You try to run a Ruby script with ruby myscript.rb but get an error: ruby: command not found. What is the most likely cause?

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Ruby - Basics and Runtime

You try to run a Ruby script with ruby myscript.rb but get an error: ruby: command not found. What is the most likely cause?

AThe script file <code>myscript.rb</code> has a syntax error.

BRuby is not installed or not in your system's PATH.

CYou forgot to save the script file.

DYou need to add <code>./</code> before the filename.

Step-by-Step Solution

Solution:

Step 1: Analyze the error message
The error ruby: command not found means the terminal cannot find the ruby program.
Step 2: Identify the cause
This usually means Ruby is not installed or its location is not in the system PATH environment variable.
Final Answer:
Ruby is not installed or not in your system's PATH. -> Option B
Quick Check:
Command not found means Ruby missing or PATH issue [OK]

Quick Trick: Command not found means Ruby missing or PATH issue [OK]

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