diff --git a/README.md b/README.md
index e86fb65..d0c1416 100644
--- a/README.md
+++ b/README.md
@@ -127,7 +127,6 @@ Please file an [issue](https://github.com/opencultureconsulting/openrefine-task-
 ## To do
 
 - [ ] Codacy badge (needs to be public)
-- [ ] add client log messages to openrefine.log (tee -a)
 - [ ] differentiate examples
   - [ ] example for loading multiple input files by providing a zip archive
   - [ ] example for download "fresh" input data as a dependent task and generating archives/diffs
diff --git a/Taskfile.yml b/Taskfile.yml
index 473383c..fe686ca 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -50,11 +50,11 @@ tasks:
         if [ ! -f "../openrefine/refine" ]; then
           echo 1>&2 "OpenRefine missing; try task install"; exit 1
         fi
-        rm -rf ./*.project* workspace.json
+        rm -rf ./*.project* workspace.json openrefine.log
       - > # launch OpenRefine with specific data directory and redirect its output to a log file
         ../openrefine/refine -v warn -p {{.PORT}} -m {{.RAM}}
         -d ../{{.PROJECT}}
-        > openrefine.log 2>&1 &
+        >> openrefine.log 2>&1 &
       - | # wait until OpenRefine API is available
         timeout 30s bash -c "until
           wget -q -O - http://localhost:{{.PORT}} | cat | grep -q -o OpenRefine
diff --git a/example-doaj/Taskfile.yml b/example-doaj/Taskfile.yml
index c47dae6..a03ede8 100644
--- a/example-doaj/Taskfile.yml
+++ b/example-doaj/Taskfile.yml
@@ -23,17 +23,22 @@ tasks:
         ../openrefine/client -P {{.PORT}}
         --create "$(readlink -m input/doaj-article-sample.csv)"
         --projectName {{.PROJECT}}
+        > >(tee -a openrefine.log) 2>&1
       - > # apply transformation rules
         ../openrefine/client -P {{.PORT}} {{.PROJECT}}
         --apply config/doaj-openrefine.json
+        > >(tee -a openrefine.log) 2>&1
       - > # export to file
         mkdir -p output &&
         ../openrefine/client -P {{.PORT}} {{.PROJECT}}
         --output "$(readlink -m output/doaj-results.tsv)"
+        > >(tee -a openrefine.log) 2>&1
       - | # print allocated system resources
         PID="$(lsof -t -i:{{.PORT}})"
-        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM"
-        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time"
+        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM" \
+          > >(tee -a openrefine.log)
+        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time" \
+          > >(tee -a openrefine.log)
       - task: :stop # shut down OpenRefine and archive the OpenRefine project
         vars: {PROJECT: '{{.PROJECT}}', PORT: '{{.PORT}}'}
     sources:
diff --git a/example-duplicates/Taskfile.yml b/example-duplicates/Taskfile.yml
index 9016234..ae838c5 100644
--- a/example-duplicates/Taskfile.yml
+++ b/example-duplicates/Taskfile.yml
@@ -22,17 +22,22 @@ tasks:
         --create "$(readlink -m input/duplicates.csv)"
         --encoding UTF-8
         --projectName {{.PROJECT}}
+        > >(tee -a openrefine.log) 2>&1
       - > # apply transformation rules
         ../openrefine/client -P {{.PORT}} {{.PROJECT}}
         --apply config/duplicates-deletion.json
+        > >(tee -a openrefine.log) 2>&1
       - > # export to file
         mkdir -p output &&
         ../openrefine/client -P {{.PORT}} {{.PROJECT}}
         --output "$(readlink -m output/deduped.xls)"
+        > >(tee -a openrefine.log) 2>&1
       - | # print allocated system resources
         PID="$(lsof -t -i:{{.PORT}})"
-        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM"
-        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time"
+        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM" \
+          > >(tee -a openrefine.log)
+        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time" \
+          > >(tee -a openrefine.log)
       - task: :stop # shut down OpenRefine and archive the OpenRefine project
         vars: {PROJECT: '{{.PROJECT}}', PORT: '{{.PORT}}'}
     sources:
diff --git a/example-powerhouse/Taskfile.yml b/example-powerhouse/Taskfile.yml
index ffcb044..ba528a7 100644
--- a/example-powerhouse/Taskfile.yml
+++ b/example-powerhouse/Taskfile.yml
@@ -25,17 +25,22 @@ tasks:
         --processQuotes false
         --guessCellValueTypes true
         --projectName {{.PROJECT}}
+        > >(tee -a openrefine.log) 2>&1
       - > # apply transformation rules
         ../openrefine/client -P {{.PORT}} {{.PROJECT}}
         --apply config/phm-transform.json
+        > >(tee -a openrefine.log) 2>&1
       - > # export to file
         mkdir -p output &&
         ../openrefine/client -P {{.PORT}} {{.PROJECT}}
         --output "$(readlink -m output/phm-results.tsv)"
+        > >(tee -a openrefine.log) 2>&1
       - | # print allocated system resources
         PID="$(lsof -t -i:{{.PORT}})"
-        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM"
-        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time"
+        echo "used $(($(ps --no-headers -o rss -p "$PID") / 1024)) MB RAM" \
+          > >(tee -a openrefine.log)
+        echo "used $(ps --no-headers -o cputime -p "$PID") CPU time" \
+          > >(tee -a openrefine.log)
       - task: :stop # shut down OpenRefine and archive the OpenRefine project
         vars: {PROJECT: '{{.PROJECT}}', PORT: '{{.PORT}}'}
     sources: