ubuntu: shell编程（扫描局域网内的IP地址，分别将与当前主机连通的IP和非连通的IP放入文件）

#!/bin/bash for ip in {1..254} do ping -c 2 -i 0.3 -w 1 10.131.147.$ip &>/dev/null if [ $? -eq 0 ] then echo "10.131.147.$ip" >>connected.txt else echo "10.131.147.$ip" >>disconnected.txt fi done