find the path of a file in ruby

To find the path of a file in Ruby, you can use the File class and its expand_path method. The expand_path method takes a filename and returns the absolute path of that file.

Here's an example:

main.rb
file_name = "example.txt"
file_path = File.expand_path(file_name)
puts "The path of #{file_name} is #{file_path}"
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This will output something like:

main.rb
The path of example.txt is /Users/username/projects/example.txt
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This method is also useful when working with relative file paths. You can pass a relative file path to expand_path and it will return the absolute path based on the current working directory.