firstWorkFlow.yml

name: first workflow
env:
 WORKFLOW_VAR: "This variable is declared at the workflow level"

on:
 workflow_dispatch:
jobs:
 firstjob:
   runs-on: ubuntu-latest
   steps:
   - name: firstJob script
     shell: bash 
     run: echo Hello World! This is the first job
   - name: Checkout
     uses: actions/checkout@v4.0.0
   - name: greetings
     id: greetings
     uses: actions/hello-world-javascript-action@main
     with:
      who-to-greet: 'Mona the Octocat'
   - name: time
     run: |
       echo "The time of the greeting was at: ${{ steps.greetings.outputs.time }}"
  
 secondjob:
   runs-on: ubuntu-latest
   needs: firstjob
   env:
     JOB_VAR: " This is a job variable"

   steps:
   - name: secondJob script
     shell: bash
     run: |
      echo this is the second job
      echo and this is a multi-line script

   - name: environment variables
     env:
       STEP_VAR: "This variable is declared at the step level"
     run: |
      echo $WORKFLOW_VAR
      echo $JOB_VAR
      echo $STEP_VAR
      echo "The following is a secret: ${{ secrets.SOME_SECRET }}, of course, I cant tell you because then it wouldnt be a secret..."
      echo "The following are default environment variables:"
      echo $GITHUB_ACTOR
      echo $GITHUB_JOB
      echo $GITHUB_REF