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File name : aptitude-create-state-bundle
Content :
#!/bin/bash

HELP=0
PRINT_INPUTS=0
FORCE_GZIP=0
FORCE_BZIP2=0

DONE=0
while [ $DONE = 0 ]
do
  case "$1" in
      --force-gzip )
	  FORCE_GZIP=1
	  FORCE_BZIP2=0
	  shift
	  ;;
      --force-bzip2 )
	  FORCE_GZIP=0
	  FORCE_BZIP2=1
	  shift
	  ;;
      --help )
	  HELP=1
	  shift
	  ;;
      --print-inputs )
	  PRINT_INPUTS=1
	  shift
	  ;;
      * )
	  DONE=1
	  ;;
  esac
done

if ([ $PRINT_INPUTS = 0 ] && [ "$#" -ne 1 ]) ||
   ([ $PRINT_INPUTS = 1 ] && [ "$#" -ne 0 ]) ||
   [ $HELP = 1 ]
then
    echo "Usage: $0 [options ... ] <output-file>"
    echo
    echo "This script will collect the copious information needed to"
    echo "reproduce an aptitude bug, storing it in the given output file."
    echo
    echo "Options:"
    echo "  --force-bzip2     Override autodetection of the comrpession"
    echo "                    format: use bzip2 even if it appears to be"
    echo "                    unavailable."
    echo "  --force-gzip      Override autodetection of the compression"
    echo "                    format: use gzip even if bzip2 is available."
    echo "  --help            Print this message, then exit."
    echo "  --print-inputs    Display the list of files and directories"
    echo "                    that would be included in the bundle, then exit."

    exit 1
fi

INPUTS[1]="$HOME/.aptitude"
INPUTS[2]="/var/lib/aptitude"
INPUTS[3]="/var/lib/apt"
INPUTS[4]="/var/cache/apt/*.bin"
INPUTS[5]="/etc/apt"
INPUTS[6]="/var/lib/dpkg/status"

if [ $PRINT_INPUTS = 1 ]
then
    for x in ${INPUTS[@]}; do echo $x; done
    exit 0
fi

# Stick "." on the front of all inputs.
declare -a REALINPUTS
i=1
while [ $i -le ${#INPUTS[*]} ]
do
  REALINPUTS[$i]=./${INPUTS[$i]}
  i=$((i + 1))
done

OUTFILE="$1"

if [ $FORCE_BZIP2 = 1 ] || ([ $FORCE_GZIP = 0 ] && which bzip2 2> /dev/null > /dev/null)
then
    COMPRESSOR=bzip2
else
    COMPRESSOR=gzip
fi

(cd / && tar c ${REALINPUTS[@]}) | $COMPRESSOR -c > "$OUTFILE"