Greatest Hits

21
votes
3answers
89k views

Switching Between GUI and Terminal

I am new to linux. I am planning on setting up a server and although I like the regular Ubuntu desktop I like the Lubuntu one a little more especially for my file server needs. What I want to know ...
21
votes
1answer
103k 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 ...
33
16
votes
6answers
29k views

“Welcome to emergency mode!” Think it is a fsck problem

journalctl -xb snippet (what i think is wrong, it was at least in red): -- Unit systemd-fsckd.service has begun starting up. juli 09 15:40:16 kim-SSD-Sationary systemd-fsck[414]: /dev/sdb1 contains a ...
3
votes
2answers
80k views

Copying file from folder 1 to folder 2 in terminal

I am trying to move a text file from folder 1 to folder 2 via terminal. I'm doing this for a school project to show what actually happens when you copy paste. I'm doing cp/home/rits/desktop/folder1 ...
12
votes
3answers
25k views

How can I update my gnome to gnome 3.18?

I'm using Gnome 15.04 currently.
12
votes
4answers
100k 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 ...
43
votes
5answers
86k views

Ubuntu as Miracast Sender/receiver

couldn't find anything about Ubuntu act as a Miracast receiver or sender. General info about Miracast at Wikipedia Should this work? Supported HW? (Wifi direct?) only via WiFi no LAN? If Wifi direct ...
18
votes
2answers
76k 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 ...
19
votes
1answer
122k views

How do I boot into recovery mode?

I recently tried booting into the Grub2's menu entry "Ubuntu GNU/Linux, with Linux 3.2.0-24-generic-pae (Recovery Mode) just to see what was there. It booted successfully, but I had no idea what to ...
40
6
votes
4answers
61k views

“/usr/bin/ld: cannot find -lcudart”

I am newbie to Ubuntu and using Ubuntu 14.04 64-bit. I want to make a project that uses cuda and opencv I got the following error when running cmake . && make Linking CXX executable ...
18
votes
1answer
69k views

chown recursively changed permissions

I ran the chown command in a directory: chown -R user:user {.,}* The {.,}* is used with mv and cp to include both hidden and listed files. Now this command went through and changed those two files ...
19
18
votes
2answers
54k views

How to install libpng and zlib

I'm completely new to Ubuntu. I got installed it because my school uses a lot of Linux type stuff in my school's Computer Science program so I figured I would use Ubuntu on my own machine and just do ...
47
9
votes
1answer
27k views

How to sync OneDrive on Ubuntu 14.04?

I am using Ubuntu 14.04. How can I sync my OneDrive account on Ubuntu 14.04? I know that OneDrive is a Microsoft cloud storage service and that Linux is not supported. But there is a a tool called "...
24
votes
11answers
74k 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 ...
53
votes
3answers
68k views

What is the “t” letter in the output of “ls -ld /tmp”?

When running the command ls -ld /tmp, the output would be: drwxrwxrwt 30 root root 20480 Mar 11 14:17 /tmp So I have two main questions: What is the letter t after the permissions? As far as I ...
22
votes
6answers
39k views

How could I list all super users?

I want a command to list all users who have root privileges i.e. sudo ? Suppose I'm a sudoer user. How could I know all other sudoer users?
6
votes
3answers
9k views

Arc Theme on Ubuntu 16.04 looks weird

I just installed Arc theme on Ubuntu 16.04 using version for ubuntu 15.10 (that's what's available on creator's website: http://software.opensuse.org/download.html?project=home%3AHorst3180&package=...
1
vote
3answers
9k views

Solved ! Grub Installation Failed Ubuntu 16.04 fresh Installation, Unable to Boot form USB

I was trying to fresh install Ubuntu 16.04 on DELL 3521, Previously i was using 15.04. System was getting slow so i wanted to install fresh, I deleted the /, /boot, /swap and recreated. There are ...
12
votes
1answer
90k views

Command to change the wallpaper in XUbuntu

Doing a google search reveals the command xfconf-query -c xfce4-desktop -p /backdrop/screen0/monitor0/image-path -s <image-path> The first time I run this command I got a message saying that ...
11
votes
5answers
125k views

How do I start VNC Server on boot?

How do I create a system-wide autostart file? This would be on a cloud server running the desktop version of Maverick. I logged in as root and created an autostart file using System/Preferences/...
17
votes
4answers
61k 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 ...
4
votes
2answers
35k views

UEFI or Legacy? Which is advised and why?

While I know some facts about UEFI and Legacy and basic differences between them, like UEFI allowing for faster booting (I've checked this question already, but it doesn't answer mine), I have a bit ...
5
votes
2answers
94k views

Change permissions on all folders and files

I have ubuntu 12.04. I want to change permissions on all folders and files at the same time so that anyone can modify or remove them.
9
votes
6answers
8k views

After Upgrade from 14.04 to 16.04 login screen runs in a loop while console login works

I am on a DELL Precision 5510 Ubuntu Edition with Ubuntu 14.04 as default installation. Today I upgraded from 14.04. to 16.04 as shown here The upgrade went without any error messages. However, after ...
15
votes
3answers
67k 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 ...
37
votes
2answers
55k 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 ...
14
votes
5answers
94k views

How to install subversion client in ubuntu

I have looked at this question: How do I install svn? We already use sudo apt-get install subversion to install subversion on the server. What should I do in order to install the subversion ...
1
vote
5answers
47k views

How I can install “Internet Download Manager” on Ubuntu 14.04?

How I can install Internet Download Manager on Ubuntu 14.04 ? anyone help me
36
15
votes
6answers
8k views

No more AnyConnect compatible vpn transport in Ubuntu 16.04?

