title: How to add Bash or PowerShell script to Azure DevOps pipeline
body: <p>I'm quite new to CI and am experimenting with Azure DevOps.</p>
  
  <p>I want to use an automated testing tool in my CI pipeline that uses either a Bash script and a PowerShell script that's run inside the CI pipeline to trigger the testing tool.</p>
  
  <p>How do I add either the Bash or PowerShell script into my pipeline in Azure DevOps so that the script runs and triggers the testing tool?</p>