password prompt keep on coming on the console - ssh

Question

I wrote below command, which will copy the id_dsa.pub file to other server as part of my auto login feature. But every time below message is coming on the console:
spawn scp -o StrictHostKeyChecking=no /opt/mgtservices/.ssh/id_dsa.pub root#12.43.22.47:/root/.ssh/id_dsa.pub
Password:
Password:
Below script I wrote for this:
function sshkeygenerate()
{
if ! [ -f $HOME/.ssh/id_dsa.pub ] ;then expect -c" spawn ssh-keygen -t dsa -f $HOME/.ssh/id_dsa
expect y/n { send y\r ; exp_continue } expect passphrase): { send \r ; exp_continue}expect again: { send \r ; exp_continue}
spawn chmod 700 $HOME/.ssh && chmod 700 $HOME/.ssh/*
exit "
fi
expect -c"spawn scp -o StrictHostKeyChecking=no $HOME/.ssh/id_dsa.pub root"#"12.43.22.47:/root/.ssh/id_dsa.pub
expect *assword: { send $ROOTPWD\r }expect yes/no { send yes\r ; exp_continue }
spawn ssh -o StrictHostKeyChecking=no root"#"12.43.22.47 \"chmod 755 /root/.ssh/authorized_keys\"
expect *assword: { send $ROOTPWD\r }expect yes/no { send yes\r ; exp_continue }
spawn ssh -o StrictHostKeyChecking=no root"#"12.43.22.47 \"cat /root/.ssh/id_dsa.pub >> /root/.ssh/authorized_keys\"
expect *assword: { send $ROOTPWD\r }expect yes/no { send yes\r; exp_continue }
sleep 1
exit"
}

Answer 1

You should first create a passwordless ssh to the destination server, then you won't need to enter the password while you will do the scp.
Assuming 192.168.0.11 is the destination machine:
1) ssh-keygen -t rsa
2) ssh sheena#192.168.0.11 mkdir -p .ssh
3) cat .ssh/id_rsa.pub | ssh sheena#192.168.0.11 'cat >> .ssh/authorized_keys'
4) ssh sheena#192.168.0.11 "chmod 700 .ssh; chmod 640 .ssh/authorized_keys"
Link for the refernce:
http://www.tecmint.com/ssh-passwordless-login-using-ssh-keygen-in-5-easy-steps/