diff --git a/bash-refine.sh b/bash-refine.sh
index 19979a7..5348b85 100755
--- a/bash-refine.sh
+++ b/bash-refine.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# bash-refine v1.1.1: bash-refine.sh, Felix Lohmeier, 2020-07-22
+# bash-refine v1.2.1: bash-refine.sh, Felix Lohmeier, 2020-07-31
 # https://gist.github.com/felixlohmeier/d76bd27fbc4b8ab6d683822cdf61f81d
 # license: MIT License https://choosealicense.com/licenses/mit/
 
@@ -7,14 +7,22 @@
 
 # ================================== CONFIG ================================== #
 
-endpoint="http://localhost:3333"
-memory="1400M" # increase to available RAM
+endpoint="${REFINE_ENDPOINT:-http://localhost:3333}"
+memory="${REFINE_MEMORY:-1400M}" # increase to available RAM
 date="$(date +%Y%m%d_%H%M%S)"
-workspace="output/${date}"
-logfile="${workspace}/${date}.log"
-csrf=true # set to false for OpenRefine < 3.3
-jq="jq" # path to executable
-openrefine="openrefine/refine" # path to executable
+if [[ -z "${REFINE_WORKDIR}" ]]; then
+  workdir="output/${date}"
+else
+  workdir="${REFINE_WORKDIR}"
+fi
+if [[ -z "${REFINE_LOGFILE}" ]]; then
+  logfile="${workdir}/${date}.log"
+else
+  logfile="${REFINE_LOGFILE}"
+fi
+csrf="${REFINE_CSRF:-true}" # set to false for OpenRefine < 3.3
+jq="${REFINE_JQ:-jq}" # path to executable
+refine="${REFINE_REFINE:-openrefine/refine}" # path to executable
 
 declare -A checkpoints # associative array for stats
 declare -A pids # associative array for monitoring background jobs
@@ -42,23 +50,23 @@ function requirements {
       "https://github.com/stedolan/jq/releases/download/jq-1.4/jq-linux-x86_64"
     chmod +x "${jq}"; echo
   fi
-  if [[ -z "$(readlink -e "${openrefine}")" ]]; then
+  if [[ -z "$(readlink -e "${refine}")" ]]; then
     echo "Download OpenRefine..."
-    mkdir -p "$(dirname "${openrefine}")"
+    mkdir -p "$(dirname "${refine}")"
     curl -L --output openrefine.tar.gz \
       "https://github.com/OpenRefine/OpenRefine/releases/download/3.3/openrefine-linux-3.3.tar.gz"
-    echo "Install OpenRefine in subdirectory $(dirname "${openrefine}")..."
-    tar -xzf openrefine.tar.gz -C "$(dirname "${openrefine}")" --strip 1 --totals
+    echo "Install OpenRefine in subdirectory $(dirname "${refine}")..."
+    tar -xzf openrefine.tar.gz -C "$(dirname "${refine}")" --strip 1 --totals
     rm -f openrefine.tar.gz
     # do not try to open OpenRefine in browser
     sed -i '$ a JAVA_OPTIONS=-Drefine.headless=true' \
-      "$(dirname "${openrefine}")"/refine.ini
+      "$(dirname "${refine}")"/refine.ini
     # set min java heap space to allocated memory
     sed -i 's/-Xms$REFINE_MIN_MEMORY/-Xms$REFINE_MEMORY/' \
-      "$(dirname "${openrefine}")"/refine
+      "$(dirname "${refine}")"/refine
     # set autosave period from 5 minutes to 25 hours
     sed -i 's/#REFINE_AUTOSAVE_PERIOD=60/REFINE_AUTOSAVE_PERIOD=1500/' \
-      "$(dirname "${openrefine}")"/refine.ini  
+      "$(dirname "${refine}")"/refine.ini  
     echo
   fi
 }
@@ -68,8 +76,8 @@ function requirements {
 function refine_start {
   echo "start OpenRefine server..."  
   local dir
-  dir="$(readlink -f "${workspace}")"
-  ${openrefine} -v warn -m "${memory}" -p "${endpoint##*:}" -d "${dir}" &
+  dir="$(readlink -f "${workdir}")"
+  ${refine} -v warn -m "${memory}" -p "${endpoint##*:}" -d "${dir}" &
   pid_server=${!}
   timeout 30s bash -c "until curl -s \"${endpoint}\" \
     | cat | grep -q -o 'OpenRefine' ; do sleep 1; done" \
@@ -85,7 +93,7 @@ function refine_kill {
   # kill OpenRefine immediately; SIGKILL (kill -9) prevents saving projects
   { kill -9 "${pid_server}" && wait "${pid_server}"; } 2>/dev/null
   # delete temporary OpenRefine projects
-  (cd "${workspace}" && rm -rf ./*.project* && rm -f workspace.json)
+  (cd "${workdir}" && rm -rf ./*.project* && rm -f workspace.json)
 }
 
