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.

learn more… | top users | synonyms (1)

9
votes
5answers
12k views

Can't apply chmod to a file

I have a file on my HDD, cd /media/celebisait/5AC69788C6976355 There is my file called myFile.tar.gz. I do als -l, -rw------- 2 celebisait celebisait 1387745311 Jun 6 2013 myFile.tar.gz ...
2
votes
0answers
211 views

VPS freezes every few days (rcu_sched_state detected stall on CPU x)

Background: I have an Ubuntu 12.04 (64bit) in Xen virtualization environment. 1 GB RAM, 1 processor. Every few days I get the following error message: rcu_sched_state detected stall on cpu 0 ...
2
votes
1answer
661 views

Decrypt second encrypted LVM during headless server boot?

I've followed this question https://unix.stackexchange.com/questions/5017/ssh-to-decrypt-encrypted-lvm-during-headless-server-boot and successfully remotely decrypted my root drive. However, I have a ...
3
votes
1answer
1k views

PHPStorm changes group when saving file

When editing a file with PHPStorm, the group is changed from www-data to my local user. I've added my local user to the www-data group, and if I edit the file with gedit/vim/etc. the group stays as ...
6
votes
3answers
3k views

Send command to detached screen and get the output

I've been searching to find a way to send a command to a detached screen session. So far, so good. This is what I've come up with: $ screen -S test -p 0 -X stuff 'command\n' This command works as ...
1
vote
1answer
2k views

OpenSSH hangs after login without showing login prompt

I ran across an issue with ssh after fresh Ubuntu 13.10 installation on Lenovo T420. I tried git pull (which failed) and this led me to more general ssh failing. After spending some 2-3 hrs of ...
2
votes
1answer
351 views

Difference between .changes and .dsc files? [manually updating package]

What is the difference between .changes and .dsc file? Debian Policy says about required field set, but misses the essence and the meaning on the whole. Why have two (actually there are three) when ...
0
votes
0answers
3k views

Installation of Canon Laserjet LBP 2900B Printer drivers in Linux Mint-16-Cinnamon-64 bit

Respected and experienced folks, A bit of research on the net tells me to "install" Synaptic Package Manager from the Ubuntu Software Center to the above mentioned Linux Mint version! If it helps, ...
7
votes
4answers
3k 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 ...
-3
votes
3answers
503 views

Configure eth1 to stop using dhcp [closed]

How do I configure eth1 (via terminal commands) to stop using DHCP. That is, if I had the ability to use the GUI, I would select the MANUAL setting.
0
votes
1answer
5k views

Ubuntu: how do you swap eth0 and eth1? (Ubuntu 13.10 server in a VirtualBox VM)

I installed Ubuntu 13.10 server (64-bit) in a VirtualBox 4.3.6 VM (Windows host) with one NAT adapter assigned. The only non-default software selected during installation was OpenSSH. So far so ...
0
votes
0answers
25 views

How to restore desktop configs after an intallation

I have recently installed PgAdminIII and Geany via Ubuntu Software Center, but this changed my desktop configurations. It no longer looks like it did. I am using Pinguy OS 12.10 based on Ubuntu ...
1
vote
0answers
104 views

Linux Source Routing with one gateway

I've a Linux box which have IP 10.1.1.100/24 on eth0 with gateway 10.1.1.1 and as well as 20.1.1.1 on eth0:1 and 20.1.1.2 on eth0:2 . Is there any way that I could communicate to a remote machine ...
2
votes
1answer
1k views

How to properly setup web server directory permissions

I'm lost with this, hopefully I can find some help here: I have Ubuntu 12.04 LTS webserver. For example I have user "myuser". There is a public directory which is my web root. I chowned it and all ...
2
votes
1answer
3k views

mei 0000:00:16.0: init hw failure

When I boot up I get the following errors: mei 0000:00:16.0: init hw failure. mei 0000:00:16.0: initialization failed. (they don't prevent the bootup, I'm just curious as to what they are and if ...
3
votes
2answers
472 views

How do I disable the left CTRL on Ubuntu 13.10?

How do I disable the left CTRL on Ubuntu 13.10? Actually I can do it already. All I need to run is xmodmap -e "keycode 37 = " The problem I have is this only works if I run it from the terminal ...
1
vote
2answers
501 views

Battery full notification

I am using a Linux distribution, I didn't get any notification even after the battery is full. Is there any custom script to run battery charge status and output a sound notification when the ...
4
votes
2answers
3k views

Reasons for rsync NOT transfering all files?

