First job in Jenkins failed with command not found

First job created followed by How to Create a New Build Job in Jenkins Freestyle Project, failed with:
Running as SYSTEM
Building in workspace /var/lib/jenkins/workspace/Hello World
[Hello World] $ /bin/sh -xe /tmp/

  • hello world
    /tmp/ line 2: hello: command not found
    Build step ‘Execute shell’ marked build as failure
    Finished: FAILURE

There is no command named hello available in the path on that agent. Usually, the command to run would be echo hello world rather than hello world.

Oh, my bad. made mistake, fixed. Thank you.