Tuesday, November 24, 2015

Install KDevelop on Ubuntu 15.10, using Ubuntu Software Center

KDevelop is an easy to use integrated development environment for KDE. It supports a wide range of programming languages and features project management, an advanced editor, a class browser and an integrated debugger.

The application wizard can generate fully functional projects for terminal programs and GUI programs using Qt, KDE or GNOME.


It can be installed using Ubuntu Software Center.

Hello World KDevelop

Sunday, October 25, 2015

Get screen resolution using command line

To get screen resolution using command line, for Ubuntu Linux:
$ xdpyinfo  | grep dimensions


$ xrandr -q

How to prevent dialog "Enter password for keyring Default keyring to unlock" always pop-up

To prevent the dialog "Enter password for keyring 'Default keyring' to unlock" always pop-up, you can assign a blank password to keyring.

Be careful - 
By choosing to use a blank password, your stored passwords will not be safely encrypted. They will be accessible by anyone with access to your files.

Run Setting - Passwords and Keys

Right click "Default keyring" and "Change Password"

Enter old password

Leave blank in new password

Monday, March 30, 2015

nproc - check the number of processing units available

The Linux command nproc print the number of processing units available to the current process, which may be less than the number of online processors.

Dump detailed CPU information with cpuid

cpuid dump detailed information about the CPU(s) gathered from the CPUID instruction,
and also determine the exact model of CPU(s).

To install cpuid:
$ sudo apt-get install cpuid

Saturday, March 7, 2015

iwconfig - Linux command to configure a wireless network interface

Iwconfig  is  similar  to ifconfig(8), but is dedicated to the wireless interfaces. It is used to set the parameters of the  network  interface which  are  specific  to the wireless operation (for example : the fre‐quency).  Iwconfig may also be used to display  those  parameters,  and the wireless statistics (extracted from /proc/net/wireless).

All  these  parameters and statistics are device dependent. Each driver will provide only some of them depending on hardware support,  and  the range of values may change. Please refer to the man page of each device for details.

Wednesday, September 10, 2014

Free software, free society: Richard Stallman at TEDxGeneva 2014

It is the first TEDx talk of the founder of Free Software movement. Stallman, RMS for short, has changed the world with his vision of freedom for the digital age. He launched the GNU operating system, used with Linux as a component, and inspired the development of Creative Commons licences and Wikipedia project. In this talk, Stallman describes how nonfree programs give companies control of their users and what users can do in order to recover control over their computing.