March 9, 2024
Nextcloud: A suite for file hosting, collaboration, and more. It’s like having your own private cloud for storage and office applications.
Plex: A popular media server that organizes and streams your movies, TV shows, music, and photos.
Home Assistant: An open-source home automation platform that allows you to control smart home devices.
GitLab: A web-based DevOps lifecycle tool that provides a Git repository manager for source code, CI/CD, and more.
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March 8, 2024
Install Ghostscript: If it’s not already installed, you can install Ghostscript using your distribution’s package manager. For Debian-based systems like Ubuntu, use:
sudo apt-get update sudo apt-get install ghostscript For Red Hat-based systems like Fedora, use:
sudo dnf install ghostscript Compress the PDF: Once Ghostscript is installed, you can compress your PDF file using the following command:
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf In this command:
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October 17, 2023
If you’re looking to shut down a virtual machine running on a Proxmox Virtual Environment (PVE), you can use the Proxmox command-line interface (CLI) to accomplish this task quite effectively. The command for shutting down a VM in Proxmox is qm shutdown, followed by the ID of the virtual machine you’d like to shut down. Here’s how to do it:
Access the Server: First, log in to your Proxmox server via SSH.
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September 8, 2023
We’ll be diving straight into the core concepts and components that will help you become proficient in Ansible. This tutorial assumes that you have already installed Ansible on your system and have a basic understanding of what Ansible is.
Setting Up the Environment # SSH Key Generation # If you haven’t already, generate an SSH key pair on your Ansible control node.
ssh-keygen -t rsa SSH Key Distribution # Copy the SSH public key to all your target nodes.
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September 5, 2023
Using pdftotext: # Installation:
If it’s not installed, you’ll need to install the poppler-utils package which includes pdftotext. sudo apt install poppler-utils or
yum install poppler-utils depending on your distribution.
Usage:
Once installed, you can convert a PDF to text and then count the words as follows: pdftotext input.pdf - | wc -w Here, input.pdf is your source PDF file, and wc -w counts the number of words. The - in pdftotext specifies that the output should be sent to stdout, which is then piped into wc.
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July 26, 2023
Psql is a command-line interface for interacting with PostgreSQL, a powerful and open source relational database system. Brew is a package manager for macOS that makes it easy to install and manage software. Here are the steps to install psql with brew:
First, install the brew package manager if you don’t have it already. You can do this by running the following command in your terminal: /bin/bash -c "$(curl -fsSL https://raw.
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July 13, 2023
Kubernetes is a powerful platform for managing containerized applications across a cluster of nodes. However, sometimes you may want to have more control over which pods are scheduled on which nodes, for various reasons such as performance, security, or cost.
What are taints and tolerations? # Taints and tolerations are a feature of Kubernetes that allow you to mark nodes with certain attributes or conditions, and then specify which pods can or cannot be scheduled on those nodes based on those attributes or conditions.
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July 11, 2023
Kubernetes tolerations are a way of allowing pods to be scheduled on nodes that have taints, which are markers that repel pods by default. Tolerations let you control which pods can run on which nodes, based on the pod’s requirements and the node’s characteristics.
What are Kubernetes tolerations? # Kubernetes tolerations are a pod property that allow a pod to be scheduled on a node with a matching taint. Taints are the opposite of node affinity, which is a way of attracting pods to a set of nodes.
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April 27, 2023
find . -name "*.md" -type f -exec sed -i '/line of text/d' {} \; This command uses find to locate all .md files in the current directory and its subdirectories recursively. The -exec option is used to execute the sed command on each file found. The {} is replaced by the name of each file found, and the \; is used to terminate the -exec option.
The sed command removes any line containing the string “line of text” from each file found.
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April 27, 2023
PhantomJS is a headless web browser for automating web page interactions.
To install PhantomJS on Ubuntu 22.10, you can follow these steps:
Update your system packages with sudo apt update && sudo apt upgrade Install the required packages with sudo apt install build-essential chrpath libssl-dev libxft-dev libfreetype6 libfreetype6-dev libfontconfig1 libfontconfig1-dev Download the PhantomJS binary file from its official website with wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-2.1.1-linux-x86_64.tar.bz2 Extract the file to /usr/local/share/ with sudo tar xvjf phantomjs-2.
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