Terminal, Shell, and Git Bash

Before using more Git commands, it helps to understand the environment that receives and runs them. A terminal, a shell, a CLI, and Git are related, but they are not the same thing.

1. Four distinct pieces

• A terminal is the text interface where you type and see output. Windows Terminal and VS Code’s integrated terminal are examples.
• A shell reads the command line, interprets shell syntax, finds programs, and starts them. CMD, PowerShell, and Bash are shells.
• A CLI is the collection of text commands and syntax a program exposes. It is an interface, not a separate program or one individual command.
• Git is the executable version-control program.

When you enter:

git status

the pieces work together like this:

You type in the terminal
        ↓
The shell finds `git` through PATH and starts it
        ↓
Git interprets `status` according to its CLI
        ↓
The result appears in the terminal

status is one command within Git’s CLI. Other commands in that interface include add, commit, and log.

2. Git Bash on Windows

Git Bash is an environment installed with Git for Windows. It provides a terminal running Bash, Git, and Unix-like command-line tools.

Git Bash is not Git itself. Bash can run many programs, and Git can also run from PowerShell or CMD when its executable is available through PATH. Changing the terminal profile in VS Code from PowerShell to Git Bash changes the shell inside the same terminal panel; it does not replace Git.

The shells have different languages:

• CMD is an older Windows command shell.
• PowerShell is designed for Windows administration and works extensively with structured objects.
• Bash is widely used on Linux and macOS; Git Bash provides a compatible environment on Windows.

A navigation command failing in one shell does not imply that Git is broken. Check whether the syntax belongs to the active shell first.

3. Current working directory and repository discovery

Every shell session has a current working directory. Display it in Git Bash with:

pwd

When the shell launches Git, Git inherits that directory automatically. Git starts there and searches upward through parent directories for .git:

/c/projects/shop/app/Models
               ↓
/c/projects/shop/app
               ↓
/c/projects/shop/.git  ← repository found

Git stops at the first repository it finds. It does not search sideways into sibling directories. If it reaches the filesystem root without finding .git, it reports that the current location is not inside a Git repository.

4. Navigation commands in Bash

pwd        # Print the current working directory
ls         # List entries in the current directory
cd app     # Enter the app directory
cd ..      # Move to the parent directory
cd -       # Return to the previous directory

.. always means the parent directory. It does not mean the previously visited directory; that is what cd - provides.

5. Absolute and relative paths

An absolute path identifies a location from the filesystem root:

/c/projects/shop/app

A relative path is resolved from the current working directory:

app
./app
../tests

If the current directory is /c/projects/shop/app, then ../tests resolves to /c/projects/shop/tests.

Git Bash commonly represents Windows drives like this:

C:\Projects\shop  →  /c/Projects/shop
D:\Work\api       →  /d/Work/api

Git for Windows also accepts many paths written as C:/Projects/shop, but pwd normally displays the /c/... form.

6. Spaces and quoting

The shell treats spaces as separators between arguments. This is incorrect for one directory named Backend Projects:

cd Backend Projects

Bash receives two arguments and usually reports too many arguments. Quote the complete path so it remains one argument:

cd "Backend Projects"
cd "/c/Users/Yousef Ahmed/My Repositories"

Escaping the space also works in Bash, though quoting is often clearer:

cd Backend\ Projects

7. Practical example

Use a disposable training location for this exercise:

mkdir "Git Shell Lab"
cd "Git Shell Lab"
mkdir "Backend API"
cd "Backend API"
pwd
cd ..
ls

After entering Backend API, pwd should end with /Git Shell Lab/Backend API. After cd .., ls should show the Backend API directory.

8. Common mistakes and safe habits

• Do not treat Terminal, Shell, CLI, and Git as interchangeable terms.
• Do not assume shell-specific commands behave identically everywhere.
• Quote paths that contain spaces.
• Run pwd when the working directory is uncertain.
• Run git status before changing repository state.
• Use a disposable repository for experiments, not a production project.

9. Summary

Terminal = the text interface you type into
Shell    = the command interpreter that finds and starts programs
CLI      = a program's text-command interface
Git      = the version-control program
PATH     = locations the shell searches for executables
CWD      = the directory inherited by a launched program

10. Knowledge check

1. What changes when VS Code switches from PowerShell to Git Bash?

The shell changes. The VS Code terminal panel remains the terminal, and Git remains the executable program being launched.

2. Who interprets status in git status?

The shell finds and starts the git executable through PATH. Git itself then interprets status according to Git’s CLI.

3. How does Git find a repository from a nested directory?

Git begins at the inherited current working directory and checks it and each parent directory for .git. It stops at the first match.

4. Why should a path containing spaces be quoted?

Without quotes, the shell treats each space-separated part as a different argument. Quotes preserve the complete path as one argument.