Archive for September, 2014

September 2, 2014

What is a Raspberry Pi?

by Prashant Kumar Sharma

The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse. It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python. It’s capable of doing everything you’d expect a desktop computer to do, from browsing the internet and playing high-definition video, to making spreadsheets, word-processing, and playing games.

read more »

Advertisements
September 2, 2014

Linux cheatsheet

by Prashant Kumar Sharma

# cheat_sheet.org.sh
# The contents of this file are released under the GNU General Public License.

Feel free to reuse the contents of this work, as long as the resultant works give proper attribution and

are made publicly available under the GNU General Public License.
# Best viewed in emacs org-mode.
# Alternately, one can keep this cheat sheet handy by adding the following line to ~/.bashrc:
#
# alias cheatsheet=”less ~/path_to_cheat_sheet.org.sh”

* Reference:
** Basics:
*** Getting help:

# View the manual for target command
man command

# Get help with a target command (probably the same as above, but not always):
command -h

read more »

September 2, 2014

How To Reset A Forgotten Raspberry Pi Password

by Prashant Kumar Sharma

I’ve got a Raspberry Pi running in my garage as part of a security system. It’s been running for so many months that I forgot the password so I was unable to access it via SSH.

Luckily there is was a technique that I could use to reset the password and get it back up and running. You need physical access to the SD card, a separate PC and the ability to connect your Pi to a monitor and keyboard. I used a Windows PC but this should work fine on a Mac or Linux machine.

 

Step 1 – Grab The SD Card

Power down the Pi and remove the SD card. Insert it into your PC.
Step 2 – Edit cmdline.txt

read more »

September 2, 2014

Raspberry Pi Model B+ 3.5mm Audio/Video Jack

by Prashant Kumar Sharma

The Model B+ features a new 3.5mm audio jack which also includes the composite video signal. This has allowed for the removal of the composite video socket found on the Model B.

The new jack is a 4-pole socket which carries both audio and video signals and is often found on other multimedia devices such as iPods, MP3 players and smartphones.

Raspberry Pi Model B+

read more »

Tags: ,