Greatest Hits

12
votes
2answers
62k views

What command should I type to run Chrome from the terminal?

I have remote box accessed by VNC and jwm desktop. No menus, not desktop icons, only a terminal window. I have downloaded Chrome's .deb package and installed it. Now how can I run it from the ...
14
votes
1answer
46k views

32-Bit UEFI Boot Support

I recently purchased a Dell Venue 8 Pro. I have read online about what it needs in order to boot into Ubuntu or any other Linux distro. From what I have gathered, what really needs to happen is ...
7
votes
3answers
29k views

permission denied for root@localhost for ssh connection

I just installed Ubuntu 14.04 and LAMP on that. Then, I wanted to configure my server, so tried out This tutorial. When I give the command: ssh root@localhost I get : Permission denied, please try ...
13
votes
2answers
10k views

Unknown Additional Driver: Processor microcode firmware for Intel CPUs for intel-microcode

After upgrading to 15.04, I have one additional driver (it did not appear in 14.10). What is the purpose of this driver and should I enable it?
9
votes
5answers
42k views

How do I get HTML5 h.264 Video working on Firefox?

According the the release notes for Firefox 26, h.264 video should now be working in Linux. It does also say the appropriate gstreamer plug-ins need to be installed. Does anyone know what these are? ...
8
votes
2answers
36k views

Dark GTK theme for Ubuntu 14.04

I am using the zonColor DarkNight theme on Ubuntu 13.10 and am quite pleased with it. I would like to have a similar theme for Ubuntu 14.04 but so far I could not find a single dark theme available. ...
6
votes
1answer
49k views

How to open a port?

I have ubuntu 12.04 and I'm not able to allow certain port in my firewall. So I basically said I will allow everything but it's still not working. Please help. nmap on this machine from other machine ...
11
votes
1answer
37k views

What does apt-get --fix-missing do and when is it useful?

From the man page: -m, --ignore-missing, --fix-missing Ignore missing packages; if packages cannot be retrieved or fail the integrity check after retrieval (corrupted package files), hold back ...
26
votes
3answers
40k views

How to see time stamps in bash history?

Is there any way I can see at what time the commands were executed from the bash history? We can see the order but is there any way I can get the time also? Bottom-Line: Execution time in the Bash ...
4
votes
3answers
37k views

cp - cannot create regular file : permission denied

I want copy to /lib/udev but gives error cp -f /tmp/ok_pcscd_hotplug.sh /lib/udev cp:cannot create regular file /lib/udev/ok_pcscd_hotplug : Permission denied I am root , but I can't understand . ...
3
votes
3answers
11k views

Ubuntu 15.04 doesn't start with nvidia driver

Hello I upgraded from Ubuntu 14.10 to 15.04 and when I use the proprietary Nvidia driver Ubuntu doesn't boot. It shows "Starting 219" on my secondary screen and on my primary screen it shows something ...
5
votes
2answers
35k views

How to install Sopcast Player in Ubuntu 14.04?

I have tried to find some PPA's for Ubuntu 14.04 but didn't find any. So I tried to install the package for previous releases, with no luck and a lot of dependencies issues.
7
votes
4answers
57k views

SSH error: Permission denied, please try again

I am new to ubuntu. Hence please forgive me if the question is too simple. I have a ubuntu server setup using amazon ec2 instance. I need to connect my desktop (which is also a ubuntu machine) to the ...
22
votes
1answer
33k views

java plugin in Chromium

Icedtea-7-plugin installed but it does not appears in the list in about:plugins in Chromium. Not able to execute java applets. Tried installing Icedtea-7-plugin but in vain. Using openjdk7 in 14.04
43
votes
5answers
73k views

Is there a free trusted vmware image with Ubuntu preinstalled?

Since the vmware virtual machine drivers are pretty standard I don't see any technical reason for a preinstalled image not to be portable. Although the above situation is obvious, I didn't find any ...
13
votes
1answer
63k views

How to add a GPG key to the apt sources keyring?

Ubuntu Doc page says this: It is advisable that you add the Opera GPG key. wget -qO - http://deb.opera.com/archive.key | sudo apt-key add - Where do I add that? I want to take the advice ...
19
4
votes
1answer
50k views

Run executable file on terminal

I'm new to Ubuntu and currently on it because of assignment. I would like to ask few questions: 1) How do I make new command to run a shell script? For example, when you type "passwd" on terminal ...
13
votes
3answers
56k views

How can I run Disk Utility in terminal via a comand line?

