脚本内容如下

[root@localhost script]# cat for_scan_ip.sh
#!/bin/bash
IP=192.168.139
for i in {1..254};do
  {
    ping -W1 -c1 ${IP}.${i} &>/dev/null && echo "${ip} access!!"
    if [ $? -eq 0 ];then
      echo -e "${IP}.${i}\t通" >> ip_success.txt
    else
      echo -e "${IP}.${i}\t不通" >> ip_fail.txt
    fi
  }&
done
wait