#     
## Overview
**`dirname()`** is a File class method in Ruby that returns all components of a specified file name, except the last one. For example, `/home/okwudili` returns `/okwudili` when invoked.

## Syntax
```ruby
File.dirname(file_name)
```
## Parameters
* **`file_name`**: This is the file name whose components we want to return.
## Return value
This method returns a string containing all components of the file name `file_name`, except the last one.
## Code example



# Get the directory names of the files
puts File.dirname("/home/okwudili/code/main.rb")
puts File.dirname("/main.rb")
puts File.dirname("/home/okwudili/code/ruby/main.rb")

## Explanation
* **Lines 2 to 4**: We get the directory names of some files using the `dirname()` method. Then, we print the values to the console.

What is File.dirname() in Ruby?

In Ruby, dirname() returns all parts of a file name except the last one, e.g., '/home/okwudili' becomes '/home'.