move redis elements from db to another db (local)

redis_mv.sh

#!/bin/bash
if [ "$1" == "" ]; then
  echo "Usage: $0 [src db] [dest db]"
  exit 0
else
  srcdb="$1"
fi
if [ "$2" == "" ]; then
  destdb="1"
else
  destdb="$2"
fi
REDIS=$(which redis-cli)
CURSOR=-1
while [ $CURSOR -ne 0 ]; do
  if [ $CURSOR -lt 0 ];then
    CURSOR=0
  fi
  IFS=$'\n';
  KEYS=($(${REDIS} -n $srcdb --raw scan $CURSOR))
  CURSOR=${KEYS[0]}
  IFS=' ';
  for KEY in ${KEYS[@]:1}; do
    echo MOVE $KEY $destdb $(${REDIS} -n $srcdb --raw move $KEY $destdb)
  done
done