Count Words and Lines in a Text File
Learn to count words and lines in a text file by getting input on the command-line interface.
Problem
Write a program that reads a file path from the command-line argument and counts the number of words and lines in that file.
ruby main.rb file.txtfile.txt contains 128 words in 13 lines
Counting words and lines in a text file
Purpose
Read command-line arguments
Analyze
This program is a generic utility, which means we can use the program for different text files. Therefore, we cannot set the input file path. When running a program, we can pass arguments to the program. These arguments are called command-line arguments.
Hints
We ...