diff --git a/process/cron/orders.cron b/process/cron/orders.cron
index dc060a5e1..7632ac844 100755
--- a/process/cron/orders.cron
+++ b/process/cron/orders.cron
@@ -14,9 +14,10 @@ if [ -z "$ERESSEA" ] ; then
   echo "The ERESSEA environment variable is not set. Assuming $ERESSEA."
 fi
 
-cd $ERESSEA
+cd "$ERESSEA" || exit
 
-for GAME in $*
+for GAME in "$@"
 do
-  orders-php/check-orders.sh $GAME
+  orders-php/check-orders.sh "$GAME"
 done
+
diff --git a/process/cron/preview.cron b/process/cron/preview.cron
index 5192d0f5a..04869c2f2 100755
--- a/process/cron/preview.cron
+++ b/process/cron/preview.cron
@@ -3,7 +3,7 @@
 [ "$PREVIEW" != "yes" ] && exit
 [ -z "${ERESSEA}" ] && ERESSEA="$HOME/eressea"
 
-eval $(luarocks path)
+eval "$(luarocks path)"
 branch="develop"
 if [ -e "${ERESSEA}/build/.preview" ]; then
     branch=$(cat "${ERESSEA}/build/.preview")
diff --git a/process/cron/run-eressea.cron b/process/cron/run-eressea.cron
index 32ad873df..aa3ed287b 100755
--- a/process/cron/run-eressea.cron
+++ b/process/cron/run-eressea.cron
@@ -1,55 +1,55 @@
 #!/bin/bash
 
-eval $(luarocks path)
+eval "$(luarocks path)"
 GAME=$1
 (
-[ "$ENABLED" != "yes" ] && exit
-[ -z ${ERESSEA} ] && ERESSEA=$HOME/eressea
+[ "$ENABLED" == "no" ] && exit
+[ -z "$ERESSEA" ] && ERESSEA="$HOME/eressea"
 
 export ERESSEA
-BIN=$ERESSEA/server/bin
-TURN=$(cat $ERESSEA/game-$GAME/turn)
-if [ ! -e $ERESSEA/game-$GAME/data/$TURN.dat ]; then
+BIN="$ERESSEA/server/bin"
+TURN=$(cat "$ERESSEA/game-$GAME/turn")
+if [ ! -e "$ERESSEA/game-$GAME/data/$TURN.dat" ]; then
   echo "data file $TURN is missing, cannot run turn for game $GAME"
   exit 1
 fi
-REPORTS=$ERESSEA/game-$GAME/reports
-if [ -d $REPORTS ]; then
-  rm -rf $REPORTS
+REPORTS="$ERESSEA/game-$GAME/reports"
+if [ -d "$REPORTS" ]; then
+  rm -rf "$REPORTS"
 fi
-mkdir $REPORTS
+mkdir "$REPORTS"
 
-cd $ERESSEA/game-$GAME
+cd "$ERESSEA/game-$GAME" || exit
 
 if [ -d test ]; then
   touch test/execute.lock
 fi
 
-$BIN/create-orders $GAME $TURN
-if [ ! -s $ERESSEA/game-$GAME/orders.$TURN ]; then
+"$BIN/create-orders" "$GAME" "$TURN"
+if [ ! -s "$ERESSEA/game-$GAME/orders.$TURN" ]; then
   echo "server did not create orders for turn $TURN in game $GAME"
   exit 2
 fi
 
-$BIN/backup-eressea $GAME $TURN
+"$BIN/backup-eressea" "$GAME" "$TURN"
 rm -f execute.lock
-$BIN/run-turn $GAME $TURN
+"$BIN/run-turn" "$GAME" "$TURN"
 touch execute.lock
 
-if [ ! -s $REPORTS/reports.txt ]; then
+if [ ! -s "$REPORTS/reports.txt" ]; then
   echo "server did not create reports.txt in game $GAME"
   exit 4
 fi
-$BIN/backup-eressea $GAME $TURN
+"$BIN/backup-eressea" "$GAME" "$TURN"
 let TURN=$TURN+1
-if [ ! -s $ERESSEA/game-$GAME/data/$TURN.dat ]; then
+if [ ! -s "$ERESSEA/game-$GAME/data/$TURN.dat" ]; then
   echo "server did not create data for turn $TURN in game $GAME"
   exit 3
 fi
 echo "sending reports for game $GAME, turn $TURN"
-$BIN/compress.sh $GAME $TURN
-$BIN/sendreports.sh $GAME
-$BIN/backup-eressea $GAME $TURN
+"$BIN/compress.sh" "$GAME" "$TURN"
+"$BIN/sendreports.sh" "$GAME"
+"$BIN/backup-eressea" "$GAME" "$TURN"
 rm -f test/execute.lock
-) | tee -a $HOME/log/eressea.cron.log
+) | tee -a "$HOME/log/eressea.cron.log"
 
diff --git a/process/orders-process b/process/orders-process
index 4751a94b1..d77b7fa2f 100755
--- a/process/orders-process
+++ b/process/orders-process
@@ -1,6 +1,7 @@
 #!/bin/sh
-SCRIPT=$(readlink -f $0)
-cd $(dirname $SCRIPT)
+SCRIPT=$(readlink -f "$0")
+SCRDIR=$(dirname "$SCRIPT") 
+cd "$SCRDIR" || exit
 
 lockfile -r3 -l120 orders.queue.lock
 python process-orders.py "$@"
diff --git a/process/received-mail.sh b/process/received-mail.sh
deleted file mode 100644
index b6b4a0605..000000000
--- a/process/received-mail.sh
+++ /dev/null
@@ -1 +0,0 @@
-ls -1 orders.dir/turn* | sed -e 's/.*turn-\(.*\),gruenbaer.*/\1/' | sort -u
diff --git a/process/received.sh b/process/received.sh
deleted file mode 100644
index 9a0c4511d..000000000
--- a/process/received.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-grep -hiw ERESSEA orders.dir/turn-* | cut -d\  -f2 | sort -u