vi /etc/hosts
192.168.0.1 server1
192.168.0.2 server2
192.168.0.3 server3
192.168.0.4 server4
192.168.0.5 server5
192.168.0.6 server6
192.168.0.7 server7
192.168.0.8 server8
192.168.0.9 server9
192.168.0.10 server10

vi changename.sh
#!/bin/bash
# This is a shell script to change hostname
# version 0.1
# Created in 2015.8.11
# Creator Edison
export PATH=$PATH
export USER=root
export SNAMEPRE=server
export PASSWD=test01  #定义密码
for i in {1..10};
do /usr/bin/expect << EOF   ##这里用到了expect完成了确认yes和密码输入交互
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub $USER@$SNAMEPRE$i
expect {
"(yes/no)?" {send "yes\r";exp_continue}
"password:" {send "$PASSWD\r"}
}
interact
expect eof
EOF
ssh $USER@$SNAMEPRE$i "sed -i s/^HOST.*/HOSTNAME=$SNAMEPRE$i/ /etc/sysconfig/network";
scp /etc/hosts $USER@$SNAMEPRE$i:/etc/hosts;
done;