diff --git a/src/auditor/test-revocation.sh b/src/auditor/test-revocation.sh
index a1f0ab1a9..47b39975d 100755
--- a/src/auditor/test-revocation.sh
+++ b/src/auditor/test-revocation.sh
@@ -19,13 +19,15 @@
 #
 # Check that the auditor report is as expected.
 #
+# shellcheck disable=SC2317
+#
 # Requires 'jq' tool and Postgres superuser rights!
 set -eu
 # set -x
 
 # Set of numbers for all the testcases.
 # When adding new tests, increase the last number:
-ALL_TESTS=`seq 0 4`
+ALL_TESTS=$(seq 0 4)
 
 # $TESTS determines which tests we should run.
 # This construction is used to make it easy to
@@ -42,6 +44,7 @@ TESTS=${1:-$ALL_TESTS}
 # Global variable to run the auditor processes under valgrind
 # VALGRIND=valgrind
 VALGRIND=""
+LOGLEVEL="INFO"
 
 # Exit, with status code "skip" (no 'real' failure)
 function exit_skip() {
@@ -58,21 +61,21 @@ function exit_fail() {
 function stop_libeufin()
 {
     echo "killing libeufin..."
-    if test -f ${MYDIR:-/}/libeufin-sandbox.pid
+    if test -f "${MYDIR:-/}/libeufin-sandbox.pid"
     then
         echo "Killing libeufin sandbox"
-        PID=`cat ${MYDIR}/libeufin-sandbox.pid 2> /dev/null`
-        rm ${MYDIR}/libeufin-sandbox.pid
-        kill $PID 2> /dev/null || true
-        wait $PID || true
+        PID=$(cat "${MYDIR}/libeufin-sandbox.pid" 2> /dev/null)
+        rm "${MYDIR}/libeufin-sandbox.pid"
+        kill "$PID" 2> /dev/null || true
+        wait "$PID" || true
     fi
-    if test -f ${MYDIR:-/}/libeufin-nexus.pid
+    if test -f "${MYDIR:-/}/libeufin-nexus.pid"
     then
         echo "Killing libeufin nexus"
-        PID=`cat ${MYDIR}/libeufin-nexus.pid 2> /dev/null`
-        rm ${MYDIR}/libeufin-nexus.pid
-        kill $PID 2> /dev/null || true
-        wait $PID || true
+        PID=$(cat "${MYDIR}/libeufin-nexus.pid" 2> /dev/null)
+        rm "${MYDIR}/libeufin-nexus.pid"
+        kill "$PID" 2> /dev/null || true
+        wait "$PID" || true
     fi
     echo "killing libeufin DONE"
 }
@@ -84,8 +87,8 @@ function cleanup()
     if test ! -z "${EPID:-}"
     then
         echo -n "Stopping exchange $EPID..."
-        kill -TERM $EPID
-        wait $EPID
+        kill -TERM "$EPID"
+        wait "$EPID"
         echo " DONE"
         unset EPID
     fi
@@ -99,12 +102,17 @@ function exit_cleanup()
     if test ! -z "${POSTGRES_PATH:-}"
     then
         echo "Stopping Postgres at ${POSTGRES_PATH}"
-        ${POSTGRES_PATH}/pg_ctl -D $TMPDIR -l /dev/null stop &> /dev/null || true
+        "${POSTGRES_PATH}/pg_ctl" \
+            -D "$TMPDIR" \
+            -l /dev/null \
+            stop \
+            &> /dev/null \
+            || true
     fi
     cleanup
-    for n in `jobs -p`
+    for n in $(jobs -p)
     do
-        kill $n 2> /dev/null || true
+        kill "$n" 2> /dev/null || true
     done
     wait
     echo "DONE"
@@ -119,7 +127,9 @@ function nexus_fetch_transactions () {
     export LIBEUFIN_NEXUS_PASSWORD=x
     export LIBEUFIN_NEXUS_URL=http://localhost:8082/
     libeufin-cli accounts fetch-transactions \
-                 --range-type since-last --level report exchange-nexus > /dev/null
+                 --range-type since-last \
+                 --level report \
+                 exchange-nexus > /dev/null
     unset LIBEUFIN_NEXUS_USERNAME
     unset LIBEUFIN_NEXUS_PASSWORD
     unset LIBEUFIN_NEXUS_URL
@@ -141,66 +151,90 @@ function get_payto_uri() {
     export LIBEUFIN_SANDBOX_USERNAME=$1
     export LIBEUFIN_SANDBOX_PASSWORD=$2
     export LIBEUFIN_SANDBOX_URL=http://localhost:18082
-    libeufin-cli sandbox demobank info --bank-account $1 | jq --raw-output '.paytoUri'
+    libeufin-cli sandbox demobank info \
+                 --bank-account "$1" \
+        | jq --raw-output '.paytoUri'
 }
 
