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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."

MohamedElashri

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

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When generating the shell script, please ensure it adheres to the following best practices to provide a robust and user-friendly experience on Unix/BSD systems:

1. Comprehensive Error Handling and Input Validation:

   • Use set -euo pipefail at the beginning of the script to catch errors, unset variables, and failed pipes.
   • Validate all input arguments and provide meaningful error messages to guide the user.

2. Clear and Colorful Output:

   • Implement clear, user-friendly messages.
   • Use color coding (e.g., bold yellow for warnings) to enhance readability and draw attention to important information.

MohamedElashri

Criteria for using Bash scripts instead of Python:

1. The problem is easy to solve
2. I don't need to do any math beyond simple addition or multiplication
3. I don't need concurrency
4. I don't need data structures
5. I don't need functional programming code style
6. I don't need to work on Windows
7. I don't care about performance

MohamedElashri

#!/bin/bash

# Color definitions
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Function to print colored output

MohamedElashri

pages:
  - name: Home
    columns:
      - size: small
        widgets:
          - type: calendar

          - type: rss
            limit: 10
            collapse-after: 3

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#!/usr/bin/env bash
# Access the LXC container
pct enter <container_id>

# Navigate to the Homarr installation directory
cd /opt/homarr

# Access the SQLite database
sqlite3 /opt/homarr/database

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#!/usr/bin/env bash

set -e

# Function to log errors
log_error() {
    echo "ERROR: $1" >&2
}

# Function to log info