First of all, I must say that I have successfully used Disk Utility in the past and thus I could rename my partitions. But yesterday, I saw that my partitions are not mounted, so I used Storage ...
57
votes
6answers
10k views

How is 'rm -rf /' able to delete all files in the system?

I haven't tried this command on Ubuntu (for obvious reasons) so I am not sure if Ubuntu will allow its execution. But it's famous for deleting everything. Just out of curiosity, what happens when the ...
13
votes
2answers
27k views

What are the rcuos/rcuob processes I'm seeing in top?

I ran top, and I see lots of rcuos/rcuob processes. Here's a sample of top output: top - 21:41:15 up 22 days, 19:20, 1 user, load average: 0.00, 0.01, 0.05 Tasks: 332 total, 1 running, 331 ...
5
votes
1answer
44k views

How do I install and enable pdo_mysql and gd extensions for php5?

When trying to install webtrees I get the following output: Checking server configuration PHP extension "pdo_mysql" is disabled. You cannot install webtrees until this is enabled. Please ...
24
15
votes
2answers
55k views

update-java-alternatives vs update-alternatives --config java

On Ubuntu 12.04 LTS I have installed Sun's JDK7, Eclipse, and the Arduino IDE. I want the Arduino to use OpenJDK 6 and want Eclipse to use Sun's JDK 7. From my understanding I need to manually ...
23
11
votes
4answers
13k views

How can I use Kernel 3.19 in 14.04 now?

So I'm rebuilding my storage server. For stability, I want to use Ubuntu server 14.04 LTS as the OS. However, I'm planning to use Btrfs with RAID 5, and this has been greatly improved in kernel 3.19. ...
27
votes
4answers
15k views

Why doesn't running “sudo shutdown now” shutdown?

When I issue the following: sudo shutdown now ..my newly commissioned Ubuntu 14.04 server doesn't shutdown. It stops with the following message: * Stopping System V runlevel compatibility Give ...
3
votes
2answers
9k views

Problem booting after updating from Ubuntu 14.10 to 15.04

I just updated my laptop from Ubuntu 14.10 to Ubuntu 15.04. Now on a restart it fails to make it to the login prompt. The system looks to be in a cycle of failure and I see the message repeatedly [ ...
2
votes
5answers
9k views

Cannot Connect To WiFi - Intel Corporation Wireless 3160

I got a new laptop recently and since 14.04 refused to work and 12.04 is a little dated I installed Ubuntu 15.04 Beta 2. Anyways, I've been looking around and cannot find a way to get the wifi to ...
2
votes
1answer
28k views

How to install Flash Player Plugin in Lubuntu?

I am actually using Lubuntu, and I can't install the Abobe Flash Player Plugin with Chromium. When I download it on the Adobe Flash Player website, Lubuntu ask me (in French, sorry, I live in France) ...
5
votes
4answers
20k views

How can KVM be located by Android Studio on Ubuntu 14.04 LTS

When running the emulator, Android Studio reports the following message: Please ensure KVM is properly installed and usable. CPU acceleration status: KVM is not installed on this machine ...
21
votes
1answer
11k views

What is Snappy Ubuntu Core?

Before everyone rushes to mark this as a duplicate, I have indeed read the other threads here and here, googled this, and visited the snappy homepage here searching to clear my confusion, and I ...
17
votes
11answers
40k views

How to clone to a smaller harddisk?

How to clone a harddisk to a smaller sized one. Clonezilla is great but it doesn't support such functionality. Also dd and PartImage don't support this demand. rsync will not copy the MBR since an ...
11
votes
3answers
9k views

How to install cmake 3.2 on ubuntu 14.04?

Default cmake version of 14.04 is 2.8. How can I install cmake 3.2 and replace the default one? Or how can I upgrade 2.8 to 3.2?
2
votes
4answers
14k views

How to Install the Latest Versions of NodeJS and NPM for Ubuntu 14.04 LTS

I noticed over at the https://nodejs.org/ website that node is currently at v 0.12.0. Can someone pls let me know how (terminal commands pls) to install this latest version of node together with npm ...
13
12
votes
4answers
31k views

14.04 doesnt have package imagemagick

Usually I had installed Image Magick on my Ubuntu systems with a command like this sudo apt-get install imagemagick or like this: sudo apt-get install php5-imagick Right now I am running the ...
31
votes
2answers
19k views

How do I install Landscape for personal use?

