How Computer Works

What is Shell

The shell is a command-line interpreter and scripting environment that serves as an interface between the user and the operating system’s core, known as the kernel. It allows users to interact with the system by typing human-readable commands in a terminal, which the shell then translates into instructions the kernel can understand and execute.

Shell Scripting Language

Shell scripting is a command-line programming language used to automate tasks in Unix-based systems like Linux and macOS. Common shell scripting languages are Bourne Shell (sh), GNU Bourne-Again Shell (Bash), C Shell (csh), KornShell (ksh), Z shell (Zsh), Debian Almquist shell (dash), Fish shell (fish), PowerShell (pwsh), Nushell (nu).

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#include <stdio.h>

int main() {
    printf("Hello, World!\n");
    return 0;
}