shell 腳本 批量實現主機免密登錄

腳本功能

實現了批量導入公鑰到對方主機，實現ssh免密登錄。修改了/etc/ssh/ssh_config中的StrictHostKeyChecking 不檢查對方公鑰，第一次連接的時候，便不會問你是否保存公鑰

#!/bin/bash
#
#********************************************************************
#Author:		liuhao
#QQ: 			1921160095
#Date: 			2019-11-06
#FileName：		ip.sh
#Description：		The test script
#Copyright (C): 	2019 All rights reserved
#********************************************************************
read -p "請輸入起始ip: " beginip
read -p "請輸入結束ip: " endip
read -p "請輸入密碼: " mima
begarray=(${beginip//./ })
endarray=(${endip//./ })
if [ "${begarray[0]}" = "${endarray[0]}" -a "${begarray[1]}" = "${endarray[1]}" -a "${begarray[2]}" = "${endarray[2]}" ]; then
        [ -f /root/.ssh/id_rsa ] || ssh-keygen -P "" -f /root/.ssh/id_rsa &> /dev/null
	rpm -q sshpass &> /dev/null || yum install sshpass -y &> /dev/null
	sed -i '/Checking ask/c StrictHostKeyChecking no' /etc/ssh/ssh_config
	begin=${begarray[3]}
	end=${endarray[3]}
	while [ "${begarray[3]}" -le "${endarray[3]}" ];do
		if ping -c1 -w1 ${endarray[0]}.${endarray[1]}.${endarray[2]}.${begarray[3]} &> /dev/null ; then
		{
			if sshpass -p $mima ssh-copy-id -i  /root/.ssh/id_rsa.pub ${endarray[0]}.${endarray[1]}.${endarray[2]}.${begarray[3]} &> /dev/null ;then
				echo ${endarray[0]}.${endarray[1]}.${endarray[2]}.${begarray[3]} success >> success.txt
			else
				echo ${endarray[0]}.${endarray[1]}.${endarray[2]}.${begarray[3]} error >> error.txt
			fi
			echo ${begarray[3]}
		}&
		else
			echo  ${endarray[0]}.${endarray[1]}.${endarray[2]}.${begarray[3]} host is unreachable >> error.txt
		fi
		let begarray[3]++
	done
	wait
else
	echo 僅支持變動最後一位,範圍1~254
fi