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Continue reading →: Downloading Multiple Files Via Wget (Linux)When I first started my website I discussed some of the options of using the command line / terminal to download content from the internet without using a web browser. Recently I started looking through some of my partially wrote blog posts / ideas for posts and decided to finish…
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Continue reading →: Copying Files & Folders Via SCP (Linux)I’m working on a few projects at the moment and using SCP. I thought I had covered SCP in a post before, but my site’s search engine says otherwise. So here is a post on SCP. Secure Copy (SCP) can be used, as the name suggests, to securely copy files…
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Continue reading →: dstat – Viewing Linux Under The Hood (Linux)dstat is a tool for viewing resource use in Linux, it can be used to bench mark a system at rest and then run again to show the impact a particular piece of software may be having. Installing dstat I am using Raspbian and installed dstat using sudo apt install…
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Continue reading →: Raspberry Pi MicroSD Check Using Agnostics via CLI (Raspberry Pi)Towards the beginning of March 2020 raspberrypi.org released a tool to check the speed of a microSD card being used by the Raspberry Pi. The details for this tool, called “agnostics” can be found at https://www.raspberrypi.org/blog/sd-card-speed-test/ or if you want to install the tool then use sudo apt install agnostics…
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Continue reading →: Viewing All Users Cron Tabs / Cron Jobs (Linux)I have looked at cron before, but what if someone else has gained access to your Linux system and added a cron job without your knowledge? Linux systems such as Raspbian store the crontabs as files (named for each user). A user’s crontab can be found under the /var/spool/cron/crontabs directory.…
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Continue reading →: TCPDump (Raspberry Pi)What is tcpdump? TCP (Transmission Control Protocol) is a communication standard that devices use to talk establish communications between each other. The communication then takes place in packets. Normally a lot of the communication between devices is hidden away from us humans as we don’t need to see our computer…
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Continue reading →: Ansible In A Docker ContainerAnsible and Docker are both powerful tools and in this blog post I aim to look at putting Ansible in a Docker container. I’m building on the work of https://hub.docker.com/r/philm/ansible_playbook/dockerfile/ Run Commands: docker run -v “$(pwd)”:/ansible/playbooks geektechstuff/ansible_container:latest playbook.yml -i inventory_file_name Switches: -v maps a directory into the container (in above…
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Continue reading →: Registers / General Purpose Registers (GPR)More of a personal post as I get to grips with Registers / General Purpose Registers (GPR) and start making notes. The 8 GPR have existed since the 8-bit Intel x86 processor, and they can be viewed using a debugged such as GDB. After the 16-bit era, the 32-bit era…
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Continue reading →: Royal Mail Video Game StampsWhilst growing up I had (and still have) many geeky hobbies, but one I never got into was stamp collecting. Recently though I saw some stamps and decided to visit Royal Mail’s special stamp site (https://shop.royalmail.com/special-stamp-issues) to pick them up as a gift. They’ve arrived and, as a geek and…
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Continue reading →: Brute Force Caesar Cipher V2 (Python)Around a month ago I used Python to brute force the Caesar Cipher (I blogged about it here: https://geektechstuff.com/2019/12/22/brute-force-caesar-cipher-python/). My original solution outputted a solution for each possible cipher shift, which worked ok for small text samples but for larger texts started to take up a large portion of the…



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