Archives For jimingkui

Wifi Security problem in Ubuntu

A user has pointed out on the mailing list that the Wi-Fi passwords in Ubuntu are not encrypted because they are stored in a folder outside of Home, which can be encrypted during the installation of the operating system.

I recently stumbled over the fact, that NetworkManager by default stores Wifi profiles *including clear text passwords* under ‘/etc/NetworkManager/system-connections/’.

I think that is not what one expects when he/she turns on home folder encryption and should because of that be corrected somehow.

If you’re using the default Wi-Fi settings in Ubuntu Linux, open Nautilus file browser with root (Press Alt+F2 -> type gksudo nautilus, hit enter). Then you’ll see list of available Wi-Fi connections under Computer -> etc -> NetworkManager -> system-connections

Ubuntu WIFI clear password

The password is shown as clear text in your Wi-Fi connection file.

A Ubuntu developer has explained that this issue is caused by the fact that the option “All users may connect to this network” is enabled by default. Which means, untick “All users may connect to this network.” under network indicator -> Edit connections -> Select network -> Click edit -> General tab will fix this issue.

Fix Ubuntu Wifi Clear Password issue

softpedia

Device Driver Manager

 

Device Driver Manager is one of Linux Mint application makes it easy to manage open source and proprietary graphics, wireless drivers. Currently Nvidia, ATI, Intel, VIA and Broadcom are supported. It also checks whether or not the PAE kernel can be installed on multi-processor 32-bit systems.

Device Driver Manager Ubuntu

Device Driver Manager Ubuntu

The Device Driver Manager is an independent application, boot the application will scan your system for any available drivers, just select a driver or kernel, DDM will download and install the appropriate packages uses available repositories on your system.

To install this app, download the DEB package from Linux Mint webpage

ubuntu hardware information

Want to check out your system and hardware information? Well, here are two tools that display detailed information about Ubuntu Linux and your computer hardware. They are: HardInfo and I-Nex

I-Nex

UPDATE 2019-1: I-Nex support ends at Ubuntu 17.04! Use Hardinfo instead which is available in Ubuntu Software

I-Nex has a CPU-Z similar interface that displays CPU, GPU, MotherBoard, Audio, Drives, System, Kernel, Memory, Network, USB info in tabs.

I-Nex collects real-time CPU temperature and Memory usage, it also allows to take a screenshot or generate (print) report.

I-Nex cpu information

To install I-Nex, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run commands below one by one to get it from PPA:

sudo add-apt-repository -y ppa:i-nex-development-team/stable

sudo apt-get update

sudo apt-get install i-nex

Works on Ubuntu 14.04, Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.10, Ubuntu 12.04, Ubuntu 10.04 and Linux Mint.

HardInfo:

HardInfo is a system information and benchmark tool available in Ubuntu’s universe repository. It displays a summary of your system information and detailed devices, network, benchmarks. It allows to generate printable reports either in HTML or in plain text formats.

hardinfo ubuntu information

To install this app, just open up Ubuntu Software Center, search for and install hardinfo package.

Facebook client with Emoji support

There’s now a new Linux app which brings Facebook client on your Desktop with emoji support. It’s called Kawaii Emoji Messenger.

Kawaii Emoji Messenger is a multiplatform Facebook client based on the idea of bringing emoji on desktop.
Through Kawaii Emoji Messenger you can use a full set of emoji in you Facebook conversations and comments in the easiest way.

facebook client with emoji support

Facebook does not allow emoji on its web version for browsers. So this app shows you a mobile version of Facebook.

Install Kawaii Emoji Messenger

NOTE: Kawaii Emoji Messenger is currently in its beta stage so you may find it a little unstable and incomplete.

I’ve made this tool into PPA to make it easy to install. The PPA supports Ubuntu 14.04, Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.04, Ubuntu 12.10, Linux Mint and other derivatives.

