cwltool --print-rdf https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main /home/stain/bin/cwltool 1.0.20161207161158

hello.cwl.yaml

#!/usr/bin/env cwl-runner

cwlVersion: v1.0
$graph:
- id: echocmd
  class: CommandLineTool
  inputs:
    echo-in:
      type: string
      label: "Message"
      doc: "The message to print"
      default: "Hello World"
      inputBinding: {}
  outputs:
    echo-out:
      type: stdout
      label: "Printed Message"
      doc: "The file containing the message"
  baseCommand: echo
  stdout: messageout.txt

- id: main
  class: Workflow
  label: "Hello World"
  doc: "Puts a message into a file using echo"
  inputs: []
  outputs:
    output:
      type: File
      outputSource: step0/echo-out
  steps:
    step0:
      run: "#echocmd"
      in: []
      out: [echo-out]

hello.ttl

@prefix CommandLineBinding: <https://w3id.org/cwl/cwl#CommandLineBinding/> .
@prefix CommandLineTool: <https://w3id.org/cwl/cwl#CommandLineTool/> .
@prefix CommandOutputBinding: <https://w3id.org/cwl/cwl#CommandOutputBinding/> .
@prefix Dirent: <https://w3id.org/cwl/cwl#Dirent/> .
@prefix DockerRequirement: <https://w3id.org/cwl/cwl#DockerRequirement/> .
@prefix EnvVarRequirement: <https://w3id.org/cwl/cwl#EnvVarRequirement/> .
@prefix EnvironmentDef: <https://w3id.org/cwl/cwl#EnvironmentDef/> .
@prefix ExpressionTool: <https://w3id.org/cwl/cwl#ExpressionTool/> .
@prefix File: <https://w3id.org/cwl/cwl#File/> .
@prefix InlineJavascriptRequirement: <https://w3id.org/cwl/cwl#InlineJavascriptRequirement/> .
@prefix LinkMergeMethod: <https://w3id.org/cwl/cwl#LinkMergeMethod/> .
@prefix Parameter: <https://w3id.org/cwl/cwl#Parameter/> .
@prefix ResourceRequirement: <https://w3id.org/cwl/cwl#ResourceRequirement/> .
@prefix ScatterMethod: <https://w3id.org/cwl/cwl#ScatterMethod/> .
@prefix SchemaDefRequirement: <https://w3id.org/cwl/cwl#SchemaDefRequirement/> .
@prefix SoftwarePackage: <https://w3id.org/cwl/cwl#SoftwarePackage/> .
@prefix SoftwareRequirement: <https://w3id.org/cwl/cwl#SoftwareRequirement/> .
@prefix Workflow: <https://w3id.org/cwl/cwl#Workflow/> .
@prefix cwl: <https://w3id.org/cwl/cwl#> .
@prefix ns1: <rdfs:> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sld: <https://w3id.org/cwl/salad#> .
@prefix xml: <http://www.w3.org/XML/1998/namespace> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main> a cwl:Workflow ;
    Workflow:steps <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main/step0> ;
    cwl:outputs <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main/output> ;
    ns1:comment "Puts a message into a file using echo" ;
    ns1:label "Hello World" .

<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#echocmd> a cwl:CommandLineTool ;
    cwl:baseCommand ( "echo" ) ;
    cwl:inputs <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#echocmd/echo-in> ;
    cwl:outputs <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#echocmd/echo-out> ;
    cwl:stdout "messageout.txt" .

<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#echocmd/echo-in> cwl:default "Hello World" ;
    cwl:inputBinding [ ] ;
    sld:type xsd:string ;
    ns1:comment "The message to print" ;
    ns1:label "Message" .

<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#echocmd/echo-out> cwl:outputBinding [ CommandOutputBinding:glob "messageout.txt" ] ;
    sld:type cwl:File ;
    ns1:comment "The file containing the message" ;
    ns1:label "Printed Message" .

<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main/output> cwl:outputSource <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main/step0/echo-out> ;
    sld:type cwl:File .

<https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main/step0> cwl:out <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#main/step0/echo-out> ;
    cwl:run <https://raw.githubusercontent.com/common-workflow-language/workflows/master/workflows/hello/hello.cwl#echocmd> .