yum -y install expect

cat auto_svn.sh
#!/bin/bash
passwd='123456'
/usr/bin/expect -EOF
set time 30
spawn ssh -p18330 root@192.168.10.22
expect {
"*yes/no" { send "yes\r"; exp_continue }
"*password:" { send "$passwd\r" }
}
expect "*#"
send "cd /home/trunk\r"
expect "*#"
send "svn up\r"
expect "*#"
send "exit\r"
interact
expect eof
EOF