Recover a Corrupt Google Cloud VM with Disk Space Issues Caused by Docker

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Google Cloud VMs can sometimes get stuck or become inaccessible due to disk space exhaustion — often from leftover Docker images, containers, and volumes accumulating after CI/CD pipelines. Here’s a clear, practical step-by-step guide to restore your VM and clean up Docker efficiently. Scenario Step 1: Create a Rescue VM and Attach the Corrupt Disk … Read more

Why Some “Copycat” Companies Succeed Despite Competition

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Even with existing ideas, execution beats originality in many real-world cases. Here’s why they can succeed: 1. Better Execution 2. Better Timing 3. Focused Niche / Geography 4. Superior Distribution / Growth Engine 5. Brand Positioning or Pricing Why VCs Often Don’t Like “Copycat” Models They are playing a different game: 1. VCs Seek Asymmetric … Read more

Fix and Launch ScriptCommunicator on Ubuntu (and missing Qt dependencies)

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ScriptCommunicator is a powerful Qt-based serial port communication tool, popular among embedded developers and makers. Here’s a straightforward guide to get it running on Ubuntu. Step 1: Download ScriptCommunicator Step 2: Extract the package Unpack the archive: tar -xvzf ScriptCommunicator.tar.gzcd ScriptCommunicator Step 3: Install missing Qt dependencies Ubuntu may miss some Qt libraries. Install them: … Read more

Fixing GitLab Runner Shell Executor Permission Issues on Ubuntu 20-25

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The Issue: The error typically occurs when the GitLab Runner shell executor doesn’t have the necessary permissions to access or execute files in the /home/gitlab-runner directory. This can happen if: The Solution: A straightforward fix is to remove all dotfiles (.*) in the /home/gitlab-runner directory. These files might be causing the permission errors, especially if … Read more

How to Configure SSH on Ubuntu: Complete Guide for Secure Remote Access

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Introduction Secure Shell (SSH) is an essential tool for managing remote systems securely. Whether you’re administering a server or accessing a remote workstation, SSH provides encrypted communication to protect your data from eavesdropping and unauthorized access. In this guide, we’ll walk you through the process of configuring SSH on Ubuntu, from basic setup to advanced … Read more

Ubuntu List Installed Packages: Commands and Management Tips for Efficient System Control

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Introduction Managing installed packages is a critical aspect of maintaining an efficient Ubuntu system. Whether you’re a beginner or an advanced user, understanding how to list, manage, and troubleshoot installed packages can save you time and prevent system issues. This guide provides a comprehensive overview of the commands and techniques you need to master package … Read more

How to Reset Forgotten Ubuntu Login Password: Recovery Methods Explained

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Understanding the Need for Password Recovery Forgetting your Ubuntu login password can be a frustrating experience, especially when you need immediate access to your system. Whether you’re a beginner or an advanced user, losing access to your account can disrupt your workflow. Fortunately, Ubuntu provides straightforward methods to reset your password and regain access to … Read more