 function launch_libeufin () {
     export LIBEUFIN_NEXUS_DB_CONNECTION="jdbc:sqlite:${DB}-nexus.sqlite3"
-    cd $MYDIR
-    libeufin-nexus serve --port 8082 \
-                   2> ${MYDIR}/libeufin-nexus-stderr.log \
-                   > ${MYDIR}/libeufin-nexus-stdout.log &
-    echo $! > ${MYDIR}/libeufin-nexus.pid
+    libeufin-nexus serve \
+                   --port 8082 \
+                   2> "${MYDIR}/libeufin-nexus-stderr.log" \
+                   > "${MYDIR}/libeufin-nexus-stdout.log" &
+    echo $! > "${MYDIR}/libeufin-nexus.pid"
     export LIBEUFIN_SANDBOX_DB_CONNECTION="jdbc:sqlite:${DB}-sandbox.sqlite3"
-    libeufin-sandbox serve --no-auth --port 18082 \
-                     > ${MYDIR}/libeufin-sandbox-stdout.log \
-                     2> ${MYDIR}/libeufin-sandbox-stderr.log &
-    echo $! > ${MYDIR}/libeufin-sandbox.pid
-    cd $ORIGIN
+    libeufin-sandbox serve \
+                     --no-auth \
+                     --port 18082 \
+                     > "${MYDIR}/libeufin-sandbox-stdout.log" \
+                     2> "${MYDIR}/libeufin-sandbox-stderr.log" &
+    echo $! > "${MYDIR}/libeufin-sandbox.pid"
 }
 
 # Operations to run before the actual audit
 function pre_audit () {
     # Launch bank
     echo -n "Launching bank "
-    EXCHANGE_URL=`taler-config -c $CONF -s EXCHANGE -o BASE_URL`
     launch_libeufin
-    for n in `seq 1 80`
+    for n in $(seq 1 80)
     do
         echo -n "."
         sleep 0.1
         OK=1
-        wget http://localhost:18082/ -o /dev/null -O /dev/null >/dev/null && break
+        wget http://localhost:18082/ \
+             -o /dev/null \
+             -O /dev/null \
+             >/dev/null && break
         OK=0
     done
-    if [ 1 != $OK ]
+    if [ 1 != "$OK" ]
     then
         exit_skip "Failed to launch Sandbox"
     fi
-    for n in `seq 1 80`
+    for n in $(seq 1 80)
     do
         echo -n "."
         sleep 0.1
         OK=1
-        wget http://localhost:8082/ -o /dev/null -O /dev/null >/dev/null && break
+        wget http://localhost:8082/ \
+             -o /dev/null \
+             -O /dev/null \
+             >/dev/null && break
         OK=0
     done
-    if [ 1 != $OK ]
+    if [ 1 != "$OK" ]
     then
         exit_skip "Failed to launch Nexus"
     fi
     echo " DONE"
-    if test ${1:-no} = "aggregator"
+    if [ "${1:-no}" = "aggregator" ]
     then
         export CONF
 	    echo -n "Running exchange aggregator ... (config: $CONF)"
-        taler-exchange-aggregator -L INFO -t -c $CONF -y 2> ${MYDIR}/aggregator.log || exit_fail "FAIL"
+        taler-exchange-aggregator \
+            -L "$LOGLEVEL" \
+            -t \
+            -c "$CONF" \
+            -y \
+            2> "${MYDIR}/aggregator.log" \
+            || exit_fail "FAIL"
         echo " DONE"
         echo -n "Running exchange closer ..."
-        taler-exchange-closer -L INFO -t -c $CONF 2> ${MYDIR}/closer.log || exit_fail "FAIL"
+        taler-exchange-closer \
+            -L "$LOGLEVEL" \
+            -t \
+            -c "$CONF" \
+            2> "${MYDIR}/closer.log" \
+            || exit_fail "FAIL"
         echo " DONE"
         echo -n "Running exchange transfer ..."
-        taler-exchange-transfer -L INFO -t -c $CONF 2> ${MYDIR}/transfer.log || exit_fail "FAIL"
+        taler-exchange-transfer \
+            -L "$LOGLEVEL" \
+            -t \
+            -c "$CONF" \
+            2> "${MYDIR}/transfer.log" \
+            || exit_fail "FAIL"
         echo " DONE"
 	    echo -n "Running Nexus payment submitter ..."
 	    nexus_submit_to_sandbox
@@ -218,28 +252,93 @@ function audit_only () {
     echo -n "Running audit(s) ... (conf is $CONF)"
 
