ping -c2 -i0.02 www.baidu.com > /dev/null 2>&1

echo $?

#!/bin/bash
# test.ping -c2 -i0.02 www.baidu.com > /dev/null 2>&1
if [ $? -eq 0 ];thenecho "Host can access ...."
else...
fi

(sleep 1;) | telnet www.baidu.com 80

#!/bin/bash
# test.host= www.baidu.com
port=80
telnet_file=/tmp/telnet_file.txtping -c2 -i0.02 $host > /dev/null 2>&1
if [ $? -eq 0 ];thenecho "$host can access ...."
else(sleep 1;) | telnet $host $port > $telnet_filegrep -B 1 \] $telnet_file > /dev/null 2>&1if [ $? -eq 0 ];thenecho "$host can access ..."elseecho "$host can not access !!!"    fi
fi

renxiaowei$ cat check.sh#!/bin/bash
# 功能：一键检测宿主机、虚拟机是否存活
# 作者：任小为
# 版本：v1.0file=server.txt
result_base=/tmp/check_host_netrm -rf $result_base
mkdir -p $result_basesuper_host(){super_ip_list=${result_base}/super_ip_list.txtsuper_alive=${result_base}/super_alive.txtsuper_die=${result_base}/super_die.txtsuper_telnet=${result_base}/super_telnet.txtecho ""echo -e "\033[44;36m检测宿主机是否存活... \033[0m"egrep -v "#|^$" $file | awk '{print $1,$2}' | uniq > $super_ip_listcount=0for ip in $(cat ${super_ip_list} | awk '{print $1}');dolet count++echo "count=$count"ping -c 2 -i 0.02 $ip > /dev/null 2>&1if [ $? -eq 0 ];thenecho $ip >> ${super_alive}elsesuper_port=`grep $ip ${super_ip_list} | awk '{print $2}'`(sleep 1;) | telnet $ip ${super_port} >> ${super_telnet}fidoneif [ -e ${super_telnet} ];thensuper_ip=${result_base}/super_ip.txtcat ${super_ip_list} | awk '{print $1}' > ${super_ip}cat ${super_telnet} | grep -B 1 \] | grep [0-9] | awk '{print $3}' | cut -d '.' -f 1,2,3,4 >> ${super_alive}cat ${super_ip} ${super_alive} | sort | uniq -u > ${super_die}fiecho ""echo -e "\033[32;49;1m存活的宿主机: \033[31;49;0m"echo -e "`cat ${super_alive}`\n"if [ -s ${super_die} ];thenecho -e "\033[31;49;1m检测不通的宿主机:\033[31;49;0m"echo -e "\033[31;49;1m`cat ${super_die}`\033[31;49;0m\n"elseecho -e "\033[44;36m所有宿主机都存活.\033[0m\n"fi
}sub_host(){sub_ip_list=${result_base}/sub_ip_list.txtsub_alive=${result_base}/sub_alive.txtsub_die=${result_base}/sub_die.txtsub_telnet=${result_base}/sub_telnet.txtecho ""echo -e "\033[44;36m检测虚拟机是否存活... \033[0m"egrep -v "#|^$" $file | awk '{print $3,$4}' | uniq > $sub_ip_listsub_count=0for sub_ip in $(cat ${sub_ip_list} | awk '{print $1}');dolet sub_count++echo "count=${sub_count}"ping -c 2 -i 0.02 ${sub_ip} > /dev/null 2>&1if [ $? -eq 0 ];thenecho ${sub_ip} >> ${sub_alive}elsesub_port=`grep ${sub_ip} ${sub_ip_list} | awk '{print $2}'`(sleep 1;) | telnet ${sub_ip} ${sub_port} >> ${sub_telnet}fidoneif [ -e ${sub_telnet} ];thensub_ip=${result_base}/sub_ip.txtcat ${sub_ip_list} |awk '{print $1}' > ${sub_ip}cat ${sub_telnet} | grep -B 1 \] | grep [0-9] | awk '{print $3}' | cut -d '.' -f 1,2,3,4 >> ${sub_alive}cat ${sub_ip} ${sub_alive} | sort | uniq -u > ${sub_die}fiecho ""echo -e "\033[32;49;1m存活的虚拟机: \033[31;49;0m"echo -e "`cat ${sub_alive}`\n"if [ -s ${sub_die} ];thenecho -e "\033[31;49;1m检测不通的虚拟机:\033[31;49;0m"echo -e "\033[31;49;1m`cat ${sub_die}`\033[31;49;0m\n"elseecho -e "\033[44;36m所有虚拟机都存活.\033[0m\n"fi
}case $1 insuper)super_host;;vm)sub_host;;help)echo ""echo "`grep "功能" $file`"echo "super选项代表检测宿主机;"echo -e "vm选项代表检测虚拟机.\n";;*)echo ""echo -e $"Usage: sh $0 { super | vm | help }\n"
esac
exit 0

renxiaowei$ cat server.txt
#功能：用于一键检测宿主机、虚拟机是否存活的文件
#格式：vm宿主机 ------ 宿主机管理端口 ---- 虚拟机 ---- 虚拟机管理端口192.168.2.2           80            192.168.2.50     22
192.168.2.3           80            192.168.2.51     22192.168.3.2           80            192.168.3.52     22