# netcat
**netcat** (nc) is a linux command that can create raw TCP/UDP sockets and send data through them. Pretty cool!

🔹️ ``nc [options] hostname port``

Use ``netcat -t -l - 50555 < file.txt > /dev/null`` to be a SERVER and serve ``file.txt`` with TCP on port 50555.
Then use ``netcat IPADDDR 50555 > file_copy.txt`` to be a CLIENT and receive whatever IPADDR is serving at 50555 and save it as ``file_copy.txt``

Netcat has three modes: **connect**, **listen** and **tunnel**.