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OpenSnitch Manager Script

A bash script to manage OpenSnitch installation, uninstallation, and repair on Linux systems. This script provides automated installation of both the OpenSnitch service and UI components, with proper desktop integration and autostart configuration.

Supported Distributions

• Debian-based systems (Debian, Ubuntu, Linux Mint, Pop!_OS)
• RHEL-based systems (CentOS, Fedora)
• Arch Linux

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List of Linux commands in tables categorized by tool types. source

File and Directory Operations

Command	Description
cp	Copy files to another location
mv	Move or rename files or directories
rm	Remove files

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List of macOS commands in tables categorized by tool types. source

File and Directory Operations

Command	Description
cp	Copy files to another location
mv	Move or rename files or directories
rm	Remove files
mkdir	Create new folders

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#!/bin/bash

# Define colors for logs
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m' # No color

log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }

MohamedElashri

Running a Long-Running Jupyter Notebook Remotely using tmux

Step-by-Step Instructions:

1. Start tmux Session
   • Connect to your remote server via SSH:

     ssh user@remote-server

• Start a tmux session to keep your terminal session active even after disconnection:

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Cursor IDE Update Script

This Python script automates the process of downloading, installing, and updating the Cursor IDE on Linux. It checks if a new version is available, updates the AppImage, and refreshes the desktop entry and icon.

Prerequisites

• Python 3.x
• urllib and hashlib modules (standard with Python 3)

Usage

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This guide explains how to create a persistent SSH reverse tunnel using systemd without relying on tools like autossh. This approach automatically restarts the SSH tunnel if it fails or gets stuck due to disconnections.

Why Use systemd for SSH Tunnels?

Using systemd provides several benefits over standalone SSH or autossh:

• Automatic Restart: If the SSH connection fails, systemd restarts it automatically.
• Keep Alive: Prevents stale SSH connections by using SSH's ServerAliveInterval and ServerAliveCountMax.
• Clean and Simple: Avoids external tools and manages the service with native system management.

Steps to Set Up

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This bash function automates the process of initializing a Git repository, creating a GitHub repository, and pushing your local files—all from the command line using the GitHub CLI (gh). It also disables wikis and issues for the created repo.

Add the following function to your .bashrc or .zshrc file:

create_and_push_repo() {
    if ! command -v gh &> /dev/null
    then
        echo "Error: GitHub CLI (gh) is not installed. Please install it first."

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Description

At present, Cosmic Desktop by System76 lacks a GUI to configure input source switching. However, the system uses the XKB (X Keyboard Extension) system, which allows manual configuration of input switching by modifying the relevant XKB settings.

The grp:win_space_toggle option defines a key combination (Super+Space or Win+Space) for switching between input sources. The provided workaround manually sets this option by editing the xkb_config file.

This approach gives users the flexibility to switch between keyboard layouts without waiting for native support in Cosmic Desktop.

Notes

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Memory Type	NVIDIA GeForce RTX 3090	NVIDIA RTX A5000	NVIDIA GeForce RTX 2080 Ti
Global Memory	24 GB GDDR6X	24 GB GDDR6	11 GB GDDR6
Memory Interface	384-bit	384-bit	352-bit
Memory Bandwidth	936 GB/s	768 GB/s	616 GB/s
L2 Cache	6 MB	Not specified	5.5 MB
Shared Memory	164 KB per SM	164 KB per SM	64 KB per SM
Constant Memory	64 KB	64 KB	64 KB
Texture Memory	Part of global memory	Part of global memory	Part of global memory
Local Memory	Part of global memory	Part of global memory	Part of global memory