Tech Rescue

Hector Perez

Configure Cron Jobs in Linux

Problem: I need a Node.JS script to run automatically at a given time interval. Solution: Configure a cron job to automatically run my script at the configured time interval. Example: Let's say that I need to run a Node.JS script every 8 hours on my computer. Note that

Delete X-Forwarded- Headers with Kong

Delete X-Forwarded- Headers with Kong

Read this if you want to delete x-forwarded- headers with Kong gateway.

Hashcat

Hashcat

Quick example of dictionary and brute force attacks using Hashcat.

Install Brave Browser in Fedora 38

Today I decided to try this new browser. According to their website the following instructions should work. sudo dnf install dnf-plugins-core sudo dnf config-manager --add-repo https://brave-browser-rpm-release.s3.brave.com/brave-browser.repo sudo rpm --import https://brave-browser-rpm-release.s3.brave.com/brave-core.asc sudo dnf install brave-browser However, in practice things

Generate random UUID in Node.JS

Generate random UUID in Node.JS

Quick and easy thanks to crypto library. In a new .js file paste the following code: const crypto = require('crypto'); console.log(crypto.randomUUID()); console.log(crypto.randomUUID()); console.log(crypto.randomUUID()); console.log(crypto.randomUUID()); console.log(crypto.randomUUID()); console.log(crypto.randomUUID()); console.log(crypto.randomUUID()); console.log(

Fully rounded-corner cube module in OpenSCAD

For some projects involving metal plates for ropes I needed to create this module to create a smooth surface without sharp edges. /* * Author: Hector Perez * Date: May/1/2023 * Description: Fully rounded-corner cube */ $fn = 60; allRoundedCube(1,12,20,0.2); module allRoundedCube(height, width, depth, roundness_diameter){ hull(){ sphere(

Figure 8 descender in OpenSCAD

A simple figure 8 descender in OpenSCAD.