cat check_ssldate.sh
#!/bin/bash
array=(www.qq.com)

Time_left(){
  #过期时间
  time_GMT=$1
  # GMT时间转为时间戳
  timestamp_get=$(date -d "${time_GMT}" +%s)
  #当前时间
  curtime_GMT=$(date -u '+%b %d %T %Y GMT')
  timestamp_cur=$(date -d "${curtime_GMT}" +%s)
  #时间戳的差，单位秒
  left_s=`expr "${timestamp_get}" - "${timestamp_cur}"`
  left_day=`awk 'BEGIN{printf "%0.0f","'${left_s}'"/3600/24}'`
}

main(){
  #将$1转换为新的arr，不能直接使用常规的$1
  newarr=($@)
  echo "本次检查域名列表："${newarr[@]}
  echo "###########check start###########"
  for dm in  ${newarr[@]};do
    out=`echo | openssl s_client -servername $dm -connect $dm:443 2>/dev/null | openssl x509 -noout -dates 2>/dev/null|sed ":a;N;s/\n/ /g;ta"`
    expired=`echo $out|awk -F= '{print $NF}'`
    Time_left "${expired}"
    [[ -n "$out" ]]&&echo -n $dm "," $out&&echo " ,剩余天数：" ${left_day}
    [[ -z "$out" ]]&&echo $dm "," "empty"
  done
  echo "###########check stop###########"
}


#测试
main ${array[@]}