#！/bin/bash

for x in{100..200}  ####区间为192.168.100.100-192.168.100.200

do 

x=$(($x-100))

if fping -c 1  192.168.100.$x >/dev/null 2>&1; ######   -c 1 
then
echo "学号为$x  在"
else
echo "学号为$x 不在"
fi
done