     # Restart so that first run is always fresh, and second one is incremental
-    taler-auditor-dbinit -r -c $CONF
-    $VALGRIND taler-helper-auditor-aggregation -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-aggregation.json 2> test-audit-aggregation.log || exit_fail "aggregation audit failed"
+    taler-auditor-dbinit \
+        -r \
+        -c "$CONF"
+    $VALGRIND taler-helper-auditor-aggregation \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-aggregation.json \
+              2> test-audit-aggregation.log \
+        || exit_fail "aggregation audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-aggregation -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-aggregation-inc.json 2> test-audit-aggregation-inc.log || exit_fail "incremental aggregation audit failed"
+    $VALGRIND taler-helper-auditor-aggregation \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-aggregation-inc.json \
+              2> test-audit-aggregation-inc.log \
+        || exit_fail "incremental aggregation audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-coins -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-coins.json 2> test-audit-coins.log || exit_fail "coin audit failed"
+    $VALGRIND taler-helper-auditor-coins \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-coins.json \
+              2> test-audit-coins.log \
+        || exit_fail "coin audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-coins -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-coins-inc.json 2> test-audit-coins-inc.log || exit_fail "incremental coin audit failed"
+    $VALGRIND taler-helper-auditor-coins \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-coins-inc.json \
+              2> test-audit-coins-inc.log \
+        || exit_fail "incremental coin audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-deposits -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-deposits.json 2> test-audit-deposits.log || exit_fail "deposits audit failed"
+    $VALGRIND taler-helper-auditor-deposits \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-deposits.json \
+              2> test-audit-deposits.log \
+        || exit_fail "deposits audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-deposits -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-deposits-inc.json 2> test-audit-deposits-inc.log || exit_fail "incremental deposits audit failed"
+    $VALGRIND taler-helper-auditor-deposits \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-deposits-inc.json \
+              2> test-audit-deposits-inc.log \
+        || exit_fail "incremental deposits audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-reserves -i -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-reserves.json 2> test-audit-reserves.log || exit_fail "reserves audit failed"
+    $VALGRIND taler-helper-auditor-reserves \
+              -i \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-reserves.json \
+              2> test-audit-reserves.log \
+        || exit_fail "reserves audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-reserves -i -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-reserves-inc.json 2> test-audit-reserves-inc.log || exit_fail "incremental reserves audit failed"
+    $VALGRIND taler-helper-auditor-reserves \
+              -i \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-reserves-inc.json \
+              2> test-audit-reserves-inc.log \
+        || exit_fail "incremental reserves audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-wire -i -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-wire.json 2> test-wire-audit.log || exit_fail "wire audit failed"
+    $VALGRIND taler-helper-auditor-wire \
+              -i \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-wire.json \
+              2> test-wire-audit.log \
+        || exit_fail "wire audit failed"
     echo -n "."
-    $VALGRIND taler-helper-auditor-wire -i -L DEBUG -c $CONF -m $MASTER_PUB > test-audit-wire-inc.json 2> test-wire-audit-inc.log || exit_fail "wire audit failed"
+    $VALGRIND taler-helper-auditor-wire \
+              -i \
+              -L "$LOGLEVEL" \
+              -c "$CONF" \
+              -m "$MASTER_PUB" \
+              > test-audit-wire-inc.json \
+              2> test-wire-audit-inc.log \
+        || exit_fail "wire audit failed"
     echo -n "."
-
     echo " DONE"
 }
 
@@ -248,12 +347,22 @@ function audit_only () {
 function post_audit () {
     cleanup
     echo -n "TeXing ."
-    taler-helper-auditor-render.py test-audit-aggregation.json test-audit-coins.json test-audit-deposits.json test-audit-reserves.json test-audit-wire.json < ../../contrib/auditor-report.tex.j2 > test-report.tex || exit_fail "Renderer failed"
-
+    taler-helper-auditor-render.py \
+        test-audit-aggregation.json \
+        test-audit-coins.json \
+        test-audit-deposits.json \
+        test-audit-reserves.json \
+        test-audit-wire.json \
+        < ../../contrib/auditor-report.tex.j2 \
+        > test-report.tex \
+        || exit_fail "Renderer failed"
     echo -n "."
-    timeout 10 pdflatex test-report.tex >/dev/null || exit_fail "pdflatex failed"
+    timeout 10 pdflatex test-report.tex \
+            >/dev/null \
+        || exit_fail "pdflatex failed"
     echo -n "."
-    timeout 10 pdflatex test-report.tex >/dev/null
+    timeout 10 pdflatex test-report.tex \
+            >/dev/null
     echo " DONE"
 }
 
@@ -263,10 +372,9 @@ function post_audit () {
 # $ taler-exchange-aggregator
 # before auditor (to trigger pending wire transfers).
 function run_audit () {
-    pre_audit ${1:-no}
+    pre_audit "${1:-no}"
     audit_only
     post_audit
-
 }
 