Does anyone know common reasons for such a large deficit difference in the number of files transfered when backing up my LARGE home directory using rsync on a ubuntu 10.04 LTS setup.. machine is ...
10
votes
3answers
4k views

l, ls & la — what are the differences, and are there more of these commands?

So, through typing several commands I've found that there's not only ls, but l and la too. There doesn't appear to be any man entries on Ubuntu 12.14. They all appear to do similar things with minor ...
5
votes
2answers
333 views

How to control the time that users spend on

I need a solution that allows me to control the time that each user spend on the computer, excluding idle time (some kind of parental control). I've tried timekpr, but it doesn't work on Ubuntu 13.10. ...
3
votes
1answer
289 views

Installing openssh-server after Rescue Disk boot

I tried to help a friend with hard drive boot problems. I first asked her to make a rescue disk (Ubuntu 12.04.3), and boot from it. Then I asked her to open a console (Alt+F1) and use sudo to become ...
0
votes
0answers
248 views

error when apt-get install nfs-kernel-server

I'm now using the command sudo apt-get install nfs-kernel-server to make my Ubuntu 12.04.2 LTS server support NFS. But it reports this error: Need to get 559 kB of archives. After this operation, ...
2
votes
1answer
3k views

Can't login to Root User

I just installed Ubuntu 13.10 on VMware. I am trying to login to root from my user account using su command but unable to login as Terminal is saying the following : su: Authentication Failed
3
votes
1answer
138 views

Mail delivery problems

Once upon a time there was a server. Lets call it zzz.com, running Ubuntu LTS 10. Then, domain owner decided to create his corporate mail via Google Apps, and created account username@zzz.com. ...
0
votes
2answers
4k views

Samba shares - Cannot access with users

I have installed a Samba server on Ubuntu Server 12.04 so I can store files there from my desktop or laptop or whatever. /etc/samba/smb.conf: #======================= Global Settings ...
1
vote
2answers
1k views

How do I mount my encrypted private home directory if I forgot the password?

On Ubuntu 12.04, how can I access encrypted private home directory? I forgot my root password at some point and my root home folder is locked. I am now using another account in root group so can I get ...
1
vote
3answers
11k views

How to start teamspeak 3 on boot, ubuntu server 12.04

So I'm quite new to linux but I'm starting to understand it. I have a Ubuntu Server 12.04 system, fresh install, and I installed a teamspeak 3 server on it: $ sudo useradd teamspeak (provided user ...
0
votes
1answer
792 views

Install Arch Linux alongside Ubuntu 12.04

I have a windows 8.1 on which I installed Ubuntu 12.04 (dual OS). Now I also want to install Arch Linux alongside windows and ubuntu. Please tell me the how to do this on Ubuntu. I have a gparted ...
2
votes
1answer
197 views

Does my VM need to be on the same LAN IP range to ping?

I have a home LAN where all internal IP addresses are in the rang 192.169.0.0-254. However, on one of those computers I have setup a CentOS VM, which currently seems to be set to 10.0.2.1. So the VM ...
3
votes
1answer
213 views

Limiting download speed based on other LAN traffic

I'm kind of new to Linux (but learning) so bare with me if I say something stupid :P. I'm currently running an Ubuntu fileserver which automates a whole bunch of downloading tasks. At present it is ...
1
vote
3answers
117 views

Setting up traffic router (proxy ?) for production

I am running a production server and my web application is running at port 8099. so if front end wants to access any backend endpoint, they make a call to this url: ...
2
votes
1answer
47 views

'which' reports one thing, actual command is another [duplicate]

I am running Ubuntu 12.04, which came with Cmake v 2.8.7. I had need for a more current CMake, so I downloaded the source for 12.8.12.1, built, and installed it per directions. The last step, make ...
2
votes
1answer
31 views

ubuntu groups not returning all my groups

when I run groups in ubuntu without my username delliott@delliott:/var/www$ groups delliott wheel it returns two groups I'm in. when I do delliott@delliott:/var/www$ groups delliott delliott ...
1
vote
0answers
182 views

