How to get filename without extension in Ruby?

In this article, we will learn how to get a filename in Ruby without its extension.

We can use the File.basename method to extract the last name of a filename. In Ruby, the File.basename method returns the last component of the filename.

Syntax:

File.basename(file_path [,suffix])

If we don’t provide any suffixes in the File.basename then it will only give the filename in the output as shown in the below example.

Example:

Ruby

filename = "home/anki/my_data/hello.rb"
filename_without_path = File.basename(filename)
puts filename_without_path

Output

hello.rb

To get the filename without extension, we have to provide a suffix .* in the File.basename. If suffix is .* , it removes any extension. Below is an example showing the use of .* :

Example:

Ruby

filename = "home/anki/my_data/hello.rb"
filename_without_extension = File.basename(filename, ".*")
puts filename_without_extension

Output

hello

Another example on how to get filename without extension:

Example:

Ruby

filename = "home/anki/my_data/hello.rb"
filename_without_extension = File.basename(filename, ".rb") 
puts filename_without_extension

Output

hello

In above example, we use .rb as suffix to remove the extension from the filename. This is another way to remove the extension from the filename. To use this, just provide .extension in the File.basename method.