 
@@ -274,35 +382,21 @@ function run_audit () {
 function full_reload()
 {
     echo -n "Doing full reload of the database... "
-    dropdb $DB 2> /dev/null || true
-    createdb -T template0 $DB || exit_skip "could not create database $DB (at $PGHOST)"
+    dropdb "$DB" 2> /dev/null || true
+    createdb -T template0 "$DB" \
+        || exit_skip "could not create database $DB (at $PGHOST)"
     # Import pre-generated database, -q(ietly) using single (-1) transaction
-    psql -Aqt $DB -q -1 -f ${BASEDB}.sql > /dev/null || exit_skip "Failed to load database $DB from ${BASEDB}.sql"
+    psql -Aqt "$DB" \
+         -q \
+         -1 \
+         -f "${BASEDB}.sql" \
+         > /dev/null \
+        || exit_skip "Failed to load database $DB from ${BASEDB}.sql"
     echo "DONE"
-    cd $MYDIR
-    rm -f ${DB}-nexus.sqlite3 ${DB}-sandbox.sqlite3 || true # libeufin
-    echo "Loading libeufin Nexus basedb: ${BASEDB}-libeufin-nexus.sql"
-    sqlite3 ${DB}-nexus.sqlite3 < ${BASEDB}-libeufin-nexus.sql || exit_skip "Failed to load Nexus database"
-    echo "DONE"
-    echo "Loading libeufin Sandbox basedb: ${BASEDB}-libeufin-nexus.sql"
-    sqlite3 ${DB}-sandbox.sqlite3 < ${BASEDB}-libeufin-sandbox.sql || exit_skip "Failed to load Sandbox database"
-    echo "DONE"
-    # Exchange payto URI contains the (dynamically generated)
-    # IBAN, that can only be written in CONF after libeufin is
-    # setup.
-    taler-config -c $CONF -s exchange-account-1 -o PAYTO_URI &> /dev/null || (
-        echo -n "Specifying exchange payto URI in the configuration ($CONF) (grab IBAN from ${DB}-sandbox.sqlite3)...";
-        EXCHANGE_IBAN=`echo "SELECT iban FROM BankAccounts WHERE label='exchange'" | sqlite3 ${DB}-sandbox.sqlite3`;
-        taler-config -c $CONF -s exchange-account-1 -o PAYTO_URI \
-                     -V "payto://iban/SANDBOXX/$EXCHANGE_IBAN?receiver-name=Exchange+Company"
-        echo " DONE"
-    )
-    cd $ORIGIN
 }
 
 
 function test_0() {
-
     echo "===========0: normal run with aggregator==========="
     run_audit aggregator
 
@@ -331,94 +425,105 @@ function test_0() {
 
     echo PASS
 
-    LOSS=`jq -r .total_bad_sig_loss < test-audit-aggregation.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_bad_sig_loss < test-audit-aggregation.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong total bad sig loss from aggregation, got unexpected loss of $LOSS"
     fi
-    LOSS=`jq -r .irregular_loss < test-audit-coins.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .irregular_loss < test-audit-coins.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong total bad sig loss from coins, got unexpected loss of $LOSS"
     fi
-    LOSS=`jq -r .total_bad_sig_loss < test-audit-reserves.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_bad_sig_loss < test-audit-reserves.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong total bad sig loss from reserves, got unexpected loss of $LOSS"
     fi
 
     echo -n "Test for wire amounts... "
-    WIRED=`jq -r .total_wire_in_delta_plus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_in_delta_plus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta plus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_wire_in_delta_minus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_in_delta_minus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta minus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_wire_out_delta_plus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_out_delta_plus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta plus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_wire_out_delta_minus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_out_delta_minus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta minus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_misattribution_in < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_misattribution_in < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total misattribution in wrong, got $WIRED"
     fi
-    echo PASS
+    echo "PASS"
 
     echo -n "Checking for unexpected arithmetic differences "
-    LOSS=`jq -r .total_arithmetic_delta_plus < test-audit-aggregation.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_arithmetic_delta_plus < test-audit-aggregation.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong arithmetic delta from aggregations, got unexpected plus of $LOSS"
     fi
-    LOSS=`jq -r .total_arithmetic_delta_minus < test-audit-aggregation.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_arithmetic_delta_minus < test-audit-aggregation.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong arithmetic delta from aggregation, got unexpected minus of $LOSS"
     fi
-    LOSS=`jq -r .total_arithmetic_delta_plus < test-audit-coins.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_arithmetic_delta_plus < test-audit-coins.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong arithmetic delta from coins, got unexpected plus of $LOSS"
     fi
-    LOSS=`jq -r .total_arithmetic_delta_minus < test-audit-coins.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_arithmetic_delta_minus < test-audit-coins.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong arithmetic delta from coins, got unexpected minus of $LOSS"
     fi
-    LOSS=`jq -r .total_arithmetic_delta_plus < test-audit-reserves.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_arithmetic_delta_plus < test-audit-reserves.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong arithmetic delta from reserves, got unexpected plus of $LOSS"
     fi
-    LOSS=`jq -r .total_arithmetic_delta_minus < test-audit-reserves.json`
-    if test $LOSS != "TESTKUDOS:0"
+    LOSS=$(jq -r .total_arithmetic_delta_minus < test-audit-reserves.json)
+    if [ "$LOSS" != "TESTKUDOS:0" ]
     then
         exit_fail "Wrong arithmetic delta from reserves, got unexpected minus of $LOSS"
     fi
 
