August 7, 2021
Running a Python Script on Boot with Systemd
This short blog post details how you can run a python script on boot using systemd.
Category: Informational
April 24, 2021
Making a fully packaged Jarfile with all dependencies with gradle
This blog post talks about how you can create a fully packaged jarfile including all its gradle dependencies.
March 13, 2021
Python Psutil and the differences between free and available memory
In this blog post I am talking about the difference between free and available memory in the psutil python module.
March 6, 2021
The Risks of Windows and Linux Line endings in Git with PoGoAPI
This talks about the minor changes needed for the api_hashes api to allow verifying API’s.
February 6, 2021
Fixing Raspberry Pi MySQL Access Denied for user root with non root user
This blog post talks about how you can log in as root to your MySQL database with a non-root user on your Raspberry Pi.
January 30, 2021
How to install a MySQL Server on a Raspberry Pi
This blog post explains the steps you need to perform to install a MySQL server on a Raspberry Pi.
January 23, 2021
PyPi .pypirc file location on Windows
This blog post describes where you should put your PyPi .pypirc file on windows and what it typically wants to include.
January 2, 2021
Advent of Code 2020 Review
Today I am talking about the Advent of Code 2020 and what I have learnt doing it this year.
September 12, 2020
Using Virtualbox Shared Folder on Ubuntu 20.04
This post explains how you can configure Virtualbox Shared Folders for Ubuntu 20.04.
August 29, 2020
Install Virtualbox Guest Additions on Ubuntu 20.04
This post describes how you can install Virtualbox Guest Additions on Ubuntu 20.04.
June 20, 2020
Fixing “fork failed: Resource temporarily unavailable” on Linux
This blog post talks about how you can fix the error “fork failed: Resource temporarily unavailable” on Linux.
May 16, 2020
How to use an API to Download a Google Docs Sheets Spreadsheet as CSV
This blog talks about how you can use a little known Google Docs Sheets API to download spreadsheets as a CSV.
May 9, 2020
Installing Windows Services using NSSM
This post talks about how you can quickly and easily create Windows services with NSSM.
May 2, 2020
How to create a new database with influx db
This is a short post detailing the command you can use to create a new Influx DB database
March 20, 2020
Unblocking Minecraft Server port 25565 on Fedora
This post describes how you can unblock port 25565 to allow Minecraft Server traffic through in the Fedora firewall.
March 14, 2020
How to install TeamCity as a Service on Windows
Today I have written a small note on how to install the Jetbrains TeamCity service on windows.
February 29, 2020
How to remove TeamCity as a Service on Windows
Today I am leaving a note on how to remove the Jetbrains TeamCity service on Windows.
February 1, 2020
Starting a SSH Agent with Cygwin
This post includes a quick snippet to start a SSH agent using Cygwin under Windows.
December 14, 2019
I’m Participating in Advent of Code 2019
This post talks about my participation in the Advent of Code competition 2019.
July 20, 2019
MagicDuel – A different sort of game
Today I have written a short piece about a game I play and program for from time to time, MagicDuel.
June 22, 2019
How to remove a MySQL Service in Windows
This post details the command to remove a MySQL Service in Windows.
June 15, 2019
Exporting Points of Interest from Ingress
This blog post talks about how you can export portal data from Ingress using browser addons.
June 8, 2019
New Site LBPoGo.co.uk
This blog post talks about a small new site I have set up for the Leighton Buzzard Pokemon Go Group, LBPoGo.co.uk .
May 18, 2019
How to get Linux user information from a User ID
This blog post talks about how you can get user information from a Linux User ID.
March 20, 2019
How to Securely wipe unused space on Windows
This post talks about how you can securely wipe the unused space on Windows.
February 27, 2019
Adding a Virtual Host in Apache
This post includes a short snippet and some explanation about how you can use Virtual Hosts with Apache.
February 16, 2019
Using the Nano Editor with a Raspberry Pi
Today I talk about the Nano editor which can be used to edit files on the Raspberry Pi over SSH.
February 9, 2019
Uninstall Apache as a Service on Windows
Today I share how you can uninstall the Apache Windows service.
January 26, 2019
Install Apache as a Service on Windows
Today I share how you can install the Apache webserver as a Windows service.
January 12, 2019
Setting up a Samba share on Fedora 26
This post goes through the process of setting up a Windows Samba share on Fedora 26. This will let me access folders on the Fedora machine using windows explorer.
December 29, 2018
Installing Linode Longview on Fedora 28
This post talks about how you can install Linode Longview on Fedora 28. Why doesn’t the standard instructions work? It turns out that you cannot just install Linode Longview on Fedora 28 as it isn’t a supported operating system. When running the automatic install script the following error will appear. Failed to synchronize cache for
December 15, 2018
Cookie Clicker AutoHotkey Script for Clicking
Cookie Clicker AutoHotkey Script for Clicking This post talks about the simple AutoHotkey script I have written for clicking repeatedly for Cookie Clicker.
