root@fe2e836e4470:/data# redis-cli -a pwd1 -n 11 keys \* |while read key
> do
> echo "Copying $key"
> redis-cli -a pwd1 -n 11 --raw dump $key |head -c -1 \
> |redis-cli -h <dst_ip> -p 6379 -a pwd2 -n 30 -x restore $key 0
> done


## 写成一行，如下：
root@fe2e836e4470:/data# redis-cli -a pwd1 -n 11 keys \* |while read key; do echo "Copying $key"; redis-cli -a pwd1 -n 11 --raw dump $key |head -c -1 |redis-cli -h <dst_ip> -p 6379 -a pwd2 -n 30 -x restore $key 0; done