me he can't seem to upload to the img directory. I went in and took a look at the owner of said directory. ...
1
vote
2answers
2k views

Why does Ubuntu use Debian “unstable”? How does it manage to be stable then?

Shouldn't Ubuntu use Debian "stable" for stability? How does it manage to stay stable by using Debian "unstable" ?
1
vote
0answers
532 views

Error while burning DVD

I'm working on Ubuntu 13.04. I purchased a few DVDs of Sony company from a few different shops but it failed to burn all these. Earlier I had used the Sony DVD only to burn the same date & it ...
1
vote
1answer
1k views

Adding Objective C compiler to GCC 4.7.2

I finished building the GCC 4.7.2 with C, C++ and Go compilers on my Ubuntu 12.04. I now want to add the Objective C compiler, is it possible to add it to the previous build? If so, how should i ...
1
vote
2answers
340 views

Prevent GRUB from showing up by default?

Whenever I boot on Ubuntu, I see the entire GRUB menu by default. Is there a way I could make it simply auto-boot if uninterrupted within X seconds? I remember that this was the case on previous ...
1
vote
1answer
823 views

Why does “xdg-open” fail although “xdg-mime query defaut ” succeeds on Ubuntu 10.10?

On Ubuntu 10.10, xdg-open fails to open the file and give me the error: No application is registered as handling this file But xdg-mime query defaut ... succeeds for the mime type. Why? Here is ...
0
votes
0answers
36 views

How can we verify the Debian software and the download mirrors which provide it are safe? [on hold]

How can we verify or test if the Debian software and the download mirrors which provide it are secure, safe, and unmodified? Related: How is the authenticity of Debian packages guaranteed?
0
votes
1answer
71 views

How to regain access to the lost user , linux3 , of two side by side Ubuntu 16.04 instances?

Three days ago, I tried installing the second of two Ubuntu Linux 16.04 versions side by side on the same Lenovo Thinkstation desktop using the procedure described in this URL, ...
0
votes
1answer
796 views

Accessing file from the Windows host in a VirtualBox virtual machine

I am running Ubuntu 14.04 as the guest operating system in a VirtualBox virtual machine. The host runs Windows 8 (24GB). I want to access a folder of the host inside the guest. Since the source is ...
0
votes
2answers
8k views

Problem Windows 8.1 Ubuntu 14.04 dual boot

I installed Ubuntu 14.04 on a computer that has Windows 8.1 preinstalled, following the next link http://itsfoss.com/install-ubuntu-1404-dual-boot-mode-windows-8-81-uefi/ Now I can not dual boot. ...
0
votes
2answers
955 views

Issue with bad sectors on a laptop hard drive

I had Windows installed on my laptop and suddenly one morning Windows couldn't start. Then I tried after formatting and for once it became possible. I also installed Ubuntu as logical drive (deleted ...
0
votes
1answer
451 views

Simple jail for user with open-ssh [duplicate]

Possible Duplicate: Restricting an SSH/SCP/SFTP user to a directory Can I confine my users to their /home/%u directory using simply open-ssh configuration? I did the following from what I ...