Linux shell ping脚本

#!/bin/sh
while true
do
  ping -c1 -W1 192.168.56.100 > /dev/null
  if [[ $? != 0 ]];then
          date >> /tmp/`hostname`.ping.out
          echo "ping 192.168.56.100 failed." >> /tmp/`hostname`.ping.out
  else
          date >> /tmp/`hostname`.ping.out
          echo "ping 192.168.56.100 success." >> /tmp/`hostname`.ping.out
  fi
  sleep 1
done

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Linux