migrate redis db to another redis db.

migrate-redis-db.sh

#!/bin/bash

#source DB (localhost or IP)
source_host=localhost
source_port=6379
source_db=0
#target DB (localhost or IP)
target_host=localhost2
target_port=6379
target_db=0

#copy command
redis-cli -h $source_host -p $source_port -n $source_db keys \* | while read key;
do
	echo "copying $key"
	redis-cli --raw -h $source_host -p $source_port -n $source_db DUMP "$key" | head -c -1 | redis-cli -x -h $target_host -p $target_port -n $target_db RESTORE "$key" 0
done