-    jq -e .amount_arithmetic_inconsistencies[0] < test-audit-aggregation.json > /dev/null && exit_fail "Unexpected arithmetic inconsistencies from aggregations detected in ordinary run"
-    jq -e .amount_arithmetic_inconsistencies[0] < test-audit-coins.json > /dev/null && exit_fail "Unexpected arithmetic inconsistencies from coins detected in ordinary run"
-    jq -e .amount_arithmetic_inconsistencies[0] < test-audit-reserves.json > /dev/null && exit_fail "Unexpected arithmetic inconsistencies from reserves detected in ordinary run"
-    echo PASS
+    jq -e .amount_arithmetic_inconsistencies[0] \
+       < test-audit-aggregation.json \
+       > /dev/null \
+        && exit_fail "Unexpected arithmetic inconsistencies from aggregations detected in ordinary run"
+    jq -e .amount_arithmetic_inconsistencies[0] \
+       < test-audit-coins.json \
+       > /dev/null \
+        && exit_fail "Unexpected arithmetic inconsistencies from coins detected in ordinary run"
+    jq -e .amount_arithmetic_inconsistencies[0] \
+       < test-audit-reserves.json \
+       > /dev/null \
+        && exit_fail "Unexpected arithmetic inconsistencies from reserves detected in ordinary run"
+    echo "PASS"
 
     echo -n "Checking for unexpected wire out differences "
-    jq -e .wire_out_inconsistencies[0] < test-audit-aggregation.json > /dev/null && exit_fail "Unexpected wire out inconsistencies detected in ordinary run"
-    echo PASS
+    jq -e .wire_out_inconsistencies[0] \
+       < test-audit-aggregation.json \
+       > /dev/null \
+        && exit_fail "Unexpected wire out inconsistencies detected in ordinary run"
+    echo "PASS"
 
     # cannot easily undo aggregator, hence full reload
     full_reload
-
 }
 
 
@@ -432,46 +537,72 @@ function test_1() {
     echo "Checking output"
     # if an emergency was detected, that is a bug and we should fail
     echo -n "Test for emergencies... "
-    jq -e .emergencies[0] < test-audit-coins.json > /dev/null && exit_fail "Unexpected emergency detected in ordinary run" || echo PASS
+    jq -e .emergencies[0] \
+       < test-audit-coins.json \
+       > /dev/null \
+        && exit_fail "Unexpected emergency detected in ordinary run" \
+        || echo "PASS"
     echo -n "Test for emergencies by count... "
-    jq -e .emergencies_by_count[0] < test-audit-coins.json > /dev/null && exit_fail "Unexpected emergency by count detected in ordinary run" || echo PASS
+    jq -e .emergencies_by_count[0] \
+       < test-audit-coins.json \
+       > /dev/null \
+        && exit_fail "Unexpected emergency by count detected in ordinary run" \
+        || echo "PASS"
 
     echo -n "Test for wire inconsistencies... "
-    jq -e .wire_out_amount_inconsistencies[0] < test-audit-wire.json > /dev/null && exit_fail "Unexpected wire out inconsistency detected in ordinary run"
-    jq -e .reserve_in_amount_inconsistencies[0] < test-audit-wire.json > /dev/null && exit_fail "Unexpected reserve in inconsistency detected in ordinary run"
-    jq -e .misattribution_inconsistencies[0] < test-audit-wire.json > /dev/null && exit_fail "Unexpected misattribution inconsistency detected in ordinary run"
-    jq -e .row_inconsistencies[0] < test-audit-wire.json > /dev/null && exit_fail "Unexpected row inconsistency detected in ordinary run"
-    jq -e .row_minor_inconsistencies[0] < test-audit-wire.json > /dev/null && exit_fail "Unexpected minor row inconsistency detected in ordinary run"
-    jq -e .wire_format_inconsistencies[0] < test-audit-wire.json > /dev/null && exit_fail "Unexpected wire format inconsistencies detected in ordinary run"
+    jq -e .wire_out_amount_inconsistencies[0] \
+       < test-audit-wire.json \
+       > /dev/null \
+        && exit_fail "Unexpected wire out inconsistency detected in ordinary run"
+    jq -e .reserve_in_amount_inconsistencies[0] \
+       < test-audit-wire.json \
+       > /dev/null \
+        && exit_fail "Unexpected reserve in inconsistency detected in ordinary run"
+    jq -e .misattribution_inconsistencies[0] \
+       < test-audit-wire.json \
+       > /dev/null \
+        && exit_fail "Unexpected misattribution inconsistency detected in ordinary run"
+    jq -e .row_inconsistencies[0] \
+       < test-audit-wire.json \
+       > /dev/null \
+        && exit_fail "Unexpected row inconsistency detected in ordinary run"
+    jq -e .row_minor_inconsistencies[0] \
+       < test-audit-wire.json \
+       > /dev/null \
+        && exit_fail "Unexpected minor row inconsistency detected in ordinary run"
+    jq -e .wire_format_inconsistencies[0] \
+       < test-audit-wire.json \
+       > /dev/null \
+        && exit_fail "Unexpected wire format inconsistencies detected in ordinary run"
 
