2026-03-27 11:29 Tags:Technical Literacy

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1. What is CLI?

CLI = Command Line Interface

A way to interact with your computer by typing text commands instead of clicking buttons.

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2. Intuition first (important)

🧠 Analogy

Think of your computer as a person:

• GUI (Graphical UI) → talking with gestures (clicking icons 🖱️)

• CLI → giving precise verbal instructions

Example:

• GUI: click folder → open file → click run

• CLI:

python script.py

👉 same goal, but CLI is:

• faster

• more precise

• scriptable

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3. What does it actually look like?

On your computer, CLI is:

• Mac → Terminal

• Windows → Command Prompt / PowerShell

You’ll see something like:

XX@macbook ~ %

That’s your CLI waiting for commands.

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4. Basic commands (you should know these)

Let’s build intuition step by step.

📁 Navigate folders

ls

→ list files (like opening a folder)

cd my_folder

→ go into a folder

cd ..

→ go back

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📄 Work with files

touch file.txt

→ create file

rm file.txt

→ delete file

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▶️ Run programs

python script.py

This is HUGE — this is how you:

• run ML scripts

• launch pipelines

• execute automation (like your n8n workflows later)

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5. Why developers LOVE CLI

This is the real reason:

(1) Speed

Typing > clicking

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(2) Automation (very important for you)

You can chain commands:

python preprocess.py && python train.py && python evaluate.py

👉 That’s basically a mini pipeline

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(3) Reproducibility

Instead of:

“click this, then this, then this…”

You can say:

“run this command”

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(4) Required for real tools

Things you want to learn:

• Git

• Docker

• APIs

• Cloud (AWS, GCP)

👉 all CLI-heavy

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