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 as ZSH? …
Read Article →CLI
132 articles about cli development, tools, and best practices
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 commandline itself!
How …
Read Article →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
echo "syntax …How to view the Encoded Authorization Failure Message in AWS
You may come across a message that reads similar to the following:
<meta charset="utf-8">Encoded authorization failure message
A full …
Read Article →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:
dd if=/dev/random bs=8 …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 it’s persistent or only a …
Read Article →How to Fix the ‘Bad Interpreter’ Error from AWS and Python 3.7
This error often looks something like:
.zshrc: /usr/local/bin/aws: bad interpreter:
/usr/local/opt/python/bin/python3.6: no such file or directory …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 could take the …
Read Article →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: *** …
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 may find the …
Read Article →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 still …
Read Article →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: …
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 log …
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.
I have grown to …
Read Article →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:
tail -f /var/log/apache2/access.log
This will show …
Read Article →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 well …
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 a simple task …
Read Article →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.*** - - …
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 …
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 to learn …
Read Article →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 …
Read Article →How to Always run Python 3 from Bash
Given a directory that contains:
|
|- app.py
|- requirements.txt
|- ...
|- <- other-files ->
|- ...
We can create a runme.sh file to always make …
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 …
Read Article →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.