NFS File Sync on Mount

I have an ext4 hard drive mounted and working correctly except, if I add a file/folder to the mount on the server side, I can't see the changes on the client side unless I reboot the client. i.e. The ...
1
vote
0answers
92 views

prefork doesn't appear to be listening to MaxClients in config file

Apologies in advance if this is a stupid question, I'm new to all of this! I have prefork installed on a ubuntu server which I confirmed by running aptitude search apache2-mpm- Which gave me p ...
0
votes
3answers
100 views

How to catch hold of Linux basics [closed]

I am a windows user and I really want to learn how to use Linux. I know little bit of programming and networking concepts if that helps. I want to learn everything from scratch. Like what command ...
1
vote
1answer
2k views

One ubuntu machine in LAN cannot access internet

I have 4 ubuntu machines connected in a LAN network by a single switch.Their IP address is from 192.168.10.10-192.168.10.13.But after I restarted one of them since disk problem,I find that this ...
0
votes
0answers
84 views

Non destructive installation : Ubuntu 13.10 -> Debian 7.2

How to make a non destructive installation of Debian 7.2 over Ubuntu 13.10 ?
1
vote
5answers
6k views

Is there some default password for a new user in Linux?

I am a Windows user gradually moving towards Linux. In Windows we have an option of either having or not having some password for a user. Once we do not put a password we can directly log in to the ...
2
votes
1answer
2k views

How do I change file/directory permission of a nfs mounted directory, so I access files as user?

On a Ubuntu computer I mounted a directory from another computer using the following line in the fstab: 12.34.56.78:/space/Images /mnt/space/images nfs rsize=16384,wsize=16384,rw,auto,nolock 0 0 ...
0
votes
2answers
620 views

How to turn off/speed up desktop switching in Ubuntu 13.10?

In my standard Ubuntu desktop I defined four workspaces. When I switch between them (e.g. use a key shortcut), I see the new workspace move in while the old workspace moves out of the screen. So far ...
1
vote
1answer
1k views

The other users: avahi, root, syslog, messagebus,, nobody, ntp, rtkit and whoopsie

What are all these other users (found them with top) when running Ubuntu: avahi, root, syslog, messagebus, nobody, ntp, rtkit and whoopsie. I am aware that whoopsie, for example, is for reporting ...
2
votes
1answer
1k views

Which library files are needed to run a binary with an alternate libc version?

I built Firefox 26 on Mint 16 because the Ubuntu 10.04 build utilities are too old to build it. It does need to run on 10.04, however, since that's the target OS I'm building for. It built and runs ...
0
votes
2answers
61 views

Help with directory ownership/permissions for apache

I've been using Ubuntu Linux for a couple years now but I still have trouble with permissions. I need to setup my web server for production. The root web directory should always be accessible by ...
0
votes
1answer
4k views

Drive auto mounting as read only (errors=remount-ro) [closed]

My system (12.04 Ubuntu LTS) is auto-mounting as read only and I have no idea why. Output of fstab: cat /etc/fstab # /etc/fstab: static file system information. # # Use 'blkid' to print the ...
4
votes
3answers
234 views

Tool to create recipe to preseed partitioning

I want to preseed an Ubuntu 12.04 installer using a custom partitioning recipe. My disk layout is reasonably complex, and so is the recipe syntax itself. Hand-crafting such a recipe seems tedious and ...
8
votes
3answers
446 views

What could cause the clock to jump by 5 minutes?

I have a (physical) box running a stripped down Ubuntu; every now and then (6 times in 3 months), the clock jumps backwards by exactly 300 seconds (+- 0.01 seconds; always exactly 300 seconds). It ...
1
vote
1answer
290 views

How to install latest catfish in ubuntu 10.04

I was trying to install the latest catfish from https://launchpad.net/catfish-search/+download on my Ubuntu 10.04 (need this version at the moment, nothing more recent) The version in apt-get for ...
1
vote
0answers
53 views

Xephyr Resolution Issue

Whenever I try to connect to Ubuntu using Xephyr, I always get it with the resolution set to 1600x1200, even though, I specified the switch -screen 1024x768 when running it. Questions Where is the ...
0
votes
1answer
1k views

qemu emulator for raspberry

I am trying to emulate a raspberry pi on ubuntu. I have tried several ways using several tutorials but every time, the emulator logs this: scsi: 0:0:0:0 ABORT operation started scsi: 0:0:0:0 ...