Some dpkg useful commands

Below are some useful parameters that can be used with dpkg to work with .deb packages.

$ sudo dpkg –get-selections Lists all installed packages $ sudo dpkg -l true* Lists all packages starting with true $ sudo dpkg -L truecrypt Lists all files installed by truecrypt $ sudo dpkg -i timeout.deb Install the timeout.deb package . . . → Read More: Some dpkg useful commands

How to monitor battery, network, CPU in Windows

Linux has an application called gkrellm. It displays battery, network, CPU usage, system temperature, disk usage etc on the desktop. Gkrellm is configurable and can run on system startup too. Gkrellm comes with most distributions. There is a Windows version too, but it is outdated as of now.

A good substitute that exactly does what . . . → Read More: How to monitor battery, network, CPU in Windows

Add repository to sources.list file in Ubuntu

Here is an example of how to add a sources.list file to the Ubuntu packages repository. Open a terminal window and enter the commands below.

$ sudo cp -p /etc/apt/sources.list /etc/apt/sources.list_backup <enter> $ sudo vi /etc/apt/sources.list <enter> Now add the line: deb http://ppa.launchpad.net/speed-dreams/ppa/ubuntu raring main <enter> :wq $ sudo apt-get update <enter>

Now you can . . . → Read More: Add repository to sources.list file in Ubuntu

Udacity, a great site for education courses in Computer Programming

If you wish to learn more about Computer Programming or any information technology subjects, do try out http://www.udacity.com. Courses are available for free without instructor support and at a nominal fee with instructor support. Udacity courses can also be viewed on any Android device by installing the Udacity App from the Google Play Store.

. . . → Read More: Udacity, a great site for education courses in Computer Programming

Error Couldn’t open DVD device: /dev/dvd (No such file or directory)

Below error appears when creating a avi out of a DVD, is an mencoder error: MEncoder 1.1-4.8 (C) 2000-2012 MPlayer Team libdvdread: Can’t stat /dev/dvd No such file or directory libdvdread: Could not open /dev/dvd Couldn’t open DVD device: /dev/dvd (No such file or directory) No stream found to handle url dvd://2 Cannot open file/device.

. . . → Read More: Error Couldn’t open DVD device: /dev/dvd (No such file or directory)

Where did ffmpeg on Ubuntu 14.04 LTS go? Use avconv instead

ffmpeg was replaced by libav on the new Ubuntu package list. It is similar, though. ffmpeg -> avconv ffplay -> avplay ffserver -> avserver

You can still convert media files using avconv in place of ffmpeg.

To install avconv, open a terminal window and type following commands: $ sudo apt-get install libav-tools <enter>

. . . → Read More: Where did ffmpeg on Ubuntu 14.04 LTS go? Use avconv instead

How to create a second address book in Evolution and isolate the contacts from the Primary Address Book

I manage a office address book of about 300 members. I use Evolution on Linux as the primary email client. The problem was that I did not want to combine the names and addresses of the members of the club with those in my Personal Address Book. One solution is to use Groups, but still . . . → Read More: How to create a second address book in Evolution and isolate the contacts from the Primary Address Book

Android Office Apps (WPS Office, Google Write, Polaris Office, MS Office 365)

Have been trying to get the right Office Suite for my Android phone. Here are the best from the Google Play Store and a stand out issue with them, for you to decide which is good for you.

MS Office 365 Microsoft has announced that their Office Suite will be free for all users on . . . → Read More: Android Office Apps (WPS Office, Google Write, Polaris Office, MS Office 365)

Install 32 bit libraries on Ubuntu 14.04 LTS

Sometimes, you may want to run 32 bit applications on Ubuntu 14.04 LTS 64 bit Operating System. To do that, earlier ia32-libs had to be installed. But since 14.04 LTS, the following must be installed instead. To install, open a terminal window and type the command below: $ sudo apt-get install lib32z1 lib32ncurses5 lib32bz2-1.0 lib32stdc++6 . . . → Read More: Install 32 bit libraries on Ubuntu 14.04 LTS

Window Builder Pro hangs in Eclipse Luna on Ubuntu 14.04 LTS

If you use Eclipse IDE for Java development, you will find that there is a great GUI builder from Google, and it worked very well on previous releases of Ubuntu.

Unfortunately, Eclipse just freezes when you use Windows Builder on 64 bit Ubuntu 14.04 LTS. Several posts on the Internet suggest installing Oracle Java 7 . . . → Read More: Window Builder Pro hangs in Eclipse Luna on Ubuntu 14.04 LTS

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