     # TODO: check operation balances are correct (once we have all transaction types and wallet is deterministic)
     # TODO: check revenue summaries are correct (once we have all transaction types and wallet is deterministic)
 
-    echo PASS
+    echo "PASS"
 
     echo -n "Test for wire amounts... "
-    WIRED=`jq -r .total_wire_in_delta_plus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_in_delta_plus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta plus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_wire_in_delta_minus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_in_delta_minus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta minus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_wire_out_delta_plus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_out_delta_plus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta plus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_wire_out_delta_minus < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_wire_out_delta_minus < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total wire delta minus wrong, got $WIRED"
     fi
-    WIRED=`jq -r .total_misattribution_in < test-audit-wire.json`
-    if test $WIRED != "TESTKUDOS:0"
+    WIRED=$(jq -r .total_misattribution_in < test-audit-wire.json)
+    if [ "$WIRED" != "TESTKUDOS:0" ]
     then
         exit_fail "Expected total misattribution in wrong, got $WIRED"
     fi
@@ -486,37 +617,37 @@ function test_1() {
 function test_2() {
 
     echo "===========2: recoup amount inconsistency==========="
-    echo "UPDATE exchange.recoup SET amount_val=5 WHERE recoup_uuid=1" | psql -Aqt $DB
+    echo "UPDATE exchange.recoup SET amount_val=5 WHERE recoup_uuid=1" | psql -Aqt "$DB"
 
     run_audit
 
     # Reserve balance is now wrong
     echo -n "Testing inconsistency detection... "
-    AMOUNT=`jq -r .reserve_balance_summary_wrong_inconsistencies[0].auditor < test-audit-reserves.json`
-    if test $AMOUNT != "TESTKUDOS:3"
+    AMOUNT=$(jq -r .reserve_balance_summary_wrong_inconsistencies[0].auditor < test-audit-reserves.json)
+    if [ "$AMOUNT" != "TESTKUDOS:3" ]
     then
         exit_fail "Reserve auditor amount $AMOUNT is wrong"
     fi
-    AMOUNT=`jq -r .reserve_balance_summary_wrong_inconsistencies[0].exchange < test-audit-reserves.json`
-    if test $AMOUNT != "TESTKUDOS:0"
+    AMOUNT=$(jq -r .reserve_balance_summary_wrong_inconsistencies[0].exchange < test-audit-reserves.json)
+    if [ "$AMOUNT" != "TESTKUDOS:0" ]
     then
         exit_fail "Reserve exchange amount $AMOUNT is wrong"
     fi
     # Coin spent exceeded coin's value
-    AMOUNT=`jq -r .amount_arithmetic_inconsistencies[0].auditor < test-audit-coins.json`
-    if test $AMOUNT != "TESTKUDOS:2"
+    AMOUNT=$(jq -r .amount_arithmetic_inconsistencies[0].auditor < test-audit-coins.json)
+    if [ "$AMOUNT" != "TESTKUDOS:2" ]
     then
         exit_fail "Coin auditor amount $AMOUNT is wrong"
     fi
-    AMOUNT=`jq -r .amount_arithmetic_inconsistencies[0].exchange < test-audit-coins.json`
-    if test $AMOUNT != "TESTKUDOS:5"
+    AMOUNT=$(jq -r .amount_arithmetic_inconsistencies[0].exchange < test-audit-coins.json)
+    if [ "$AMOUNT" != "TESTKUDOS:5" ]
     then
         exit_fail "Coin exchange amount $AMOUNT is wrong"
     fi
-    echo OK
+    echo "OK"
 
     # Undo database modification
-    echo "UPDATE exchange.recoup SET amount_val=2 WHERE recoup_uuid=1" | psql -Aqt $DB
+    echo "UPDATE exchange.recoup SET amount_val=2 WHERE recoup_uuid=1" | psql -Aqt "$DB"
 
 }
 
@@ -525,26 +656,26 @@ function test_2() {
 function test_3() {
 
     echo "===========3: recoup-refresh amount inconsistency==========="
-    echo "UPDATE exchange.recoup_refresh SET amount_val=5 WHERE recoup_refresh_uuid=1" | psql -Aqt $DB
+    echo "UPDATE exchange.recoup_refresh SET amount_val=5 WHERE recoup_refresh_uuid=1" | psql -Aqt "$DB"
 