I'd like to manage my home machines and laptops with Landscape, how can I do this?
3
votes
1answer
36k views

connect: Network is unreachable? - ping

When I attempt to ping google's dns or any outside the network I get connect: Network is unreachable? I can't update either which I put down to this I am new to networking... And Ubuntu. But these ...
1
vote
3answers
17k views

How to install Gnome desktop?

I want to install Gnome desktop in my 64-bit Ubuntu 14.04 I just googled and I found two ways to install Gnome. I also read other answers on askubuntu and googled but can't find what is difference ...
8
votes
2answers
73k views

How to recover a deleted NTFS partition with data

I am on Ubuntu 12.04 64-bits I accidentally deleted a NTFS 255 GB partition using Gparted, and yes it contains LOTS of important data. Upon realizing the deletion I haven't yet created any ...
25
votes
3answers
39k views

How to find and list all the symbolic links created for a particular file?

I had created many symbolic links on various paths for a particular file or a directory. I want the whole list of created symbolic links paths (location). Example: I created symbolic links for ...
6
votes
2answers
38k views

Command to open new terminal window from the current terminal?

I installed xdotool by running sudo apt-get install xdotool and throw xdotool key ctrl+alt+t command to open a new terminal window from the current one.But it was not working. What was the command ...
8
votes
1answer
14k views

14.10: VirtualBox “No suitable module for running kernel found”, Cannot Find Kernel Source

After the 14.10 update to VirtualBox, I can no longer run my boxes. Of note, running sudo service virtualbox status returns VirtualBox kernel module is not loaded and running sudo service virtualbox ...
6
votes
4answers
26k views

Where can I find more Unity themes?

This might already be answered, but I can't find it. I am getting a bit bored of the traditional purple feel of unity and I would like something new. Where can I find more Unity themes? I have ...
10
votes
3answers
33k views

Route all traffic through OpenVPN

Yep, this question has been asked a hundred times, and I have searched everywhere, to no avail. The title says it all really. I have an OpenVPN server (On ubuntu), and I can connect to it through ...
13
votes
1answer
46k views

iptables log file,and how change it

I have this rule in my iptables: iptables -AINPUT -s 192.168.11.0/24 -j LOG My question is: Where is the iptables log file, and how can i change that?
2
votes
5answers
41k views

How to Setup a root cron Job Properly

I tried to setup a root cron job to run a Bash script as root, to run at minute 7,37, every hour, every day of month, every month. This script is located in /usr/bin and named tunlrupdate.sh is used ...
7
4
votes
8answers
9k views

In Ubuntu 15.04 can't do graphical log in

I have done clean install recently of Ubuntu Desktop 15.04. And I was able to log in to the graphical environment until I enabled "boot to text" like said there: How do I disable X at boot time so ...
10
votes
6answers
8k views

problem with docker

I am trying to learn about "Docker" in ubuntu 15.04. When I give any command using docker like "docker run image", it get the following error: FATA[0000] Post ...
14
14
votes
4answers
36k views

How do I check if a package is installed on my server?

I recently installed Ubuntu Server edition 13.10. But I have ran into a bit of problem. At the end of the install, it asks you for several extra packages whether you want them nor not, like openSSH ...
18
votes
6answers
13k views

How do I check whether a module is installed or not in Python?

In terminal, after I start Python, how will I know what are the modules present in python? Suppose I need to learn the modules NumPy and SciPy. How will I install it if it is not installed? How ...
3
votes
2answers
15k views

How to setup virtual users for vsftpd with access to a specific sub directory?

I need to be able to add a virtual users to vsftpd that only have access to a sub folder. The reason why I want to use virtual users is I only want to have 1 real user on the server. The FTP ...
6
votes
2answers
8k views

vivid - failed to connect to upstart: connection refused

Just updated via do-release-upgrade and now certain upstart jobs such as fail2ban and plexmediaserver will not start (have tried reinstalling) sudo service fail2ban start Job for fail2ban.service ...