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/usr/lib/cups/backend/l-liefer-doppel
/usr/lib/cups/backend-available/l-liefer-doppel

drwxr-xr-x 2 root root 4096 2013-01-22 12:13 /usr/lib/cups/backend/
drwxr-xr-x 2 root root 4096 2013-01-22 11:52 /usr/lib/cups/backend-available/
-rwxr-xr-x 2 root root  791 2013-01-22 12:13 /usr/lib/cups/backend-available/l-liefer-doppel
-rwxr-xr-x 2 root root  791 2013-01-22 12:13 /usr/lib/cups/backend/l-liefer-doppel

#! /bin/bash
 # Have debug info in /var/log/cups/error_log:
 set -x
 # Output "device discovery" information on stdout:
 if test "$#" = "0"
 then echo 'direct l-liefer-doppel  "Unknown" "l-liefer-doppel:/"'
#  then echo 'network mysocket://192.168.1.2:9100 "Unknown" "192.168.1.2:9100"'
      exit 0
 fi
 # Set INPUTFILE to where the input comes from:
 INPUTFILE="-"
 if test -n "$6"
 then INPUTFILE="$6"
 fi
 # Send the data to the remote port:
# echo 'INFO: sending data to 192.168.1.2:9100' 1>&2
 DATUM="`date +%F.%T.%N`"
 echo $DATUM
 echo 'INFO: sending data to temp-file' 1>&2
 if cat $INPUTFILE >/tmp/$DATUM
 then echo 'INFO:' 1>&2
	lpr -P l-liefer-3 /tmp/$DATUM 
	lpr -P l-liefer-2 /tmp/$DATUM 
      exit 0
 else echo 'ERROR: failed writing to /tmp/' $DATUM 1>&2
      exit 1
 fi