https://github.com/8dcc/snc

Simple netcat(1) and ncat(1) alternative over TCP
https://github.com/8dcc/snc

c cli network productivity sockets

Last synced: 8 months ago
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Simple netcat(1) and ncat(1) alternative over TCP

• Host: GitHub
• URL: https://github.com/8dcc/snc
• Owner: 8dcc
• License: gpl-3.0
• Created: 2023-07-16T11:26:33.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2025-07-06T16:34:17.000Z (12 months ago)
• Last Synced: 2025-07-20T03:18:05.068Z (11 months ago)
• Topics: c, cli, network, productivity, sockets
• Language: C
• Homepage:
• Size: 119 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.org
  • License: LICENSE

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README

          
#+TITLE: snc

#+AUTHOR: 8dcc

#+OPTIONS: toc:nil

#+STARTUP: showeverything

Simple =netcat(1)= and =ncat(1)= alternative over TCP.

See also my [[https://8dcc.github.io/programming/netref.html][C Network Programming Reference]].

* Building

To build the project, simply clone the repository and run =make=.

#+begin_src console

$ git clone https://github.com/8dcc/snc

$ cd snc

$ make clean all

...

#+end_src

Optionally, if you want to install the program in your system, use the =install=

target.

#+begin_src console

$ sudo make install

...

#+end_src

* Usage

The help can be shown with the =--help= option.

#+begin_src console

$ snc --help

Usage: snc [OPTION...]

 Mode arguments

  -r, --receive              Receive data from incoming transmitters.

  -t, --transmit=DESTINATION Transmit data into the DESTINATION receiver.

 Optional arguments

  -p, --port=PORT            Specify the port for receiving or transferring

                             data.

      --print-interfaces     When receiving data, print the list of local

                             interfaces, along with their addresses. Useful

                             when receiving data over a LAN.

      --print-peer-info      When receiving data, print the peer information

                             whenever a connection is accepted.

      --print-progress       Print the size of the received or transmitted data

                             to 'stderr'.

  -?, --help                 Give this help list

      --usage                Give a short usage message

Mandatory or optional arguments to long options are also mandatory or optional

for any corresponding short options.

Report bugs to <8dcc.git@gmail.com>.

#+end_src

To receive data from another machine, start the program in /receive/ mode. It will

start to listen, and print received data to =stdout=.

#+begin_src console

$ snc --receive

...

$ snc -r > output.txt

#+end_src

To transmit data to another machine, start the program in /transmit/ mode. It will

read data from =stdin=, transmit it to the specified IP address.

#+begin_src console

$ snc --transmit "IP"

Type stuff here!

...

It will send it to the receiver.

$ snc -t "IP" < input.txt

#+end_src

You may specify a port when receiving and transmitting data, so you can connect

to an [[https://nmap.org/ncat/][ncat]] instance by using its port (by default 31337).