Escape characters (\) in Bash Scripting - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of this Bash command?

Consider the following command in a Bash shell:

echo "Hello\nWorld"

What will this command output?

Bash Scripting

echo "Hello\nWorld"

A Hello\nWorld

B

Hello
World

C Hello World

D Hello\ World

💡 Hint

Remember that double quotes allow some escape sequences, but \n is not interpreted by echo by default.

In Bash, echo does not interpret \n as a newline unless used with -e option. So the output is the literal string with \n.

💻 Command Output

intermediate

What does this command print?

What is the output of this Bash command?

echo -e "Hello\nWorld"

Bash Scripting

echo -e "Hello\nWorld"

A Hello\nWorld

B

Hello
World

C Hello\ World

D Hello World

💡 Hint

The -e option enables interpretation of backslash escapes.

With -e, echo interprets \n as a newline, so it prints Hello then a newline then World.

📝 Syntax

advanced

Which command correctly prints a backslash character?

You want to print a single backslash character (\) in Bash using echo. Which command will do this correctly?

A echo "\\"

B echo '\\'

C echo "\"

D echo \

💡 Hint

Backslash is an escape character, so you need to escape it to print it literally.

Inside double quotes, \\ becomes a single backslash. Option A prints one backslash correctly.

🔧 Debug

advanced

Why does this command fail to print a newline?

This command is intended to print two lines:

echo "Line1\nLine2"

But it prints the literal string instead. Why?

Bash Scripting

echo "Line1\nLine2"

A Because double quotes prevent escape sequences

B Because echo requires single quotes to interpret \n

C Because \n is not a valid escape sequence in Bash

D Because echo does not interpret \n without -e option

💡 Hint

Try adding an option to echo to enable escape sequences.

By default, echo prints the string literally. The -e option enables interpretation of escape sequences like \n.

🚀 Application

expert

How to assign a variable with a literal backslash in Bash?

You want to assign a variable named path with the value C:\Users\Admin (including backslashes) in Bash. Which assignment is correct?

A path="C:\Users\Admin"

B path="C:\\Users\\Admin"

C path='C:\\Users\\Admin'

D path=C:\Users\Admin

💡 Hint

Single quotes prevent escape sequence interpretation in Bash.

Single quotes preserve backslashes literally, so option C assigns the exact string with backslashes.