To install it, press Ctrl+Alt+T on keyboard to open terminal and run commands below one by one:

sudo add-apt-repository ppa:ubuntuhandbook1/apps

sudo apt-get update

sudo apt-get install kawaiiemojimessenger

Once installed, open it from Unity Dash or Menu.

If you’d like to build it from source code, run commands below one by one within the source folder:

mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr ..
make
sudo make install

Kawaii-Emoji-Messenger Home

Boomaga virtual printer

Boomaga is a virtual printer for viewing a document before printing it out using the physical printer and help you get your documents prepared a bit before printing.

The program is very simple to work with. Running any program, click “print” and select “Boomaga” to see in several seconds (CUPS takes some time to respond) the Boomaga window open. If you print out one more document, it gets added to the previous one, and you can also print them out as one.

boomaga virtual printer main window

Regardless of whether your printer supports duplex printing or not, you would be able to easily print on both sides of the sheet. If your printer does not support duplex printing, point this out in the settings, and Booklet would ask you to turn over the pages half way through printing your document.

boomaga printer settings

The program can also help you get your documents prepared a bit before printing. At this stage Boomaga makes it possible to:

  • Paste several documents together.
  • Print several pages on one sheet.
    • 1, 2, 4, 8 pages per sheet
    • Booklet. Folding the sheets in two, you’ll get a book

Install Boomaga in Ubuntu:

The latest version (so far it is 0.3.0) is available in PPA for Ubuntu 13.10 Saucy, Ubuntu 13.04 Raring, Ubuntu 12.10 Quantal, Ubuntu 12.04 Precise, Linux Mint and their derivatives.

To get started installing the app, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run below commands one by one:

sudo add-apt-repository -y ppa:boomaga/ppa

sudo apt-get update

sudo apt-get install boomaga

.

Install PokerTH to play texas hold'em in Ubuntu

PokerTH is a poker game written in C++/QT4. You can play the popular “Texas Hold’em” poker variant against up to 9 computer-opponents or play network and internet games with people all over the world. This poker engine is available for Android, Linux, Windows, and MacOSX.

The latest PokerHT 1.1 has been released recently with following changes.

  • New web-based spectator mode on http://www.pokerth.net/live
  • New option to allow/disallow spectators when creating a game
  • Show list of spectators in the lobby and on the game table
  • Support for WebSocket connections was integrated in the server
  • Show server ping (“application layer ping”) in the client
  • Added option to disable emoticons in the chat
  • Avatars are no longer displayed for players which are on the ignore list
  • New option to “unignore” a player in the context menu
  • BUGFIX: context menu in connected player list was fixed
  • BUGFIX: “display idle players” in the lobby was fixed
  • BUGFIX: No longer beep if ignored player uses nickname in chat
  • translation updates

Install PokerHT via PPA:

This release has been made into Ubuntu 14.04 universe repository, so Trusty users can just install it from Ubuntu Software Center.

For Ubuntu 13.10, Ubuntu 13.04, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run commands below one by one to install from PPA:

sudo add-apt-repository ppa:pkg-games/ppa

sudo apt-get update

sudo apt-get install pokerth

Once installed, open the game from Unity Dash or Menu and enjoy!

Install PokerHT Ubuntu

Install XBMC Ubuntu PPA

XBMC 12.3, the last of the “Frodo” line has been released a few hours ago with various bug fixes. This tutorial shows you how to install or upgrade it in Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.04, Ubuntu 12.10, Linux Mint and their derivatives.

List of fixes in this release:

  • OSX 10.9 Maverick fixes that appeared when it was release
  • update PVR addons
  • several PVR related bugs
  • memory leaks
  • audio channel mapping
  • possible crash on progress dialog
  • and more

See the official announcement for more information.

XBMC 12.3 Ubuntu

Install XBMC in Ubuntu:

This release has been built into PPA for Ubuntu and Linux Mint users. To install it, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run commands below one by one:

sudo add-apt-repository ppa:team-xbmc/ppa

sudo apt-get update

sudo apt-get install xbmc

Once installed, open XBMC from Unity Dash or Menu and enjoy!

