How to set ZSH as your default Shell
You may have installed ZSH and every-time you open your terminal, it opens BASH by default. How do you set your default shell to open… Read More »How to set ZSH as your default Shell
CLI
How to Base64 Encode/Decode in the Terminal/CLI
If you need to either Encode or Decode a Base64 value, there are many ways to achieve this, one of them is directly from your… Read More »How to Base64 Encode/Decode in the Terminal/CLI
How to Enable Syntax Highlighting in Vim
There are a few different ways to enable Syntax Highlighting in Vim. Option 1 – Edit ~/.vimrc Add syntax on to your local ~/.vimrc Option… Read More »How to Enable Syntax Highlighting in Vim
How to view the Encoded Authorization Failure Message in AWS
You may come across a message that reads similar to the following: Encoded authorization failure message A full message, will look something like: How to… Read More »How to view the Encoded Authorization Failure Message in AWS
How to Generate a Random AlphNumeric String in Linux/MacOS
If you need to generate a random AlphaNumeric string from the Linux/MacOS Command-Line, then you can use the following script: This can also be piped… Read More »How to Generate a Random AlphNumeric String in Linux/MacOS
What temperature does your Mac CPU idle at?
Sometimes you will find that your Mac is running very hot, and you may want to keep track of it over time to see if… Read More »What temperature does your Mac CPU idle at?
How to Fix the ‘Bad Interpreter’ Error from AWS and Python 3.7
This error often looks something like: Reinstall AWSCLI If you have started getting the Bad Interpreter error when you call awscli, then you can easily… Read More »How to Fix the ‘Bad Interpreter’ Error from AWS and Python 3.7
Key-Value CLI Arguments in Python
If you have a CommandLine application (CLI) written in Python, you have a number of ways that you can take arguments from the user. You… Read More »Key-Value CLI Arguments in Python
How to solve AttributeError: ‘int’ object has no attribute ‘split’ – make: [sharedmods] Error 1
If you get the following error while trying to install something via Homebrew AttributeError: ‘int’ object has no attribute ‘split’ – make: *** [sharedmods] Error… Read More »How to solve AttributeError: ‘int’ object has no attribute ‘split’ – make: [sharedmods] Error 1
How to Push a Docker image to AWS ECR
By default, Docker pushes its images to Docker Hub. While Docker Hub is a great way to share both your public and private images, you… Read More »How to Push a Docker image to AWS ECR
How to Restart Sound Driver on a Mac
So for some strange reason, your audio has stopped playing through the Macbook Pro speakers, but if you plug in an external audio device, it… Read More »How to Restart Sound Driver on a Mac
How to tell what the CHMOD value of a file/directory is
chmod alters the permissions for a file or directory, you could allow full read/write access to a file or directory by running the following command:… Read More »How to tell what the CHMOD value of a file/directory is
How to cleanup a /var/log/journal in Linux
You may find your /var/log/journal directory taking up a lot of disk-space. How do you go about removing, or deleting all these files under var… Read More »How to cleanup a /var/log/journal in Linux
Get the total size of all the files in a directory
It’s amazing how many times I’ve need to find out the total size of all the files in a directory on one of our servers.… Read More »Get the total size of all the files in a directory
Tail and Grep: display all output but highlight search matches
I tail logs quite a lot. An example would be to tail the Apache2 access logs. This is simple to do: This will show a… Read More »Tail and Grep: display all output but highlight search matches
How to replace newlines with commas in CLI
If you need to replace all newline characters with a comma, or perhaps some other delimiter, then using the build-in tr utility will work very… Read More »How to replace newlines with commas in CLI
How to remove files without a certain extension?
You have a directory with a lot of files, and you want to delete only the files that don’t match a specific extension. This is… Read More »How to remove files without a certain extension?
How to debug an Apache 404 error
So you are getting an error 404 or perhaps even worse, a 500! The error in your Apache2 logs looks something like this: ***.162.245.*** -… Read More »How to debug an Apache 404 error
How to Change the Timezone on Ubuntu Server
If you’ve ever typed date into your Ubuntu Server and seen a different time or timezone appear than you expected, then it probably means that… Read More »How to Change the Timezone on Ubuntu Server
Learn Golang as a Python Developer
Learning Go or Golang as a Python developer, programmer or software engineer is easier than you think. While there are quite a lot of things… Read More »Learn Golang as a Python Developer
Remove Special Characters in a String using Bash
Programming languages provide the ability to remove special characters from a string quite easily. Sometimes you need to also do this from your command-line using… Read More »Remove Special Characters in a String using Bash
How to Always run Python 3 from Bash
Given a directory that contains: We can create a runme.sh file to always make sure we are running python 3. Create a shell script Create… Read More »How to Always run Python 3 from Bash
How to Push Docker Images to AWS ECR
Docker images are usually stored on Docker Hub, but AWS’s Elastic Container Registry can also be used. It’s a great solution and this post teaches… Read More »How to Push Docker Images to AWS ECR
How to monitor Network Traffic on Linux
There is a fantastic tool to see and monitor Bandwidth and Network Traffic on Linux. It’s called bmon and it works out of the box.… Read More »How to monitor Network Traffic on Linux
How to use Screen on Linux
Screen on Linux is a popular command-line program that lets you multiplex between interactive shells. What that means is, you can use screen to save… Read More »How to use Screen on Linux