批量檢測網絡端口狀态

可以應用于域名證書檢測和網絡端口檢測

for line in `cat /app/sh/test.txt`
do
  nc -w 10 -z $line 443
  if [ $? -eq 0 ];then
    echo $line >> /app/sh/test-ok.txt
  else
    echo $line >> /app/sh/test-fail.txt
  fi
done