linux的netcat命令行工具

一、 内部帮助
root@router:~# nc
BusyBox v1.28.1 (2018-04-03 17:06:42 CST) multi-call binary.

Usage: nc [OPTIONS] HOST PORT  - connect
nc [OPTIONS] -l -p PORT [HOST] [PORT]  - listen

        -e PROG Run PROG after connect (must be last)
        -l      Listen mode, for inbound connects
        -lk     With -e, provides persistent server
        -p PORT Local port
        -s ADDR Local address
        -w SEC  Timeout for connects and final net reads
        -i SEC  Delay interval for lines sent
        -n      Don't do DNS resolution
        -u      UDP mode
        -v      Verbose
        -o FILE Hex dump traffic
        -z      Zero-I/O mode (scanning)

二、Linux的网卡162.168.8.1启动tcp服务器，监听端口20000

三、Linux的网卡162.168.8.1启动udp服务器，监听端口20000

 

四、Linux的网卡162.168.8.1启动udp客户端，连接udp服务器162.168.8.113的端口10000