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}
doping -c 2 -i 0.3 -w 1 10.131.147.$ip &>/dev/nullif [ $? -eq 0 ]thenecho "10.131.147.$ip" >>connected.txtelseecho "10.131.147.$ip" >>disconnected.txtfi
done