srch_strings_pipe

#!/bin/bash

# Written by: Dave Lassalle
# Accepts srch_strings output in a pipeline and adds block number and 
#   byte offset within the block to the output 

FSSTAT_CMD="/usr/local/bin/fsstat"
GREP_CMD="/bin/grep"
AWK_CMD="/usr/bin/awk"
BC_CMD="/usr/bin/bc"
PASTE_CMD="/usr/bin/paste"
RM_CMD="/bin/rm"

usage()
{
cat << EOF
usage: $0 [-h] -b blocksize  

$0 can be used in a pipeline to add the block number and offset within the block to 
	"srch_strings -t d". Reads from stdin.

OPTIONS:
   -h      Print this help message
   -b      block size of filesystem in imagefile (not needed if -i is used)
   -o	   output file, will output to stdout if not specified
EOF
}

BLOCKSIZE=
OUTFILE=
while getopts “hb:o:” OPTION; do
     case $OPTION in
         h)
             usage
             exit 1
             ;;
         b)
             BLOCKSIZE=$OPTARG
             ;;
	 o)
	     OUTFILE=$OPTARG
	     ;;
         \?)
             usage
             exit
             ;;
     esac
done

if [[ -z $BLOCKSIZE ]]
then
	usage
	exit 1
fi

$RM_CMD srch_blocks.tmp
$RM_CMD srch_offset.tmp
$RM_CMD srch_strings.tmp
while read data; do
	echo $data | $AWK_CMD '{print $1"/'$BLOCKSIZE'"}' | $BC_CMD >> srch_blocks.tmp 
	echo $data | $AWK_CMD '{print $1"%'$BLOCKSIZE'"}' | $BC_CMD >> srch_offset.tmp 
	echo $data >> srch_strings.tmp
done
if [[ -z $OUTFILE ]]
then
	$PASTE_CMD srch_blocks.tmp srch_offset.tmp | $PASTE_CMD - srch_strings.tmp
else
	$PASTE_CMD srch_blocks.tmp srch_offset.tmp | $PASTE_CMD - srch_strings.tmp > $OUTFILE
fi
$RM_CMD srch_blocks.tmp
$RM_CMD srch_offset.tmp
$RM_CMD srch_strings.tmp

exit 0