linux 查看端口命令

linux 查看端口命令
 
netstat -an 查看网络端口
netstat -an |grep -w 21
 
lsof -i :port,使用lsof -i :port就能看见所指定端口运行的程序,同时还有当前连接。
lsof -i :1521
 
nmap 端口扫描

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