Kehan Pan aptxx

## ops_redis.sh
# delete keys
redis-cli --scan --pattern users:* | xargs redis-cli unlink

# expire keys after 600 seconds
redis-cli --scan --pattern users:* | xargs -L1 -I{} redis-cli expire {} 600

## sudoer_to_root.sh
sudo su -
	# delete keys
	redis-cli --scan --pattern users:* \| xargs redis-cli unlink

	# expire keys after 600 seconds
	redis-cli --scan --pattern users:* \| xargs -L1 -I{} redis-cli expire {} 600