xargs beschränkt? Script funktioniert nicht...

#!/bin/sh
#
# Clear variables and temporary files.
counter=0
echo "" > deletablefiles.log

# Start main loop, examine files with grep (one by one) and create list of deletable files.
for i in `ls --ignore=*.h --ignore=*.log --ignore=mkr?00`
do
  temp=0
  tempstr=""
  tempstr=`grep -l "bermittlungsstatus  (Fehlgeschlagen)" $i | grep -v "\.sh"`
  temp=`echo $tempstr | wc -l`
  if [ ${#tempstr} -gt 0 ]; then
    echo $tempstr >> deletablefiles.log
    echo $tempstr".h" >> deletablefiles.log
    let counter=counter+temp
  fi
done

# Check number of deletable emails.
if [ $counter -gt 800 ]; then
  date >> /root/watch_spam.log
  echo $counter" NDR messages found. Deleting required." >> /root/watch_spam_mails.log

  # Stopping eSafe service, and writing to log.
  /etc/rc3.d/esafe stop >> /root/watch_spam.log

  # Deleting bad emails.
  cat deletablefiles.log | xargs --replace=filename rm filename 
   
  # Starting eSafe service, and writing to log.
  /etc/rc3.d/esafe start >> /root/watch_spam.log

# If there are less than 800 emails, we will write to the log, and do nothing
else
  date >> /root/watch_spam.log
  echo $counter" NDR messages found. Everything is OK." >> /root/watch_spam.log
fi