This is quite a simple challenge. We would just need to install netcat and type that command into the terminal.

Netcat can be used for port scanning, port listening and using it as a backdoor to other networked systems, among other things. Click here for the cheat sheet for netcat.

Solution

1. Open up terminal and type in the command

   

Flag: flag{n3tc4t_1s_a_pip3_t0_the_w0rld}