1.在使用之前，先安裝epel源，yum install expect -y
2.寫分發腳本，後綴為exp

#!/usr/bin/expect
set host_ip [lindex $argv 0]
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub $host_ip
expect {
        -timeout 60
        "(yes/no)?" { send "yes\n";exp_continue}
        "password:" { send "Ak46\n"}
        timeout {puts "Connect timeout!";return}
}
expect eof
exit -onexit {
        send_user "Job has finished!"
}

註：set的作用是設置變量，spawn設置執行命令時，可以引用變量；變量的第一個參數為0
3.執行以下命令開始分發

for ip in `cat /root/ip.txt`;do expect /root/fenfa_sshkey.exp $ip ;done

expect--自動批量分發公鑰腳本