timeout可以实现当一个命令在规定时间内不返回就强制返回的功能 + 杀毒安装ClamAV nmap 速度 比Telnet 快

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[root@xiaowei ~]# cat telnetport.sh #!/bin/bash Port=25223 timeout 2 ssh root@127.0.0.1 "telnet   61.146.164.67  $Port " > /tmp/telnet$Port.txt timeout 2 ssh root@127.0.0.1 "telnet   61.146.164.67  $Port " >> /tmp/telnet$Port.txt timeout 2 ssh root@127.0.0.1 "telnet   61.146.164.67  $Port " >> /tmp/telnet$Port.txt       result=`grep -c 'Escape' /tmp/telnet$Port.txt` if [[ $result != 3 ]];then     echo "problem"         curl -d  "token=21bd1fb7f4fe5bbe86b5a03a9874c9061d144&room_name=22d13a924daf805b1&chat_im_users=&chat_content=from XIAOWEI test for alert" http://172.16.10.7:45101/outer/common/chat/room/sendmessage          fi参考：Telnet　　https://blog.csdn.net/weixin_39845407/article/details/81486041         Linux杀毒  https://blog.csdn.net/weixin_39845407/article/details/81780125