     run_audit
 
     echo -n "Testing inconsistency detection... "
     # Coin spent exceeded coin's value
-    AMOUNT=`jq -r .total_arithmetic_delta_minus < test-audit-coins.json`
-    if test $AMOUNT != "TESTKUDOS:5"
+    AMOUNT=$(jq -r .total_arithmetic_delta_minus < test-audit-coins.json)
+    if [ "$AMOUNT" != "TESTKUDOS:5" ]
     then
         exit_fail "Arithmetic delta minus amount $AMOUNT is wrong"
     fi
-    AMOUNT=`jq -r .total_arithmetic_delta_plus < test-audit-coins.json`
-    if test $AMOUNT != "TESTKUDOS:0"
+    AMOUNT=$(jq -r .total_arithmetic_delta_plus < test-audit-coins.json)
+    if [ "$AMOUNT" != "TESTKUDOS:0" ]
     then
         exit_fail "Arithmetic delta plus amount $AMOUNT is wrong"
     fi
-    echo OK
+    echo "OK"
 
     # Undo database modification
-    echo "UPDATE exchange.recoup_refresh SET amount_val=0 WHERE recoup_refresh_uuid=1" | psql -Aqt $DB
+    echo "UPDATE exchange.recoup_refresh SET amount_val=0 WHERE recoup_refresh_uuid=1" | psql -Aqt "$DB"
 
 }
 
@@ -553,34 +684,35 @@ function test_3() {
 function test_4() {
 
     echo "===========4: invalid recoup==========="
-    echo "DELETE FROM exchange.denomination_revocations;" | psql -Aqt $DB
+    echo "DELETE FROM exchange.denomination_revocations;" | psql -Aqt "$DB"
 
     run_audit
 
     echo -n "Testing inconsistency detection... "
     # Coin spent exceeded coin's value
-    jq -e .bad_sig_losses[0] < test-audit-coins.json > /dev/null || exit_fail "Bad recoup not detected"
-    AMOUNT=`jq -r .irregular_loss < test-audit-coins.json`
-    if test $AMOUNT == "TESTKUDOS:0"
+    jq -e .bad_sig_losses[0] \
+       < test-audit-coins.json \
+       > /dev/null \
+        || exit_fail "Bad recoup not detected"
+    AMOUNT=$(jq -r .irregular_loss < test-audit-coins.json)
+    if [ "$AMOUNT" == "TESTKUDOS:0" ]
     then
         exit_fail "Total bad sig losses are wrong"
     fi
-    TAB=`jq -r .row_inconsistencies[0].table < test-audit-reserves.json`
-    if test $TAB != "recoup"
+    TAB=$(jq -r .row_inconsistencies[0].table < test-audit-reserves.json)
+    if [ "$TAB" != "recoup" ]
     then
         exit_fail "Wrong table for row inconsistency, got $TAB"
     fi
-    echo OK
+    echo "OK"
 
     # Undo database modification (can't easily undo DELETE, so full reload)
     full_reload
-
 }
 
 
 
 
-
 # *************** Main test loop starts here **************
 
 
@@ -588,14 +720,14 @@ function test_4() {
 # Sets $fail to 0 on success, non-zero on failure.
 function check_with_database()
 {
-    BASEDB=$1
+    BASEDB="$1"
     # Configuration file to use
-    CONF=$1.conf
+    CONF="$1.conf"
     echo "Running test suite with database $BASEDB using configuration $CONF"
 
-    MASTER_PRIV_FILE=${BASEDB}.mpriv
-    taler-config -f -c ${CONF} -s exchange-offline -o MASTER_PRIV_FILE -V ${MASTER_PRIV_FILE}
-    MASTER_PUB=`gnunet-ecc -p $MASTER_PRIV_FILE`
+    MASTER_PRIV_FILE="${BASEDB}.mpriv"
+    taler-config -f -c "${CONF}" -s exchange-offline -o MASTER_PRIV_FILE -V "${MASTER_PRIV_FILE}"
+    MASTER_PUB=$(gnunet-ecc -p "$MASTER_PRIV_FILE")
 
     echo "MASTER PUB is ${MASTER_PUB} using file ${MASTER_PRIV_FILE}"
 
@@ -605,14 +737,14 @@ function check_with_database()
     fail=0
     for i in $TESTS
     do
-        test_$i
-        if test 0 != $fail
+        "test_$i"
+        if [ 0 != "$fail" ]
         then
             break
         fi
     done
     # echo "Cleanup (disabled, leaving database $DB behind)"
-    dropdb $DB
+    dropdb "$DB"
 }
 
 
@@ -628,36 +760,49 @@ DB=revoke-basedb
 echo "Testing for jq"
 jq -h > /dev/null || exit_skip "jq required"
 echo "Testing for faketime"
-faketime -h > /dev/null || exit_skip "faketime required"
+faketime -h > /dev/null \
+    || exit_skip "faketime required"
 echo "Testing for libeufin(-cli)"
-libeufin-cli --help >/dev/null 2> /dev/null </dev/null || exit_skip "libeufin required"
+libeufin-cli --help \
+             >/dev/null \
+             2> /dev/null \
+             </dev/null \
+    || exit_skip "libeufin required"
 echo "Testing for pdflatex"
 which pdflatex > /dev/null </dev/null || exit_skip "pdflatex required"
 echo "Testing for taler-wallet-cli"
-taler-wallet-cli -h >/dev/null </dev/null 2>/dev/null || exit_skip "taler-wallet-cli required"
+taler-wallet-cli -h \
+                 >/dev/null \
+                 </dev/null \
+                 2>/dev/null \
+    || exit_skip "taler-wallet-cli required"
 
