Category Archives: Linux

Linux Shell- command history

NB : Please note that this post follows on from Linux Shell command tricks The second of the tools available for the command line interface to a Linux shell is command History, Just like Command and file completion this set … Continue reading

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Linux Shell command tricks – Command completion

The power of the command line in Linux Distributions is still very much at the forefront, many admin task can simply be performed much more efficiently this way. This faster command entry speed, for admin tasks is true even by … Continue reading

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Linux OS and GPIO managment

Please note that this post follows on from : GPIO Part 1 :ARM Development boards and their low-level coding Data-sheets This post is part 2 of A Look at how development boards such as the Raspberry PI allow a developer … Continue reading

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Looking at shells, internal and External commands

This Study area follows on from this Post , Using Linux Shells Each of the available command shells in Linux has two primary types of commands, Internal or External. Internal By saying a command is Internal, these commands are fully … Continue reading

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Using Linux Shells, Command entry and Terminal emulators.

Please note that this post follows on from : The Linux Shell Operating systems such as Linux and Microsoft windows owe their current existence to much earlier versions of themselves with ASCII-code Text based command lines as their only interface … Continue reading

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I/O Addresses and I/O memory

Please note that this post follows on from : IRQ’s and Interrupts I/O Addresses and I/O memory relate to bi-directional Communications between (CPU/Computer to devices ) as opposed to IRQ’s/Interrupt’s which are one way (device to CPU/Computer) communications. Communication via … Continue reading

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Device IRQ’s (interrupt requests) a Definition.

Definition of : IRQ (interrupt request) An IRQ (interrupt request) value is an assigned location in memory where the computer can expect a particular device to interrupt it when the device sends the computer signals about its operation. Note that … Continue reading

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Raspberry Pi GPIO programming

GPIO – Starting from the pins up During the last week of study I have spent a lot of time looking at many online references that relate to Coding for GPIO input and output on the Raspberry PI along with … Continue reading

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Raspberry Pi development projects and GPIO coding

Ever Since the launch in early 2015 of the Raspberry Pi 2 and followed one year later in early 2016 with the Pi 3, the Raspberry PI development board is now with out question a fully usable desktop computer, provided … Continue reading

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Raspberry Pi Sense Hat

Having installed and configured my new Raspberry pi 3 this week, I am ready to start my first project with it. At the same time as I purchased the Pi-3 I also purchased the Raspberry Pi Sense hat, so I … Continue reading

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