Questions tagged [ubuntu-12.04]
Ubuntu 12.04 (aka Precise Pangolin), is the sixteenth release(version) of Ubuntu from Canonical.
791
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Why Virtual Box won't give me option to create 64 bits guests?
My host is x64 bits Windows 8.1.
I downloaded the latest Virtual Box (4.3) and I'm trying to create a VM with a 64 bits Ubuntu OS (ubuntu-12.04.3-desktop-amd64).
When I go to New VM wizard, it doesn'...
48
votes
11
answers
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How to whois new TLDs?
How can I look up new TLDs, such as .email, .guru, etc., using the whois command in linux?
Running whois on a new TLD only gives the response:
No whois server is known for this kind of object.
42
votes
3
answers
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Install public key via ssh-copy-id for other users
ssh-copy-id can be used to install your public key in a remote machine's authorized_keys. Could the same command be used to install other users' public keys, if you have sudo ability?
Update: both ...
37
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7
answers
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How to disable a keyboard key in Linux (Ubuntu)?
my keyboard is damaged, the keyboard key [é] is always pressed and it prevents me from working.
On windows I found the software sharpkey to disable the [é] button but on Ubuntu I can't found no ...
34
votes
3
answers
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How do I reactivate my MDADM RAID5 array?
I've just moved house which involved dismantling my server and re-connecting it. Since doing so, one of my MDADM RAID5 arrays is appearing as inactive:
root@mserver:/tmp# cat /proc/mdstat
...
33
votes
2
answers
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How to tab completion when typing command in tmux?
Some commands (kill-session and kill-server) have the same prefix.
When I type (prefix:kill-seTab), tmux won't give me any result.
Is there a option to show wildmenu for auto-completion inside tmux?
...
26
votes
4
answers
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How to best clone a running system to a new harddisk using rsync?
I have a system running as a server that has a failing harddrive. While all important data is on a RAID and backed up and all that, I don't have an image of the system itself. There is no specific ...
23
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7
answers
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How can I remove the ssh last login info?
Whenever I log into a server using ssh. The prompt gives me "last login" information. I was wondering where this information comes from. How can I remove this record so when someone else log into the ...
23
votes
1
answer
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What means * and ! at second field of /etc/shadow?
As far as I know, the 2nd field of /etc/shadow is the encrypted password of the user.
But some user e.g. daemon user have * in the field, in my environment(Ubuntu 12.04) root have ! in the field.
I ...
18
votes
5
answers
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Ctrl+Alt+T doesn't open a Terminal in Cinnamon 1.6
I just updated to the stable version of Cinnamon 1.6 in Ubuntu 12.04 x64, but I found a bug which just get's me out of my skin.
The key combination CtrlAltT which is supposed to open up the Terminal ...
16
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2
answers
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VirtualBox Ubuntu VM doesn't automatically sync time with host even with Guest Additions installed
I'm running a Ubuntu VM with VirtualBox and I have both the dkms and virtualbox-guest-additions packages installed. I read in this answer that the system clock should sync with the host automatically ...
15
votes
1
answer
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Why is my crontab not running
I have this cron
38 * * * * /bin/bash -l -c 'cd /var/rails/site/releases/20120705144335 && script/rails runner -e qa '\''Play.load_lists'\'''
I have this cron under the a different user so ...
14
votes
1
answer
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WARNING: terminal is not fully functional
I'm using Ubuntu 12.04.1 LTS. But my terminal get to a bit probem sice two or three month ago. You know, when I want to see man page, git diff or something like that, I got a warning and I can't go up ...
12
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3
answers
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Where should I export an environment variable so that all combinations of bash/dash, interactive/non-interactive, login/non-login, will pick it up?
Here's the motivation for the question:
I'm using Ubuntu 12.04 LTS 2 with the Unity desktop. In my .bashrc file, I append several directories to my PATH variable and define a few environment ...
12
votes
2
answers
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Why does the command mv return the message mv: cannot move Device or resource busy on Linux?
I was attempting to move files from one directory to another and was displayed the following message although the files were moved. Why does display the "error" and what does it mean? When does it ...
12
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2
answers
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How do I make Ubuntu start fbterm in the tty on startup?
When I was testing openSUSE about a week ago, I noticed that tty1 (yes, just tty1) had the openSUSE background. I want to do the same in Ubuntu.
I found a way using fbsplash. I'm not too keen on that ...
