migrate_to_3.2

一套客户/服务器模式的备份系统代码,跨平台,支持linux,AIX, IRIX, FreeBSD, Digital Unix (OSF1), Solaris and HP-UX.

#!/bin/sh

echo 'This script is quite dumb, it asks you more questions'
echo 'than you might think is necessary. However, this script'
echo 'is meant to run exactly one time. If it fails, there is'
echo 'some trouble ahead. See Q16 of the HOWTO.FAQ.DO-DONT of'
echo 'the distribution how to get back out of the trouble.'
echo 'Please supply the required information'
echo 'so this script will succeed. Have fun.'
echo ' '

matches(){
  RESULT=`echo "$1" | egrep -i "$2" | wc -l`
  echo $RESULT
}

writeoutline(){
  if [ "$SERVER"X = X ] ; then
    SERVER="$DEFSERVER"
  fi
  if [ "$PORT"X = X ] ; then
    PORT="$DEFPORT"
  fi

  echo "$BUNUM":" $SERVER $PORT $CART $FILE"

  BUNUM=""
  SERVER=""
  PORT=""
  CART=""
  FILE=""
}

cleanup(){
  /bin/rm -f $TMPFILE
  exit $EST
}

TMPFILE=/tmp/afbu_update_mininfo.$$

trap cleanup 2
trap cleanup 15

DEFPORT=2988

echo "Please enter the hostname of your default backup server:"
read DEFSERVER
echo ' '
echo "Please enter the port number of your default backup service"
echo '(normally this is 2988):'
read DEFPORT
echo ' '

echo "Please enter the full path of the .../var directory of your"
echo "clientside installation:"
EXISTS=no
while [ $EXISTS = no ] ; do
  read DN

  STARTPOSFILE="$DN/start_positions"
  if [ -f "$STARTPOSFILE" ] ; then
    echo " "
    echo "The file $STARTPOSFILE already esists."
    echo "It contains `wc -l < $STARTPOSFILE` lines."
    echo "Please check and possibly remove or rename"
    echo "this file before proceeding. Please try again:"
    continue
  fi

  if [ ! -f $DN/num ] ; then
    echo "Error: The file $DN/num is not present. Please check and try again."
    continue
  fi

  touch "$STARTPOSFILE"
  if [ $? -ne 0 ] ; then
    echo ' '
    echo "Could not create file $STARTPOSFILE (necessary),"
    echo "please try again:"
  else
    EXISTS=yes
  fi
done


echo ' '
echo "Please enter the filename with your pre-3.2 style"
echo "Minimum restore info:"

EXISTS=no
while [ $EXISTS = no ] ; do
  read FN
  if [ ! -r $FN ] ; then
    echo " "
    echo "This file does not exist or is not readable."
    echo "Please try again:"
  else
    EXISTS=yes
  fi
done

echo " "

BUNUM=""
CART=""
FILE=""
SERVER=""
PORT=""

echo " "
echo "Writing $STARTPOSFILE, this may take a while ..."

/bin/rm -f $TMPFILE
if [ -f $TMPFILE ] ; then
  echo "Security alert: Could not remove file $TMPFILE. Exiting."
  exit 3
fi

grep '^~~' $FN > $TMPFILE

NLINES=`wc -l < $TMPFILE`
N=0

while read line ; do
  case "$line" in
   ~~Backup*)
    if [ "$BUNUM"X != X -a "$CART"X != X -a "$FILE"X != X ] ; then
      writeoutline >> $STARTPOSFILE
    fi

    BUNUM=`echo $line | awk '{print $NF}'`
    NUM="$BUNUM"
    ;;
   ~~Cartridge*)
    CART=`echo $line | awk '{print $NF}'`
    ;;
   ~~File*)
    FILE=`echo $line | awk '{print $NF}'`
    ;;
   ~~Server*)
    SERVER=`echo $line | awk '{print $NF}'`
    ;;
   ~~Port*)
    PORT=`echo $line | awk '{print $NF}'`
    ;;
  esac

  N=`expr $N + 1`

  echo dummy|awk '{printf "%d %% done\r",'"$N * 100 / $NLINES"'}'

done < $TMPFILE

if [ "$BUNUM"X != X -a "$CART"X != X -a "$FILE"X != X ] ; then
  writeoutline >> $STARTPOSFILE
fi

echo "Wrote `wc -l < $STARTPOSFILE` lines."

if [ "$NUM"X = X ] ; then
  echo "Error: No old style minimum restore info found."
  exit 1
fi

echo " "
echo "Checking current backup number ..."
FNUM=`cat $DN/num`
if [ $FNUM -ne $NUM ] ; then
  echo "File $DN/num contains `cat $DN/num` while the last"
  echo "found backup number in your old style minimum restore"
  echo "file is $NUM. This is an error, exiting."
  exit 2
fi


echo " "
echo "Now to write this file to disk and to create the"
echo "minimum restore information we must run a short"
echo "full backup saving only this file. Please enter the"
echo "full path to the version 3.2 full_backup program:"
EXISTS=no
while [ $EXISTS = no ] ; do
  read FB
  if [ ! -x $FB ] ; then
    echo " "
    echo "$FB is not executable. Please try again:"
  else
    EXISTS=yes
  fi
done

echo " "
$FB -va $STARTPOSFILE

cleanup