#! /bin/sh#远程主机1(源主机)
src_host=$1
src_user=$2
src_passwd=$3#远程主机2（目标主机）
dst_host=$4
dst_user=$5
dst_passwd=$6src_pub=/root/.ssh/id_rsa.pub#在远程主机1上生成公钥
Keygen()
{expect << EOFspawn ssh $src_user@$src_host "test -f /root/.ssh/id_rsa.pub || echo CheckFalse "expect {"password:" {send "$src_passwd\n"}  eof { exit }}expect CheckFalse { exit 11 }EOFif [ $? -ne 11 ];then
echo -n "公钥已经存在，将直接拷贝……"
else
echo -n "公钥不存在，开始创建……"
expect << EOF
spawn ssh $src_user@$src_host "ssh-keygen -t rsa "
while {1} {expect {"password:" {send "$src_passwd\n"}               "yes/no*" {send "yes\n"}"Enter file in which to save the key*" {send "\n"}"Enter passphrase*" {send "\n"}"Enter same passphrase again:" {send "\n"}"Overwrite (y/n)" {send "n\n"}eof {exit} }}
EOF
fi
}#从远程主机1上拷贝公钥到远程主机2上
Get_pub ()
{expect << EOFspawn scp $src_user@$src_host:$src_pub $dst_user@$dst_host:/root/.ssh/$src_hostexpect {"password:" {send "$src_passwd\n";exp_continue}"password:" {send "$dst_passwd\n";exp_continue}"yes/no*" {send "yes\n";exp_continue}eof {exit}}EOF
}#在远程主机2上将内容追加到authorized_keys
Put_pub()
{expect << EOFspawn ssh $dst_user@$dst_host "mkdir -p /root/.ssh;chmod 700 /root/.ssh;cat /root/.ssh/$src_host >> /root/.ssh/authorized_keys;chmod 600 /root/.ssh/authorized_keys"expect {"password:" {send "$dst_passwd\n";exp_continue}"yes/no*" { send "yes\n";exp_continue}eof{exit}}
EOF
}Keygen
Get_pub
Put_pub

使用格式：

./ssh-turst.sh 192.168.1.1 root 123456 192.168.1.2 root 123456

当然也可以把这些主机IP，用户名，密码写入到一个config.ini文件里

192.168.1.1 root 123456 192.168.1.2 root 123456

192.168.1.1 root 123456 192.168.1.3 root 123456

然后使用xargs命令

xargs -n6 ./ssh-trush.ssh < config.file