This error message typically appears when you try to execute a Ruby command,
but the system can't find the Ruby interpreter.
To resolve this issue, you can try the following steps:
On Ubuntu or Debian-based systems, you can use apt:
sudo apt update
sudo apt install ruby
On CentOS or Red Hat-based systems, use yum:
sudo yum install ruby
On macOS, you can use Homebrew to install Ruby:
brew install ruby
On Windows, you can download the Ruby installer from the official Ruby website:
https:
Reload your terminal: After installing Ruby or modifying the PATH variable,
you may need to restart your terminal or source your profile to apply the changes.
Once you've followed these steps, try running ruby --version again to confirm that Ruby is installed and accessible from the terminal.
If there are no errors, you should see the Ruby version number displayed.