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<div class="line">Sometime it is very useful to see <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-task"><em class="xref std std-term">task</em></a> specific information in <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecflowview"><em class="xref std std-term">ecFlowview</em></a>.</div>
<div class="line">For this we can define a <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-label"><em class="xref std std-term">label</em></a>. A <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-label"><em class="xref std std-term">label</em></a> is a string that is attached to a <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-task"><em class="xref std std-term">task</em></a></div>
<div class="line">and that can be updated using the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-child-command"><em class="xref std std-term">child command</em></a> <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecf-client"><em class="xref std std-term">ecf_client</em></a> –label</div>
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<div class="highlight-python"><pre># Definition of the suite test.
suite test
edit ECF_INCLUDE "$HOME/course"
edit ECF_HOME "$HOME/course"
family f1
edit SLEEP 20
task t1
meter progress 1 100 90
task t2
trigger t1 eq complete
event a
event b
task t3
trigger t2:a
task t4
trigger t2 eq complete
complete t2:b
task t5
trigger t1:progress ge 30
task t6
trigger t1:progress ge 60
task t7
trigger t1:progress ge 90
endfamily
family f2
edit SLEEP 20
task t1
time 00:30 23:30 00:30
task t2
day sunday
task t3
date 01.*.*
time 12:00
task t4
time +00:02
task t5
time 00:02
endfamily
family f3
task t1
label info ""
endfamily
endsuite</pre>
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<p>The following section shows how to add a <a class="reference internal" href="/wiki/display/ECFLOW/ecFlow+Python+Api#ecflow.Label" title="ecflow.Label"><tt class="xref py py-class docutils literal"><span class="pre">ecflow.Label</span></tt></a> in python:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="c">#!/usr/bin/env python2.5</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">ecflow</span>
<span class="k">def</span> <span class="nf">create_family_f3</span><span class="p">():</span>
<span class="n">f3</span> <span class="o">=</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">Family</span><span class="p">(</span><span class="s">"f3"</span><span class="p">)</span>
<span class="n">t1</span> <span class="o">=</span> <span class="n">f3</span><span class="o">.</span><span class="n">add_task</span><span class="p">(</span><span class="s">"t1"</span><span class="p">)</span>
<span class="n">t1</span><span class="o">.</span><span class="n">add_label</span><span class="p">(</span><span class="s">"info"</span><span class="p">,</span><span class="s">""</span><span class="p">);</span>
<span class="k">return</span> <span class="n">f3</span>
<span class="n">defs</span> <span class="o">=</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">Defs</span><span class="p">(</span><span class="s">"test.def"</span><span class="p">)</span>
<span class="n">suite</span> <span class="o">=</span> <span class="n">defs</span><span class="o">.</span><span class="n">add_suite</span><span class="p">(</span><span class="s">"test"</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"ECF_INCLUDE"</span><span class="p">,</span><span class="n">os</span><span class="o">.</span><span class="n">getenv</span><span class="p">(</span><span class="s">"HOME"</span><span class="p">)</span> <span class="o">+</span> <span class="s">"/course"</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"ECF_HOME "</span><span class="p">,</span><span class="n">os</span><span class="o">.</span><span class="n">getenv</span><span class="p">(</span><span class="s">"HOME"</span><span class="p">)</span> <span class="o">+</span> <span class="s">"/course"</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_family</span><span class="p">(</span> <span class="n">create_family_f3</span><span class="p">()</span> <span class="p">)</span>
</pre></div>
</div>
<p>We now need to edit the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecf-script"><em class="xref std std-term">ecf script</em></a> file <tt class="file docutils literal"><span class="pre">$HOME/course/test/f3/t1.ecf</span></tt>:</p>
<div class="highlight-python"><pre>%include <head.h>
n=1
while [[ $n -le 5 ]] # Loop 5 times
do
msg="The date is now $(date)"
ecf_client --label=info "$msg" # Set the label
sleep 60 # Wait a one minute
(( n = $n + 1 ))
done
ecf_client --label info "I have now finished my work."
%include <tail.h></pre>
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<p>What to do:</p>
<ol class="arabic simple">
<li>Modify the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite-definition"><em class="xref std std-term">suite definition</em></a> file or python script</li>
<li>Edit the new <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecf-script"><em class="xref std std-term">ecf script</em></a></li>
<li>Load the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite-definition"><em class="xref std std-term">suite definition</em></a> file and begin the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite"><em class="xref std std-term">suite</em></a></li>
<li>Watch in <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecflowview"><em class="xref std std-term">ecFlowview</em></a></li>
</ol>
</div>
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