Category Archives: computer fundamentals

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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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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ARM Development boards and their low-level coding Data-sheets

Low level Arm Processor Development Starting to get to grips with coding on any computer system is not a simple task. At the very start you need to select an appropriate coding language and then choose the best possible learning … Continue reading

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Linux Configuration files and the command shell .

In one of my earlier posts I talked about Linux operating systems training and the Linux Professional Institute Study Guide (LIC-1). This study guide is aimed at helping with taking the following Linux Exams : LPIC-1 Linux Professional Institute Certification … Continue reading

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Linux command shells

Unix and Linux command shells Within the Unix and Linux operating systems , a command shell is an operating system service/application that takes commands from a terminal emulator program or from a script source file and performs any given commands … Continue reading

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Hexadecimal file editors and viewers

In my last post I talked a little about the numeric base systems of (Binary, Octal, Hex-decimal and Decimal) relating them to both computer machine level instruction code and application data. However these mathematical concepts are a little hard to … Continue reading

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Numeric base systems of (Binary, Octal, Hex-decimal and Decimal)

Computer related numeric systems and their written representation In My last post I talked a little about the way computers see both their pre-defined commands in the form of machine code instructions that are grouped into applications by a programmer. … Continue reading

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