Castle released RISC OS 5.13 this weekend, its first free update since the paid-for release of 5.12. The ROM image can be fetched from Castle’s iyonix.com website. The new version of their 32bit stream of the operating system is the result of a bug fixing exercise: its ‘key features’ are two updates for the Filer, two updates for the Pinboard, a fix for the Display Manager, an update for the Repeat command, a fix within the Shared C Library module, an update for the BASIC assembler, and a fix for the EtherK network driver.

netcat, or sometimes the command known as nc capable of doing a lots of thing. The examples of how to use nc to scan open ports showing here.

Here, using netcat to initiate a private chat, we need a listener server with open port and a client connect to the listener server.

Listener: (IP: 192.168.1.1)

nc -l -p 5678

-l is listen, -p is to specify port.

Client:

nc 192.168.1.1 5678

Okay, both side can start chatting.

The same way for file transfer. Let say listener server as a file receiver and client as a sender.

Listener: (Receiver)

nc -vv -l -p 5678 > dump.mp3

-vv is make the transaction very verbose, so that you will know what is happening.

Client: (Sender)

nc 192.168.1.1 5678 < dump.mp3 

File transfer using nc usually fast, because it do not do encryption/decryption over the communication. It is good for transfer file from point to point or in LAN. You can do it over internet but you need to make sure you have do port forwarding on the listener port.

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This tutorial shows how to set up a fileserver for small and medium enterprises with SME Server 7.1. SME Server is an open-source Linux server distribution (released under the GPL) based on CentOS that can turn a computer into a gateway, firewall, fileserver, printserver, mailserver (including webmail), etc. In this article we will focus on the fileserver aspect of SME Server. Read more…