Shell is a type of computer program called a command-line interpreter that lets Linux and Unix users control their operating systems with command-line interfaces. Shells allow users to communicate efficiently and directly with their operating systems.

Bash is a command-line interpreter that runs in a text window and allows the user to interpret commands to do various tasks. A Shell Script is a sequence of these commands contained within a single file. A Shell Script can be read and executed using Bash.

Bash is a command-line interpreter that runs in a text window and allows the user to interpret commands to do various tasks. A Shell Script is a sequence of these commands contained within a single file. A Shell Script can be read and executed using Bash.

Shell vs BASH vs PowerShell vs CMD - A. Yigit Ogun at Medium

graph LR
    A[Shell Environment] --> B["Bash (Bourne Again Shell)"]
    A --> C[PowerShell]
    A --> D["CMD (Command Prompt)"]

    subgraph "Bash (Bourne Again Shell)"
        B --> B1["Unix/Linux"]
        B --> B2["macOS"]
    end

    subgraph PowerShell
        C --> C1["Windows"]
        C --> C2["Cross-platform (PowerShell Core)"]
    end

    subgraph "CMD (Command Prompt)"
        D --> D1["Windows"]
    end

#!/bin/bash

echo "Hello, World!"

1. Make the script executable:

   chmod +x script.sh

2. Run the script:

   ./script.sh