11
votes
6
answers
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Unicode Composition in Sublime Text
I'm not able to use unicode composition (The ctrl+shift+u method) to enter unicode characters in Sublime Text 2 (v2.0.1, Build 2217) on Ubuntu 12.04 (Unity). To reproduce, just open up a tab and do ...
11
votes
3
answers
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How to uninstall flux on linux?
Flux is a lighting app which malfunctions on my laptop. I tried
sudo apt-get remove flux
in the terminal, but it responds with "the package doesn't exist".
11
votes
3
answers
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How to ssh between a cluster of Vagrant guest VMs
I have 3 Ubuntu 12.04 VMs configured with bridged networking and setup with Vagrant. I can access all of them from the host using "vagrant ssh", but I can't figure out how I connect from one guest VM ...
11
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4
answers
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How to control the height of the title bar in xfce?
How can I control the height of the title bar in xfce?
I only have medium experience with linux desktops, I could change some settings in a text file or install a package, but an instruction that ...
11
votes
1
answer
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Can I "Speed Up" a VM to emulate the passage of time?
I'd like to put a VM into "fast forward" so that I can see several days (or weeks, or months) worth of logs and temp files build up and analyse them.
Is that possible with virtualbox & ubuntu 12....
10
votes
3
answers
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How to install libfaac-dev?
I edited /etc/apt/source.list to have restricted and partner repository, but the results always:
sudo apt-get install libfaac-dev ....
....
E: Unable to locate package libfaac-dev
The package is ...
10
votes
4
answers
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Push entire account from one IMAP server to another IMAP server
My institution recently reshuffled our email accounts. I'm forced to shift years' worth of carefully curated email (= more chaos than a 3 year old's birthday party) from IMAP account_old to IMAP ...
10
votes
1
answer
9k
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How to depend on an upstart job from an init script on Ubuntu 12.04
I am using Ubuntu 12.04 LTS and this system uses primarily upstart jobs. Unfortunately my system also depends on a manually compiled dbmail server, which only has a init script, but no upstart script.
...
10
votes
3
answers
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Why is my .thunderbird folder so big?
I'm using Ubuntu 12.04 and I just found out my .thunderbird folder under my user home directory is 7.4 Gigabytes... However I'm pretty sure I'm using IMAP for all my email accounts, so why is it so ...
10
votes
3
answers
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How to run update-initramfs from bootable usb?
My computer froze during an upgrade from ubuntu 12.04 to 14.04.
This resulted in a kernel panic upon reboot.
/sbin/init: relocation error: /lib/i386-linux-gnu/librt.so.1: symbol__clock_nanosleep,...
10
votes
1
answer
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How to interpret state and log files written by preload program in Linux?
Preload is a program which prefetches files from the disk needed by various applications to reduce application startup time. It seems to be very popular and useful (just google preload+linux) but the ...
9
votes
4
answers
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Running Cronjobs as per Local Time rather than Universal Time
On running
dpkg-reconfigure tzdata
in terminal and i get 2 different time on my machine
Local time is now: Wed May 1 11:58:55 IST 2013.
Universal Time is now: Wed May 1 06:28:55 UTC 2013.
...
9
votes
3
answers
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VirtualBox 4.1.20 (Windows 7 / Ubuntu 12.04 (64 bit)) copy/paste is broken
I can't make copy/paste between Windows and Virtual Ubuntu 12.04 to work with this configuration:
Host: Windows 7 Professional with VirtualBox 4.1.20
Virt: Ubuntu 12.04 (64 bit) with all upgrades/...
8
votes
1
answer
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Using a .vmdk file in VMware player 5.0.1
I am new to VMware player. I downloaded an OS ready for VMware player, which turned up to be a .vmdk.
I am using VMware player 5.0.1 for Ubuntu 12.04 64-bit.
How will I open the file?
8
votes
2
answers
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Writing a CPU/RAM usage log over a period of time to file on Ubuntu 12.04
I am looking for a way to write the CPU utilization into a text file every 10 seconds.
How might I go about setting this up? I'm running Ubuntu 12.04.
8
votes
2
answers
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NVIDIA graphics driver in Ubuntu 12.04
So my overall goal is that I want to be able to code with CUDA enabled applications.
However, upon many days of searching, using installation walkthroughs, and reinstalling countless times after ...
7
votes
1
answer
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Set default terminal in Ubuntu 12.04
I've set the default terminal using sudo update-alternatives --config x-terminal-emulator but every time I press Control + Alt + T, it still opens up gnome-terminal.
I would like to change it to ...
7
votes
1
answer
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Ubuntu: how does cron execute jobs?
