How do I start Telegram messenger from the command line?
I have tried "telegram", but it's not that.
I have installed Telegram via ppa: ppa:atareao/telegram.
I would like to enable "focus follows mouse" bahavior in LXDE. How can I do it?
I would prefer a command-line solution.
By default, on Ubuntu, rxvt terminal is black on white. How do I change it to white on black?
I'm running Lubuntu 16.04 LTS
How do I install the latest awesome window manager on Ubuntu?
For example,
- Ubuntu 16.04 LTS contains awesome 3.5.6
- Ubuntu 16.10 contains awesome 3.5.9
but the latest release as of now is 4.0.
I have installed Ubuntu 16.04 on a VirtualBox VM. Now every time I boot it, I get two overlay notifications from VirtualBox:
You have the Auto capture keyboard option turned on. This will cause the Virtual Machine to automatically capture the keyboard every time the VM window is activated and make it unavailable to other applications running on your host machine: when the keyboard is captured, all keystrokes (including system ones like Alt-Tab) will be directed to the VM. (...)
and
The Virtual Machine reports that the guest OS supports mouse pointer integration. This means that you do not need to capture the mouse pointer to be able to use it in your guest OS — all mouse actions you perform when the mouse pointer is over the Virtual Machine’s display are directly sent to the guest OS. If the mouse is currently captured, it will be automatically uncaptured.
These overlay notifications persist from the start of boot untill I click ☓ on them.
Can I disable them permanently?
I'm runnung VirtualBox 5.0 on Ubuntu 16.04 (amd64).
Upon installation, I have created an extra partition and mounted it as /data. The partition is visible, but I get a Permission denied error when trying to create a file or directory in it. Doing it with sudo does work.
I am using ext4 filesystem. Ubuntu 14.04 x86_64.
I have tried deleting the partition, then creating it again and setting up fstab to use a new partition. That changed nothing.
How do I make the extra partition behave normally, e.g. be writable by users?
I am doing a fresh install of a minimal Ubuntu system with MATE desktop environment. When I click on NetworkManager's icon and then a wireless network to connect to, I receive a dialog box that says:
Connection failure
Failed to add/activate connection
(32) Insufficient privileges.
I am doing a clean reinstallation of Ubuntu 14.04 with Lubuntu 14.04.1 alternate installer and choose F4 -> "Install a basic command-line system", then install X, MATE and NetworkManager manually like this:
sudo apt-get install software-properties-common -y
sudo apt-add-repository ppa:ubuntu-mate-dev/ppa -y
sudo apt-add-repository ppa:ubuntu-mate-dev/trusty-mate -y
sudo apt-get install xorg mate-core --no-install-recommends -y
sudo apt-get install network-manager network-manager-gnome --no-install-recommends -y
If that helps, when I install Ubuntu that way, it asks for password upon attaching and unmounting a USB flash drive. Also, when I am creating a shortcut for shutdown command, to be able to shut down my computer with a click on an icon, I have to alter permissions for /sbin/shutdown:
chmod u+s /sbin/shutdown
Maybe something similar is going on with Wi-Fi and I need to alter some permissions for it to work properly?
I would like to exclude specific packages from installation with apt-get, that is, install a metapackage without the list of specific packages, preferably with one invocation of apt-get.
For example, in Ubuntu 14.04 LTS command-line, I am installing MATE desktop environment. In 14.04 LTS MATE is not an official flavour, so I'm adding a PPA:
sudo apt-get install software-properties-common # need them for 'apt-add-repository'
sudo apt-add-repository ppa:ubuntu-mate-dev/ppa
sudo apt-add-repository ppa:ubuntu-mate-dev/trusty-mate
sudo apt-get update
then installing:
sudo apt-get install xorg mate-core --no-install-recommends
Even without the recommended extras, mate-core installs 3 terminal emulators: xterm, uxterm and mate-terminal , the latter lacking proper fonts while installed in this minimal configuration.
Suppose I decide that 3 terminal programs would be too many and I'd like to install xorg and mate-core without xterm and mate-terminal. I could do
sudo apt-get install xorg mate-core --no-install-recommends
sudo apt-get purge xterm mate-terminal
but is it possible to do this in one go? Is there some syntax like
sudo apt-get install xorg mate-core --without xterm mate-terminal
As explained in the wiki article LTS Enablement Stacks,
The Ubuntu LTS enablement stacks provide newer kernel and X support for existing LTS releases. These can be installed manually, or are automatically shipped if installing from 12.04.2/14.04.2 and newer release media.