-echo -n "Testing for Postgres"
+echo -n "Testing for Postgres "
 # Available directly in path?
 INITDB_BIN=$(command -v initdb) || true
-if [[ ! -z "$INITDB_BIN" ]]; then
-  echo " FOUND (in path) at" $INITDB_BIN
+if [[ -n "$INITDB_BIN" ]]; then
+  echo "FOUND (in path) at $INITDB_BIN"
 else
-  HAVE_INITDB=`find /usr -name "initdb" | head -1 2> /dev/null | grep postgres` || exit_skip " MISSING"
-  echo " FOUND at" `dirname $HAVE_INITDB`
-  INITDB_BIN=`echo $HAVE_INITDB | grep bin/initdb | grep postgres | sort -n | tail -n1`
+  HAVE_INITDB=$(find /usr -name "initdb" | head -1 2> /dev/null | grep postgres) || exit_skip " MISSING"
+  echo "FOUND at " "$(dirname "$HAVE_INITDB")"
+  INITDB_BIN=$(echo "$HAVE_INITDB" | grep bin/initdb | grep postgres | sort -n | tail -n1)
 fi
 echo -n "Setting up Postgres DB"
-POSTGRES_PATH=`dirname $INITDB_BIN`
-ORIGIN=`pwd`
-MYDIR=`mktemp -d /tmp/taler-auditor-basedbXXXXXX`
+POSTGRES_PATH=$(dirname "$INITDB_BIN")
+MYDIR=$(mktemp -d /tmp/taler-auditor-basedbXXXXXX)
 TMPDIR="${MYDIR}/postgres/"
-mkdir -p $TMPDIR
+mkdir -p "$TMPDIR"
 echo -n "Setting up Postgres DB at $TMPDIR ..."
-$INITDB_BIN --no-sync --auth=trust -D ${TMPDIR} > ${MYDIR}/postgres-dbinit.log 2> ${MYDIR}/postgres-dbinit.err
+"$INITDB_BIN" \
+    --no-sync \
+    --auth=trust \
+    -D "${TMPDIR}" \
+    > "${MYDIR}/postgres-dbinit.log" \
+    2> "${MYDIR}/postgres-dbinit.err"
 echo " DONE"
-mkdir ${TMPDIR}/sockets
+mkdir "${TMPDIR}/sockets"
 echo -n "Launching Postgres service at $POSTGRES_PATH"
-cat - >> $TMPDIR/postgresql.conf <<EOF
+cat - >> "$TMPDIR/postgresql.conf" <<EOF
 unix_socket_directories='${TMPDIR}/sockets'
 fsync=off
 max_wal_senders=0
@@ -665,23 +810,30 @@ synchronous_commit=off
 wal_level=minimal
 listen_addresses=''
 EOF
-cat $TMPDIR/pg_hba.conf | grep -v host > $TMPDIR/pg_hba.conf.new
-mv $TMPDIR/pg_hba.conf.new  $TMPDIR/pg_hba.conf
-${POSTGRES_PATH}/pg_ctl -D $TMPDIR -l /dev/null start > ${MYDIR}/postgres-start.log 2> ${MYDIR}/postgres-start.err
+grep -v host \
+     < "$TMPDIR/pg_hba.conf" \
+     > "$TMPDIR/pg_hba.conf.new"
+mv "$TMPDIR/pg_hba.conf.new" "$TMPDIR/pg_hba.conf"
+"${POSTGRES_PATH}/pg_ctl" \
+    -D "$TMPDIR" \
+    -l /dev/null \
+    start \
+    > "${MYDIR}/postgres-start.log" \
+    2> "${MYDIR}/postgres-start.err"
 echo " DONE"
 PGHOST="$TMPDIR/sockets"
 export PGHOST
 
 echo "Generating fresh database at $MYDIR"
-if faketime -f '-1 d' ./generate-revoke-basedb.sh $MYDIR/$DB
+if faketime -f '-1 d' ./generate-revoke-basedb.sh "$MYDIR/$DB"
 then
-    check_with_database $MYDIR/$DB
-    if test x$fail != x0
+    check_with_database "$MYDIR/$DB"
+    if [ "x$fail" != "x0" ]
     then
-        exit $fail
+        exit "$fail"
     else
         echo "Cleaning up $MYDIR..."
-        rm -rf $MYDIR || echo "Removing $MYDIR failed"
+        rm -rf "$MYDIR" || echo "Removing $MYDIR failed"
     fi
 else
     echo "Generation failed"