# The Terminal & Shell — Linux

Source: https://www.geekswithgeeks.com/en/linux/linux-terminal

> Opening a terminal and reading the shell prompt.

## What is a shell?

The **shell** is a program that reads commands you type and asks the kernel to execute them. **Bash** is the most common Linux shell. The **terminal** is just the window you type into.

## Opening a terminal

On most desktop distros, `Ctrl+Alt+T` opens a terminal. You'll land in your shell with a prompt waiting for input.

```bash
whoami          # who am I logged in as
hostname        # this machine's name
date            # current date/time
```

Output:

```
alice
ubuntu-server
Thu Sep  4 10:00:00 IST 2026
```

## Reading the prompt

A typical prompt `alice@ubuntu-server:~$` shows **user**@**host**:**current-directory**. A trailing `$` means a normal user; `#` means you're root (superuser).

**Quiz:** A prompt ending in `#` instead of `$` usually means:

- [ ] A syntax error occurred
- [x] You are logged in as root
- [ ] The terminal is frozen

*Answer:* You are logged in as root. `#` is the traditional prompt symbol for the root/superuser account.