[CentOS] scp and key login

[Bent Terp]

Short version:
[user at machineA ~]$ ssh-add
Enter passphrase for /home/user/.ssh/id_dsa:
Identity added: /home/user/.ssh/id_dsa (/home/user/.ssh/id_dsa)
[user at machineA ~]$ ssh -A user at machineB
Last login: Wed Sep  31 25:74:52 2008 from 127.0.0.1
[user at machineB ~]$ scp /tmp/CentOS.iso user at machineC:/tmp

;-)