shell script中使用telnet命令測試TCP端口

命令行方式 TCP端口未打開 [root@bee-a ~]# telnet 127.0.0.1 23 Trying 127.0.0.1... telnet: connect to address 127.0.0.1: Connection refused TCP端口已打開 [root@bee-a ~]# telnet 127.0.0.1 22 Trying 127.0.0.1... Connect

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