Command line usage in AutoCAD - Step-by-Step Guide

Introduction

The command line in AutoCAD lets you type commands directly to draw and edit your designs quickly. It helps you work faster by avoiding multiple clicks and menus.

When you want to draw a line or shape quickly without searching menus

When you need to repeat a command multiple times efficiently

When you want to enter exact measurements or coordinates for precision

When you want to undo or redo actions fast

When you want to access commands not visible in the ribbon or toolbar

Steps

Step 1: Click inside the command line input area at the bottom of the AutoCAD window

- Command line panel

The cursor blinks inside the command line, ready for typing

💡 If the command line is not visible, press Ctrl+9 to toggle it on

Step 2: Type the name of the command you want, for example, LINE

- Command line input

AutoCAD shows prompts related to the command below the input area

Step 3: Follow the prompts by typing values or clicking points in the drawing area

- Command line prompts and drawing canvas

The command executes step-by-step as you provide inputs

Step 4: Press Enter to finish the command or repeat it

- Command line input

The command completes and the drawing updates accordingly

Step 5: Use the up and down arrow keys in the command line to cycle through previous commands

- Command line input

Previous commands appear for quick reuse

Before vs After

Before

The drawing area shows no command prompts and no text input area visible

After

The command line panel appears at the bottom with a blinking cursor ready for typing commands

Settings Reference

Command line window

📍 View tab > Palettes panel > Command Line

Controls where and how the command line appears

Default: Docked at bottom

Command line transparency

📍 Right-click command line > Transparency

Adjusts how see-through the command line panel is

Default: 0% (opaque)

Command line history size

📍 Options dialog > Display tab > Command line history

Sets how many previous commands are saved for recall

Default: 50 lines

Common Mistakes

Typing commands without pressing Enter

Commands do not start until Enter is pressed, so nothing happens

Always press Enter after typing a command name to activate it

Not following command prompts carefully

Skipping prompts or entering wrong values causes errors or unexpected results

Read each prompt in the command line and provide the requested input step-by-step

Command line panel hidden or closed

You cannot type commands if the command line is not visible

Press Ctrl+9 or enable the command line from the View tab to show it

Summary

The command line lets you type AutoCAD commands directly for faster drawing and editing

You must press Enter after typing a command to start it and follow prompts carefully

Use arrow keys to recall previous commands and speed up repetitive tasks

Practice

1.

What is the main purpose of the AutoCAD command line?

easy

A. To type commands and enter exact values quickly

B. To draw shapes using the mouse only

C. To save files automatically

D. To change the color of the interface

Solution

1. Step 1: Understand the command line function

   The command line allows users to type commands directly instead of using menus.

2. Step 2: Recognize the benefit of exact input

   It helps enter exact values and speeds up drawing or editing.

3. Final Answer:

   To type commands and enter exact values quickly -> Option A

4. Quick Check:

   Command line = quick, exact input [OK]

Hint: Command line is for typing commands fast [OK]

Common Mistakes:

• Thinking command line is for mouse drawing
• Confusing command line with file saving
• Assuming it changes interface colors

2.

Which of the following is the correct way to start the LINE command in AutoCAD's command line?

easy

A. Click the Line tool only

B. Type LINE and press Enter

C. Type LIN and press Enter

D. Type STARTLINE and press Enter

Solution

1. Step 1: Recall the exact command name

   The full command to draw a line is LINE.

2. Step 2: Confirm command line usage

   Typing LINE and pressing Enter starts the command correctly.

3. Final Answer:

   Type LINE and press Enter -> Option B

4. Quick Check:

   Exact command name + Enter = correct start [OK]

Hint: Type full command name then Enter [OK]

Common Mistakes:

• Using incomplete command like LIN
• Typing wrong command like STARTLINE
• Relying only on clicking without command line

3.

What will happen if you type CIRCLE in the command line and press Enter?

medium

A. AutoCAD will prompt you to specify the center point of the circle

B. AutoCAD will draw a circle automatically with default size

C. AutoCAD will close the current drawing

D. AutoCAD will show an error message

Solution

1. Step 1: Understand the CIRCLE command behavior

   Typing CIRCLE starts the circle drawing process.

2. Step 2: Recognize the prompt after command start

   AutoCAD asks for the center point before drawing the circle.

3. Final Answer:

   AutoCAD will prompt you to specify the center point of the circle -> Option A

4. Quick Check:

   CIRCLE command = prompt center point [OK]

Hint: Circle command asks for center point first [OK]

Common Mistakes:

• Assuming circle draws automatically
• Thinking it closes the drawing
• Expecting an error message

4.

You typed RECTANGLE in the command line but AutoCAD shows an error. What is the most likely cause?

medium

A. You need to restart AutoCAD

B. You forgot to press Enter after typing the command

C. The command line is disabled

D. You misspelled the command as RECTANGLE

Solution

1. Step 1: Check the typed command spelling

   AutoCAD commands must be typed correctly; RECTANG is the correct command.

2. Step 2: Identify common typing errors

   Typing RECTANGLE is incorrect and causes an error.

3. Final Answer:

   You misspelled the command as RECTANGLE -> Option D

4. Quick Check:

   Correct spelling avoids errors [OK]

Hint: Check spelling carefully before Enter [OK]

Common Mistakes:

• Not pressing Enter after typing
• Assuming command line is off
• Restarting unnecessarily

5.

You want to draw a line exactly 10 units long at a 45-degree angle using the command line. Which sequence should you type after starting the LINE command?

hard

A. Type 10,45 and press Enter

B. Type 10 45 and press Enter

C. Type @10<45 and press Enter

D. Type 45@10 and press Enter

Solution

1. Step 1: Understand relative coordinate input

   Typing @distance<angle inputs a line length and angle from the last point.

2. Step 2: Apply correct syntax for 10 units at 45 degrees

   The correct input is @10<45 to draw a line 10 units long at 45 degrees.

3. Final Answer:

   Type @10<45 and press Enter -> Option C

4. Quick Check:

   Relative polar input = @distance<angle [OK]

Hint: Use @distance

Common Mistakes:

• Using comma or space instead of <
• Reversing order of angle and distance
• Omitting @ for relative input