simple workflow

wf2.sh

--- Work/data_repos » renku init test-update
Initialized empty project in /home/sam/Work/data_repos/test-update
--- Work/data_repos » cd test-update
--- data_repos/test-update ‹master› » 
--- data_repos/test-update ‹master› » 
--- data_repos/test-update ‹master› » renku run echo "A" > step1
--- data_repos/test-update ‹master› » renku run cat step1 > step2
--- data_repos/test-update ‹master› » renku run cat step2 > step3
--- data_repos/test-update ‹master› » 
--- data_repos/test-update ‹master› » 
--- data_repos/test-update ‹master› » cat step*     
A
A
A
--- data_repos/test-update ‹master› » renku run echo "B" > step1
--- data_repos/test-update ‹master› » cat step*
B
A
A
--- data_repos/test-update ‹master› » renku update step3
Resolved '.renku/workflow/b294ec8ac3284a54b91ddb7218fe1e88.cwl' to 'file:///home/sam/Work/data_repos/test-update/.renku/workflow/b294ec8ac3284a54b91ddb7218fe1e88.cwl'
[workflow ] start
[workflow ] starting step step_1
[step step_1] start
[job step_1] /tmp/tmpdiu7ge1h$ cat \
    /tmp/tmpl3ht6soe/stg3be7b5a3-e160-48e4-8ff3-7fd7c11ad2e2/step2 > /tmp/tmpdiu7ge1h/step3
[job step_1] completed success
[step step_1] completed success
[workflow ] completed success
Unchanged files:

	step3
--- data_repos/test-update ‹master› » cat step*
B
A
A
--- data_repos/test-update ‹master› » renku rerun step3 
Resolved '.renku/workflow/49b87264181f4cdf9a57b9a4ebb28a98.cwl' to 'file:///home/sam/Work/data_repos/test-update/.renku/workflow/49b87264181f4cdf9a57b9a4ebb28a98.cwl'
[workflow ] start
[workflow ] starting step step_2
[step step_2] start
[job step_2] /tmp/tmp91fulw48$ echo \
    A > /tmp/tmp91fulw48/step1
[job step_2] completed success
[step step_2] completed success
[workflow ] starting step step_1
[step step_1] start
[job step_1] /tmp/tmpnde_oaus$ cat \
    /tmp/tmpr97q0gks/stg472b01d8-91af-40f6-a859-a41c7a396726/step1 > /tmp/tmpnde_oaus/step2
[job step_1] completed success
[step step_1] completed success
[workflow ] starting step step_3
[step step_3] start
[job step_3] /tmp/tmp5a7a9ntv$ cat \
    /tmp/tmpbu63cqx4/stgc480bde2-0a03-4fad-ae0b-127914eb2159/step2 > /tmp/tmp5a7a9ntv/step3
[job step_3] completed success
[step step_3] completed success
[workflow ] completed success
Unchanged files:

	step2
	step3
--- data_repos/test-update ‹master› » cat step*
A
A
A