 function refine_check {
@@ -208,9 +216,9 @@ function checkpoint_stats {
 }
 
 function count_output {
-  # word count on all files in workspace
-  echo "files (number of lines / size in bytes) in ${workspace}..."
-  (cd "${workspace}" && wc -c -l ./*)
+  # word count on all files in workdir
+  echo "files (number of lines / size in bytes) in ${workdir}..."
+  (cd "${workdir}" && wc -c -l ./*)
 }
 
 function init {
@@ -218,6 +226,6 @@ function init {
   requirements
   # set trap, create directories and tee to log file
   trap 'error "script interrupted!"' HUP INT QUIT TERM
-  mkdir -p "${workspace}"
+  mkdir -p "${workdir}"
   exec &> >(tee -i -a "${logfile}")
 }
diff --git a/minimal.sh b/minimal.sh
index a51835f..7253ff7 100755
--- a/minimal.sh
+++ b/minimal.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# bash-refine v1.1.1: minimal.sh, Felix Lohmeier, 2020-07-22
+# bash-refine v1.2.1: minimal.sh, Felix Lohmeier, 2020-07-31
 # https://gist.github.com/felixlohmeier/d76bd27fbc4b8ab6d683822cdf61f81d
 # license: MIT License https://choosealicense.com/licenses/mit/
 
diff --git a/templates.sh b/templates.sh
index ff1ef3c..0fe7294 100755
--- a/templates.sh
+++ b/templates.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# bash-refine v1.1.1: templates.sh, Felix Lohmeier, 2020-07-22
+# bash-refine v1.2.1: templates.sh, Felix Lohmeier, 2020-07-31
 # https://gist.github.com/felixlohmeier/d76bd27fbc4b8ab6d683822cdf61f81d
 # license: MIT License https://choosealicense.com/licenses/mit/
 
@@ -23,13 +23,13 @@ source bash-refine.sh
 #endpoint="http://localhost:3333"
 #memory="1400M" # increase to available RAM
 #date="$(date +%Y%m%d_%H%M%S)"
-#workspace="output/${date}"
-#logfile="${workspace}/${date}.log"
+#workdir="output/${date}"
+#logfile="${workdir}/${date}.log"
 #csrf=true # set to false for OpenRefine < 3.3
 #jq="jq" # path to executable
 #openrefine="openrefine/refine" # path to executable
 
-# check requirements, set trap, create workspace and tee to logfile
+# check requirements, set trap, create workdir and tee to logfile
 init
 
 # ================================= STARTUP ================================== #
@@ -100,7 +100,7 @@ if curl -fs --write-out "%{redirect_url}\n" \
                     "separator": " "
                   }' \
   "${endpoint}/command/core/create-project-from-upload$(refine_csrf)" \
-  > "${workspace}/${p}.id" \
+  > "${workdir}/${p}.id" \
   << "DATA"
 a b c
 1 2 3
@@ -112,7 +112,7 @@ then
 else
   error "import of ${p} failed!"
 fi
-refine_store "${p}" "${workspace}/${p}.id" || error "import of ${p} failed!"
+refine_store "${p}" "${workdir}/${p}.id" || error "import of ${p} failed!"
 echo
 
 # ---------------------------- IMPORT FROM FILE ------------------------------ #
@@ -129,13 +129,13 @@ if curl -fs --write-out "%{redirect_url}\n" \
                     "separator": "\t"
                   }' \
   "${endpoint}/command/core/create-project-from-upload$(refine_csrf)" \
-  > "${workspace}/${p}.id"
+  > "${workdir}/${p}.id"
 then
   log "imported ${projects[$p]} as ${p}"
 else
   error "import of ${projects[$p]} failed!"
 fi
-refine_store "${p}" "${workspace}/${p}.id" || error "import of ${p} failed!"
+refine_store "${p}" "${workdir}/${p}.id" || error "import of ${p} failed!"
 echo
 
