Here is the scenario. I have 2 servers serv1 and serv2. Previously i had a crontab in serv4 that backed data from serv1 with login as "thecoolone" on both servers. And this crontab was functioning properly before. Now i tried to make a new crontab in serv4 under a new login "user1" and the same login "thecoolone" on serv1. After i made this crontab and tried to execute both the old one and the one i just created, neither of them work. And so i want to remove the entry (i.e public key copy and authorized_keys entry) that i made on serv1 under "thecoolone" login so that atleast the crontab that was working before starts working again.