December 1, 2018
Upgrading Ubuntu 16.04 to 18.04
This blog post talks about how you can upgrade from Ubuntu 16.04 to Ubuntu 18.04.
November 14, 2018
Enabling SSH on Ubuntu 18.04
By default Ubuntu 18.04 doesn’t enable SSH, this post describes the steps you need to set up SSH.
October 31, 2018
How to set the Timezone on Ubuntu 18.04 Server
Today I am writing about how you can change the timezone on Ubuntu 18.04 Server.
October 24, 2018
How to install Python Pip on Ubuntu 18.04 Server
This post describes how you can install Python Pip on ubuntu 18.04.
October 20, 2018
Halite AI Challenge
This blog post talks about the Halite AI Challenge that I and many of my colleagues are currently competing in.
October 13, 2018
Create Clone Commands for all Repositories on a GitHub page
This post talks about how you can create git clone links for all the repositories from a GitHub page.
August 29, 2018
Blocking a user or IP from a server using iptables
This post describes how you can block a user from your webserver using iptables.
August 15, 2018
Installing a Root Certificate Authority on Fedora 28
This post documents the process of installing a Root Certification Authority on Fedora 28. Adding a Root Certificate Authority to Fedora 28 First you must obtain the PEM file for your root certificate. This will either need to be created by you or will be given to you by your organisation. This is the certificate
July 25, 2018
How to Install the official MySQL community server on Fedora 28
Today I talk about how you can install the official MySQL community server on Fedora 28.
July 21, 2018
Unblocking Kibana port 5601 on Fedora
This post describes how you can unblock port 5601 to allow Kibana traffic through in the Fedora firewall.
July 18, 2018
How to convert an entire database to a new character set collation
This post talks about how you can convert an entire database to a specific collection.
July 14, 2018
Unblocking Elasticsearch port 9200 on Fedora
This post describes how you can unblock port 9200 to allow Elasticsearch traffic through in the Fedora firewall.
July 7, 2018
Showing other installable versions of packages on Fedora 28
Today I write about how you can list all installable versions of a package in Fedora.
June 30, 2018
Installing an RPM on Fedora 28
Today I detail the command line arguments needed to install an RPM on Fedora 28.
June 9, 2018
Show the full URL in the Opera Touch address bar
This post describes how you can configure Opera Touch to show the full URL in the address bar.
June 6, 2018
Changing boot order with GRUB on Fedora
In this post I talk about how you can change the default selected OS and reorder the boot list in GRUB for Fedora.
June 2, 2018
How combining PHP flags works for function calls
Here I talk a bit about how combining PHP flags work and why we use a vertical bar to combine them.
May 30, 2018
Exploring the many method parameters of drawImage with HTML5 Canvas
In this post I look at the different method parameters that can be used with drawImage and what they are useful for.
May 23, 2018
Removing a passphrase from a SSH key
Here I explain how you can remove a passphrase from a SSH key.
May 19, 2018
New IoT Sensors part of my website
This post talks about the new IoT sensors part of my website.
May 16, 2018
Installing .NET Framework 2 On Windows 10
This post describes how you can install .NET Framework 2 on Windows 10.
April 25, 2018
Helping the Silph Road as a Pokemon Go Researcher
Here I talk about what I do as a Silph Road Researcher in the Pokemon Go Community.
April 21, 2018
New HTML5 Canvas Experiments and tutorials section of my website
This post talks about the new HTML5 Canvas part of my website and what I plan to do with it.
November 25, 2017
How to Disable SELinux on Fedora 26
This post describes what SELinux is and how you can disable it on Fedora 26 if you need to.
November 18, 2017
Installing a Root Certificate Authority in Firefox
Firefox, unlike many other applications, keeps a store of its own trusted root certificate authorities. This means that adding a new root certificate to the operating system will not work. This post runs through how to add a new root certificate to Firefox.
November 11, 2017
Installing a Root Certificate Authority on Fedora 26
This post documents the process of installing a Root Certification Authority on Fedora 26.
November 8, 2017
Enabling SSH on Ubuntu 16.04
By default you are not able to SSH into an Ubuntu 16.04 machine and this blog post describes the steps needed to install SSH server.
October 28, 2017
Exclude Fedora packages from updating with dnf or yum
This post describes how to exclude specific packages from being updated with Fedora and dnf or yum
October 4, 2017
apt Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
This post explains why you may sometimes not be able to run apt commands and how to find out what is causing the issue.
September 27, 2017
HTML5 Canvas Drawing Tutorial – Basic Shapes
This post is the first in a series of blog posts where I explore the HTML5 canvas. This first tutorial looks at creating the basic elements required to draw on a canvas and drawing some basic shapes.
September 20, 2017
Removing IP Block from WHM cPHulk
If you are locked out of your website due to the cPHulk blocking your IP address there is an easy way to unblock yourself. This post describes how you can do this from your servers command line.
September 16, 2017
Configuring TeamCity for a PHP project
This post describes configuring TeamCity for a PHP project using composer. Setting up continuous integration of unit testing from a git repository.