 # -------------------- IMPORT MULTIPLE FILES (PARALLEL) ---------------------- #
@@ -154,7 +154,7 @@ for p in "${ps[@]}"; do
                     "separator": ","
                     }' \
     "${endpoint}/command/core/create-project-from-upload$(refine_csrf)" \
-    > "${workspace}/${p}.id"
+    > "${workdir}/${p}.id"
   then
     log "imported ${projects[$p]} as ${p}"
   else
@@ -164,7 +164,7 @@ for p in "${ps[@]}"; do
 done
 monitoring
 for p in "${ps[@]}"; do
-  refine_store "${p}" "${workspace}/${p}.id" || error "import of ${p} failed!"
+  refine_store "${p}" "${workdir}/${p}.id" || error "import of ${p} failed!"
 done
 echo
 
@@ -302,7 +302,7 @@ p="csv file example"
 columns=( "apply-from-file" "apply-from-heredoc" )
 echo "delete columns" "${columns[@]}" "in ${p}..."
 for column in "${columns[@]}"; do
-  cat << JSON >> "${workspace}/${p}.tmp"
+  cat << JSON >> "${workdir}/${p}.tmp"
 [
   {
     "op": "core/column-removal",
@@ -311,13 +311,13 @@ for column in "${columns[@]}"; do
 ]
 JSON
 done
-if "${jq}" -s add "${workspace}/${p}.tmp" | curl -fs \
+if "${jq}" -s add "${workdir}/${p}.tmp" | curl -fs \
   --data project="${projects[$p]}" \
   --data-urlencode operations@- \
   "${endpoint}/command/core/apply-operations$(refine_csrf)" > /dev/null
 then
   log "transformed ${p} (${projects[$p]})"
-  rm "${workspace}/${p}.tmp"
+  rm "${workdir}/${p}.tmp"
 else
   error "transform ${p} (${projects[$p]}) failed!"
 fi
@@ -354,9 +354,9 @@ if curl -fs \
   --data format="${format}" \
   --data engine='{"facets":[],"mode":"row-based"}' \
   "${endpoint}/command/core/export-rows" \
-  > "${workspace}/${p}.${format}"
+  > "${workdir}/${p}.${format}"
 then
-  log "exported ${p} (${projects[$p]}) to ${workspace}/${p}.${format}"
+  log "exported ${p} (${projects[$p]}) to ${workdir}/${p}.${format}"
 else
   error "export of ${p} (${projects[$p]}) failed!"
 fi
@@ -386,9 +386,9 @@ if echo "${template}" | head -c -2 | curl -fs \
   --data engine='{"facets":[],"mode":"row-based"}' \
   --data-urlencode template@- \
   "${endpoint}/command/core/export-rows" \
-  > "${workspace}/${p}.${format}"
+  > "${workdir}/${p}.${format}"
 then
-  log "exported ${p} (${projects[$p]}) to ${workspace}/${p}.${format}"
+  log "exported ${p} (${projects[$p]}) to ${workdir}/${p}.${format}"
 else
   error "export of ${p} (${projects[$p]}) failed!"
 fi
@@ -405,9 +405,9 @@ for p in "${ps[@]}"; do
     --data format="${format}" \
     --data engine='{"facets":[],"mode":"row-based"}' \
     "${endpoint}/command/core/export-rows" \
-    > "${workspace}/${p}.${format}"
+    > "${workdir}/${p}.${format}"
   then
-    log "exported ${p} (${projects[$p]}) to ${workspace}/${p}.${format}"
+    log "exported ${p} (${projects[$p]}) to ${workdir}/${p}.${format}"
   else
     error "export of ${p} (${projects[$p]}) failed!"
   fi) &
@@ -487,7 +487,7 @@ echo
 
 # get operations history and reshape json to make it applicable (requires jq)
 p="csv file example"
-f="${workspace}/${p}_history.json"
+f="${workdir}/${p}_history.json"
 echo "history of operations for ${p}..."
 if curl -fs --get \
   --data project="${projects[$p]}" \
@@ -542,5 +542,5 @@ refine_stop; echo
 # calculate run time based on checkpoints
 checkpoint_stats; echo
 
-# word count on all files in workspace
+# word count on all files in workdir
 count_output