Color output (ANSI escape codes) in Bash Scripting - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output color of this script?

This bash script prints the word Success in a specific color. What color will the text appear as in the terminal?

Bash Scripting

echo -e "\e[32mSuccess\e[0m"

A Green

B Red

C Blue

D Yellow

💡 Hint

Look up the ANSI color code 32.

The ANSI escape code \e[32m sets the text color to green. The \e[0m resets the color back to default.

💻 Command Output

intermediate

What will this script output?

This script prints two words with different colors. What will be the color of the word Error?

Bash Scripting

echo -e "\e[33mWarning\e[0m and \e[31mError\e[0m"

A Warning is red, Error is yellow

B Warning is yellow, Error is red

C Both words are red

D Both words are yellow

💡 Hint

Check the ANSI codes 33 and 31.

Code 33 sets yellow color, 31 sets red. So 'Warning' is yellow and 'Error' is red.

📝 Syntax

advanced

Which option correctly prints Done in bold blue?

Choose the correct bash command that prints the word Done in bold blue text.

A echo -e "\e[1m\e[34mDone\e[0m"

B echo -e "\e[34;1mDone\e[0m"

C echo -e "\e[1;34mDone\e[0m"

D echo -e "\e[34m\e[1mDone\e[0m"

💡 Hint

The order of codes in the escape sequence matters.

The correct format is \e[1;34m where 1 is bold and 34 is blue. Other orders or separate codes may not work as expected.

🔧 Debug

advanced

Why does this script not color the output?

This script is intended to print Alert in red, but the output is plain text. What is the problem?

Bash Scripting

echo "\e[31mAlert\e[0m"

A The backslashes should be doubled like \\e

B The color code 31 is incorrect for red

C The reset code \e[0m is missing

D The echo command needs the -e option to interpret escape codes

💡 Hint

Try running the command with -e option.

Without -e, echo prints the escape codes as plain text. Adding -e enables interpretation of escape sequences.

🚀 Application

expert

How to print a blinking yellow warning message?

You want to print the word Warning in blinking yellow text using ANSI escape codes in bash. Which command achieves this?

A echo -e "\e[5;33mWarning\e[0m"

B echo -e "\e[33m\e[5mWarning\e[0m"

C echo -e "\e[33;5mWarning\e[0m"

D echo -e "\e[1;33mWarning\e[0m"

💡 Hint

Blinking code is 5, yellow is 33; order matters.

The code \e[5;33m sets blinking (5) and yellow (33) together. Other orders or separate codes may not work consistently.