Install Smuxi Ubuntu

Smuxi is a free and user-friendly IRC / Twitter / XMPP client inspired by Irssi, available for Linux, Windows and Mac OS X.

Smuxi supports nick colors which are identical across channels and networks, a Caret Mode as seen in Firefox that allows to navigate through the messages using the keyboard, theming with colors and fonts, configurable tray-icon support, optional stripping of colors and formattings and convenience features like CTCP support, channel search and nickname completion. It has a tabbed document interface, tabbed user interface, and support for multiple servers.

Smuxi 0.10 was released recently with new navigation, scripting support and enhanced Twitter. See the release note for details.

Smuxi 0.10 in Ubuntu Gnome Desktop:

smuxi irc client ubuntu gnome

Smuxi 0.10 in Ubuntu Unity Desktop:

smuxi irc ubuntu unity

Install Smuxi via PPA:

Press Ctrl+Alt+T on keyboard to open terminal. When it opens, run commands below to add the PPA:

sudo add-apt-repository ppa:meebey/ppa

Then update package lists:

sudo apt-get update

Install the client:

sudo apt-get install smuxi

install sublime text 3 ubuntu 14.04

This simple tutorial shows you how to install the Sublime Text 3 in Ubuntu 14.04 Trusty LTS via PPA repository.

Sublime Text is a popular text and source code editor somewhat similar to TextMate, available for Windows, Linux, Mac OS X.

The Sublime Text 3 is currently in beta. Webupd8 Team has made an installer script into PPA which automatically downloads the Sublime Text 3 archive from its website and installs it on Ubuntu. The PPA does not host any Sublime Text 3 files.

Install sublime text 3 in ubuntu 14.04

Install Sublime Text 3:

To get started, press Ctrl+Alt+T on your keyboard to open a terminal window. When it opens, copy and paste below command into terminal and hit enter:

sudo add-apt-repository -y ppa:webupd8team/sublime-text-3

Type in your password when prompts and then you’ll get this PPA (Personal Package Archive) into your system.

NOTE: you’ll see nothing when typing passwords in Linux terminal, just type in mind and hit enter to get pass.

install sublime text 3 ubuntu 14.04

After added the PPA, run commands to install the script:

sudo apt-get update; sudo apt-get install -y sublime-text-installer

Once installed, open the editor from Unity Dash or Menu.

To disable new version notifications, add the following to your User Preferences file (Preferences > Settings – User):

“update_check”: false

install latest qmmp ubuntu ppa

Qmmp 0.7.4 (Qt-based Multimedia Player) has been announced a hour ago. This release, the WinAmp-like music player brings Windows support. As well as that, Qmmp 0.7.4 added ffmpeg 2.1 support and various bug fixes.

Changes in Qmmp 0.7.4:

  • added Galician translation
  • added ffmpeg 2.1 support
  • added m3u8 playlist extension
  • improved ReplayGain support
    • fixed 24/32 bit mode
    • added clipping to prevent overflow
  • improved cdaudio plugin
    • added Windows support
    • added track cache
    • fixed proxy support
  • fixed localization of the wildmidi plugin
  • fixed case sensitivity while checking file extensions
  • fixed gcc 4.8 warnings
  • fixed memory leak
  • fixed several Windows-only bugs
  • fixed parsing of the m3u files with backslashes
  • fixed problem with absolute paths
  • fixed adding files from command line under Windows
  • fixed Meta/Win modifier in the global hotkey plugin
  • fixed Japanese translation.

Install Qmmp 0.7.4 in Ubuntu:

To install the latest Qmmp 0.7.4 in Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.10, Ubuntu 12.04, Linux Mint and their derivatives, press Ctrl+Alt+T to open terminal and run commands below one by one:

sudo add-apt-repository ppa:forkotov02/ppa

sudo apt-get update

sudo apt-get install qmmp qmmp-plugin-pack

Once installed, open Qmmp from Menu or Unity Dash:

install latest qmmp ubuntu ppa