Following my previous experiences with setting up Cisco AnyConnect VPN connections on Ubuntu 14.04 I tried the same approach here by installing packages: sudo apt-get install -y network-manager-...
11
votes
1answer
8k views

Ubuntu 16.04 LTS cannot suspend / fails on suspending

I have recently upgraded my desktop to Ubuntu 16.04. I had one problem with it before, which was that the Unity Launcher and status bar were missing. I solved this with this page. However, when I try ...
1
vote
2answers
16k views

How do I remove PHP 7 Completely?

I have upgraded PHP old version to latest php7 but unable to start its services. systemctl restart apache2.service Job for apache2.service failed. See "systemctl status apache2.service" and "...
35
7
votes
3answers
8k views

How can I install OpenJDK on Ubuntu 16.04?

Since I upgraded to the latest version of Ubuntu, I cannot install the Java OpenJDK package needed to compile Android custom ROMs. When I run sudo apt-get install openjdk-7-jdk, the following error ...
22
votes
8answers
53k views

How to compare two files

So basically what I want to do is compare two file by line by column 2. How could I accomplish this? File_1.txt: User1 US User2 US User3 US File_2.txt: User1 US User2 US User3 NG Output_File: ...
2
votes
3answers
9k views

How to use xrdp with Unity on Ubuntu 16.04 LTS?

I'd like to remotely connect to an Ubuntu 16.04 LTS system over xrdp using the Unity desktop environment. I have a 14.04 LTS system that I configured to use Xfce for xrdp connections, but I prefer ...
21
votes
1answer
43k views

L2TP IPsec VPN client on Ubuntu 14.10

I need to connect to a L2TP IPsec VPN using Ubuntu 14.10. I previously used L2TP IPsec VPN Manager 1.0.9 from Werner Jaeger in Ubuntu 14.04, and it worked great, but that no longer appears to be ...
33
6
votes
6answers
8k views

How to remove the Unity Amazon package in 16.04?

I was able to go to the ubuntu software center before and remove it and now it doesn't show up since the switch to the gnome software store. Trying the terminal method of removing the shopping lens ...
29
votes
3answers
70k 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 ~/...
12
votes
4answers
7k views

Ubuntu 16.04 final not booting from stick: gfxboot.c32: not a COM32R image

The brand new 16.04 final does not boot from USB stick: Missing parameter in configuration file. Keyword: path gfxboot.c32: not a COM32R image boot : I made a boot stick with Startup Disk Creator ...
2
votes
1answer
8k views

Install gnome classic on Ubuntu 16.04

I have installed Ubuntu 16.04 and it works fine but I want to install gnome classic fallback, do anyone know how?
7
votes
2answers
8k views

Can I use 14.04 MongoDB Packages with 16.04?

Unfortunately the official Ubuntu package for MongoDB is still stuck on 2.6, which is ancient at this point (this bug didn't get picked up for vivid, wily or xenial). MongoDB has not yet released a ...
5
votes
1answer
23k views

Ubuntu/Debian on a Lenovo Ideapad 100s — Linux has issues with this laptop

I picked up an Ideapad 100s and have been trying to install Ubuntu on it. So far I have been unsuccessful to boot the Ubuntu installer. That machine comes with windows 10, uses UEFI and its setup only ...
17
votes
4answers
108k views

How to detect and configure an output with xrandr?

I have a DELL U2410 monitor connected to a Compaq 100B desktop equipped with an integrated AMD/ATI graphics card (AMD E-350). The installed O/S is Ubuntu 10.04 LTS. The computer is connected to the ...
23
4
votes
2answers
66k views

Reinstalling Ubuntu via Terminal

I've currently encountered some issues with ubuntu causing me to be stuck in tty mode. I already tried fixing the issue but since I'm not sure of what really happened for this issue to occur I now ...
28
votes
4answers
21k views

No version of Ubuntu can be installed with any Skylake 6th generation Intel processor

Ubuntu can't be installed on my system because of what the title says. This is because support Intel HD Graphics 530 was only just added in Linux kernel 4.3 and all versions of Ubuntu only have kernel ...
6
votes
2answers
31k views

Remote desktop setup on Ubuntu 15.04

I installed Ubuntu 15.04 in Eucalyptus cloud environment . Now I'd like to setup remote desktop connection from Windows Laptop to linux (Ubuntu 15.04). What is a best solution for that ? I tried ...
7
votes
3answers
25k views

How can the Telnet service on Ubuntu Server 14.04 LTS be enabled?

How can I enable the Telnet service on Ubuntu Server 14.04 LTS? Can somebody include a detailed description about the needed packages and configurations?
9
votes
2answers
7k views

16.04 LTS vs 16.04.1 upgrade

What's going on? I am told that if I want to upgrade (from 14.04 LTS) I should have that "Let me know of new LTS versions" checkbox checked (which I do) in my software updates settings. However, if ...
11
5
votes
1answer
8k views

Is my AMD hybrid-graphics card supported by Ubuntu 16.04 driver?

so before I try a clean install of 16.04 LTS when it's released, is there any way to find out whether my AMD graphics card is fully supported by the driver? I'm not talking gaming, just the open ...
6
votes
3answers
27k views

Syntax error near unexpected token `('

When I use below code in Ubuntu terminal, it works fine: rm !(*.sh) -rf But if I place the same line code in a shell script (clean.sh) and run the shell script from terminal, it throws an error: ...
1
vote
2answers
8k views

Dual boot windows 10 ubuntu 16.04

Long story short , i inserted a windows 10 bootable USB deleted all partitions previously were installed , did this in command prompt : diskpart select disk 0 clean then installed a windows 10 on ...