File.read for entire content in Ruby - Mini Project: Build & Apply

Read Entire File Content with File.read

📖 Scenario: You have a text file named example.txt that contains some important information. You want to read all the content from this file at once to use it in your Ruby program.

🎯 Goal: Learn how to use File.read in Ruby to read the entire content of a file into a single string variable.

📋 What You'll Learn

Create a variable called filename with the exact value 'example.txt'.

Create a variable called content that reads the entire content of the file named in filename using File.read.

Print the variable content to display the file content.

💡 Why This Matters

🌍 Real World

Reading entire files is common when you want to process text files, configuration files, or logs in one go.

💼 Career

Many programming jobs require reading files to load data, parse information, or prepare input for programs.

1

Set the filename variable

Create a variable called filename and set it to the string 'example.txt'.

Ruby

# Create a variable called filename and set it to 'example.txt'
# Your code here

Need a hint?

Use single quotes around the filename string.

2

Read the entire file content

Create a variable called content and set it to the result of File.read(filename) to read the whole file content.

Ruby

filename = 'example.txt'
# Create a variable called content that reads the entire file using File.read(filename)
# Your code here

Need a hint?

Use File.read with the variable filename as the argument.

3

Print the file content

Use puts content to print the entire content of the file stored in the variable content.

Ruby

filename = 'example.txt'
content = File.read(filename)
# Print the content variable
# Your code here

Need a hint?

Use puts to display the content on the screen.

4

Run and see the output

Run the program to see the entire content of example.txt printed on the screen.

Ruby

filename = 'example.txt'
content = File.read(filename)
puts content
# Run the program to display the file content

Need a hint?

Make sure the file example.txt exists with the expected content before running.