September 9, 2017
Virtual box shared folder access denied Fixed
I was looking to add shared folders to my Fedora VM but during mounting them there was an error. The error “access denied” appeared each time I attempted to mount the volume. This post explains why this happens and what you can do to fix it.
September 6, 2017
New website created
A slight deviation from my normal weekly posts to announce that the most recent update to chewett.co.uk has been uploaded! I have added a couple of pages including: Contact me page – A simple page with the easiest way contacting me Legal Stuff – Includes the software licence for code snippets on my blog and website
September 2, 2017
Installing LaTeX and TeXMaker on Windows
LaTeX is a document writing system allows you to focus on the content of the letter or paper. In this post I describe how to set up a LaTeX typesetting program and TeX editor on Windows.
August 30, 2017
Creating a Raspberry Pi backup script with scp and Bash on Windows
This post describes a simple way to keep backups of a Raspberry Pi or any other Linux computer.
August 26, 2017
Modifying a WordPress theme with a child theme
The recommended way to modify a WordPress theme is to use a child theme. This allows redefining all features of the parent theme without manually changing the theme. This post describes why you might want to do this and how to do it.
August 23, 2017
Installing Ubuntu Linux tools for Windows
I am a big fan of Linux and today want to share how you can install the Windows Subsystem for Linux (WSL) on Windows 10. This new feature available in Windows 10 lets you install a Linux bash shell and run various linux tools on Windows. Here I describe how to set up and install
August 16, 2017
Setting up SSL with certbot with Apache and Fedora
This post describes how to set up a SSL certificate with Certbot on Apache and Fedora. The guide primarily follows the guide on the certbot website however adds some additional information for if auto configuration fails.
July 26, 2017
Virtualbox Guest additions on Fedora
This post describes how to install virtualbox guest additions on a Fedora virtual machine.
July 15, 2017
Automatic installation of commonly used packages
A number of years ago I was introduced to using Linux day to day. During this period of time I ran a large number of virtual machines to test its performance and various aspects which make it “linux”. Typically when I first set up a system I would install a common set of packages. Then
May 12, 2017
Let’s Encrypt Auto SSL on Web Host Manager CPanel Server
This blog post describes how to set up free SSL certificates on a Web Host Manager CPanel server. This requires root access to the server, if you don’t have access to this then you must ask your service provider to install it for you. What is Let’s Encrypt? Let’s Encrypt is in their own words
February 14, 2016
BIGINT Overflow Error Based SQL Injection
In MySQL 5.5+ you can abuse a new feature with BIGINT values. This involves a problem called integer rollover and your ability to run arbitrary SQL. The problem of integer rollover Integer rollover happens when a number is too big or small and is made bigger/smaller. In the case where the number is the highest
June 3, 2015
Mysql workbench working with key based exchange mechanisms
It appears newer linux sshd configs (fedora 22) by default include a smaller set of key exchange based mechanisms that they have turned on. This means that it gives errors saying it is unable to connect to the server. To fix this you need to enable some of the older key exchange mechanisms, Adding this line
May 22, 2015
Why are PHP’s function names a mess?
I have always wondered this, its exceptionally hit and miss and there isnt any real standards. I recently found the reason on the internet Well, there were other factors in play there. htmlspecialchars was a very early function. Back when PHP had less than 100 functions and the function hashing mechanism was strlen(). In order to
September 2, 2013
Add a user to a group in Linux
How to add a user to a group in Linux usermod -a -G Its a simple as that. So for me adding the user “chewett” to the user “vboxusers” i run the command usermod -a -G vboxusers chewett The -a flag means that the new group is appended, without it you will overwrite your current
September 1, 2013
Location of GeoIP.dat for PHP
To find the location of GeoIP for PHP you can ssh into the server and use the “find” command. find / -iname GeoIP.dat Will return a list of file paths where the file with this name is found. In my case I found: /usr/share/GeoIP/GeoIP.dat /usr/local/share/GeoIP/GeoIP.dat /opt/geoip/share/GeoIP/GeoIP.dat In my case the bottom link was the one
March 18, 2013
Show trailing whitespace in Vim
Vim is a wonderful command line text editor with syntax highlighting and everything you could ask for provided you turn on the functionality. Recently i was shown that it was also show trailing whitespace with a quick addition to the .vimrc file. All you need to do is add the following: set list set listchars=tab:→\
November 6, 2012
All computer sounds reduced when plugging in an iPhone/iDevice
Since i reinstalled my laptop a couple of weeks ago the sound of many applications randomly got reduced requiring me to go into the sound mixer to restore the levels. I noticed this most often when i plugged in my iPhone into the computer. Since i initially thought this was related to my iPhone in
May 29, 2012
Grace Hopper – Computer Science Legend
I’m relatively surprised that I hadn’t heard of her before a couple of weeks ago. While discussing small loop optimizations with some friends someone referenced her nanoseconds video (see below). This short video explains quite simply, the concept of a nanosecond. After seeing her talk about nanoseconds, I went to research her a bit further