my_first_workflow.yml

name: Shell commands
on: [push]
jobs:
  run-shell-command:
    runs-on: ${{ matrix.os }}
    strategy:
    matrix:
    os: [ubuntu-latest, ubuntu-20.04]
  steps:
	- name: echo a string
	  run: echo "Hello World"
	- name: multiline scritp
	  run: |
		python3 -V
		touch my_file_with_workflow.py
		ls -l