I am having trouble finding an answer to this question thorough google:
How exatly does CRON in ubuntu execute jobs?
Does it spawn each new job in its own process?
Say i have two cron jobs:
@...
7
votes
2
answers
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Many USB 3.0 devices on a single Ubuntu via a powered HUB
I tried connecting multiple usb 3.0 enabled devices to my ubuntu 12.04 machine. But found out that at a time not more than 9 devices could be seen connected. I tried monitoring the kernel logs at /var/...
7
votes
2
answers
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What is EXT4-fs error (device md0): ext4_mb_generate_buddy:739: group 10770, 0 clusters in bitmap, 32768?
On my Ubuntu Server 12.04 I got this errors (via dmesg):
[ 1104.544121] EXT4-fs error (device md0): ext4_mb_generate_buddy:739: group 10771, 0 clusters in bitmap, 32768 in gd
[ 1104.549227] EXT4-fs ...
6
votes
2
answers
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Ubuntu PPA for collectd?
I'm looking for a semi-official PPA for recent versions of collectd (5.2+).
There appear to be several possible matches, but I'm hoping to find the "right" one for production use which will keep ...
6
votes
1
answer
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Where can I find the MIB list for my computer (Ubuntu 12.04)?
I want to play around with snmp traps on my computer, but need the MIB list for that (I guess). So where can I find it on a Ubuntu 12.04 system?
6
votes
5
answers
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install ubuntu on my windows 8 laptop
Is it possible to install ubuntu on my windows 8 laptop? dual boot is fine if it is doable
This is my laptop environment.
UPDATE:
I ended with installing vmware player
It works great for me. I have ...
6
votes
1
answer
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Unable to update Google Chrome stable on Ubuntu LTS 12.04
When attempting to run sudo apt-get install google-chrome-stable, I'm presented with the following message
The following packages have unmet dependencies:
google-chrome-stable : Depends: lib32gcc1 (&...
6
votes
2
answers
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noip install on Ubuntu
I'm trying to install noip
on Ubuntu 12.04.4, and I do not know the first thing about building/compiling software.
The README file stated these exact words:
HOW TO BUILD AN EXECUTABLE FOR YOUR ...
6
votes
4
answers
20k
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Wired Connection Suddenly stopped working on ubuntu 12.04 after update
Here is the thing! am on day 5 of no wired internet connection. I have spent the last 4 days searching through every forum and Q&A sites, until i finally decided to post this, so I have done my ...
6
votes
1
answer
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Upgrade from 10.04 to 12.04: apt/aptitude debug information
I have an issue mentioned here: during update from 10.04 to 12.04
The workaround:
apt-get -f install -o APT::Immediate-Configure=false python-minimal
seems to work, but there are two problems with ...
6
votes
3
answers
1k
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How can completely back up my linux computer so that it can be fully restored easily?
I want to be able to blindly back up my entire hard disk, so that I can blindly and automatically restore in case there is any problem.
I am not interested in merely backing up data, but specifically ...
6
votes
1
answer
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Convert GTK RecordMyDesktop OGV video for OpenShot editing
I make some screencasts with my laptop. The software that I use in Ubuntu is GTK RecordMyDesktop which gives me an OGV file.
The quality is perfect and I am happy with it.
For publishing or giving ...
5
votes
2
answers
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rsync slow copy from one disk to another
I got two drives of the same model which are connected using SATA.
When benchmarking read speeds using hdparm -t /dev/sdX, speeds of about 160MB/s are returned. When benchmarking write-speed using dd ...
5
votes
5
answers
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How to connect bluetooth headset via command line on ubuntu 12.04
I want to connect my computer to a bluetooth headset. My computer has ubuntu 12.04 64 bits server operating system with no gui. So I must connect my computer via command line. But at internet ...
5
votes
1
answer
1k
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How can I configure my PC to turn on when it receives power?
How to make a server turn on when it gets mains power?
I have an electricity timer and when it turns on, I want the server to turn on. My BIOS doesn't support the wake up at time function so this is ...
5
votes
3
answers
7k
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Changing ownership without the sudo command
I was setting up a Ubuntu Server and I wanted to allow the FTP client to access the /etc/ folder. So I used the chown command to allow my account to use it. However, this changed the ownership of sudo ...
5
votes
3
answers
2k
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Copying to system clipboard with vim not working under Ubuntu
I have been trying to figure out why when I use "*y or "*x in one terminal window running vim and "*p in another it doesn't paste what I had just copy or cut and just can't figure it out.
I know ...