As shown in the chart below, newer hardware enablement stacks become available as 'early preview' (EP) a few months before the next point release.
The note in the chart says
Early preview of the HWE kernel being introduced in the point release will be available in the -updates pocket.
What is the '-updates pocket' and how do I opt in to it and to EP of LTS Enablement Stack?
If this operation is reversible, how do I opt back out?
Here's the details of my current situation, but I would really prefer this to be a broader question, applicable at least to all versions of 12.04 and 14.04.
I'm running a 14.04 LTS, installed and updated from 14.04.0 netinstall (Ubuntu 14.04.2, kernel 3.13) and I'm interested in trying out an Ubuntu 15.04 (vivid) and later kernels as they become available in Early Preview; especially an Ubuntu 16.04 kernel - because the support for older updated LTS enablement stacks ends the moment the new one becomes available, I figure it's good to try newer stacks in EP mode.
Which is the preferred way to install the latest stable version of Mesa on Ubuntu? I believe that would be a PPA, but not the bleeding-edge one like xorg-edgers.
I would like to see a PPA that contains the latest stable release. Right now 10.3 has reached Release Candidate stage and development branched to 10.4, so the latest stable version is 10.2. Soon 10.3 will become the latest stable version and I'd like a PPA that would follow that. For comparison, xorg-edgers contains 10.3.0~git20140821 and oibaf has 10.4~git1408211930.
I would like to install the latest Ubuntu Touch on a 2013 Nexus 7 tablet. Which version should I be looking for: the regular Ubuntu (for ARM platform) or a separate Ubuntu Touch?
I understand that Ubuntu Touch is in frantic development, but I would like to be able to keep track which one is which. I can see the following images:
- Ubuntu 14.09 RTM, daily-preinstalled
- Ubuntu Touch 14.10 (Utopic Unicorn) Daily Build
- Ubuntu 14.10 (Utopic Unicorn) Daily Build, but only i386 and amd64; no ARM. Does it mean that ARM variant has moved to one of the first two links?
Which is the right one to download to run on a Nexus 7 tablet?
I am planning to use Surface Pro 2 with a dock station as my main computer and I would like to connect two external monitors to it, but the dock station only contains a single DisplayPort socket. However, I see that DisplayPort 1.2 specification, approved in 2009, allows for daisy-chaining monitors through its Multi-Stream Transport feature.
How do I tell if I will be able to use two monitors in daisy-chain mode with my computer?
I want to compile my program with the latest version of gcc.
Ubuntu 14.04 comes with gcc 4.8.2, however there's 4.9.0 available, moreover, I see that it is available as a package: gcc-4.9. I tried to install it
sudo apt-get install gcc-4.9
but it says
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'gcc-4.9-base' for regex 'gcc-4.9'
gcc-4.9-base is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Looks like it is already installed, just not as the default one? How do I utilize it to build my program?
I have installed kernel source with
sudo apt-get install linux-source -y
Now, where is the source located?
I'm using GIMP 2.8.
How do I make Tools Options window show up? E.g. I select a Flood Fill tool, and I would like to change Threshold.
How do I convert epub to mobi using Calibre for this?
Every time at boot I get a message “Network service discovery disabled. Your current network has a .local domain, which is not recommended and incompatible with the Avahi network service discovery. The service has been disabled.”
What does this mean for me?
Wi-Fi is disabled.
I used to save images as usual image file formats (jpg, png) by pressing Ctrl+S or Ctrl+Shift+S (Save or Save As dialog). Now in version 2.8 GIMP doesn't allow it anymore: you can Save only as .xcf but to save as .jpg or .png you must Export.
Is there a way to get this old file saving functionality back?
I would like to configure gnome-terminal to start with a bigger window by default. How do I do it?
I have installed GIMP 2.8.4 on Ubuntu 13.04 (via standard repositories). My problem is I don't see Tools window (the one I used to show/hide with the Tab key). How can I make Tools window appear?