How To Check Your Own Open Ports in Ubuntu / Debian

Netstat is available by dafault in your system.

Open a Terminal

$  sudo netstat -plunt

or

$  sudo netstat -nat

How to get Previous commands quickly in Ubuntu / Debian Linux

How to get Previous commands quickly in Ubuntu / Debian Linux

1.   You can use the up arrow to view the previous command 
2.   Type !! and press enter for the previous command
3.   Type !-1 and press enter for the previous command    
4.   Press Control+P will also display the previous command

How to Disable Bash History Temporarily in Ubunu / Debian Linux

How to Disable Bash History Temporarily in Ubunu / Debian Linux


 Some times we want to use password as command line argument. Storing your password in .bash_history file  is not a good idea.

use the following command

$  unset HISTFILE


it is only for current session. 

How to install Drupal 7 in Beaglebone Black

How to Install Drupal 7 in Beaglebone black

Drupal is an Open source Content Management Platform for powering your website. It is written in PHP. you need Apache2, PHP and mysql for Installing Drupal.  Now the POSTCARD sized Linux powered Beaglebone Black can use as your Drupal Webserver. See a tutorial here

How to Control Servo Motors from Beaglebone Black

How to Control Servo Motors from Beaglebone Black

Lot of DIY projects are using Servo Motors. Controlling of Servo Motors are very easy compared to other Motors. Here You can see How to control a Servo Motor using Beaglebone Black PWM pins. (Link)