Linux.com: CLI Magic: netcat

“The response to my recent sysadmin toolbox article has been
overwhelming. By far, readers’ number one suggestion was to replace
Telnet with netcat. Here then is an introduction to netcat for
Linux users who may not be familiar with the ‘TCP/IP Swiss Army
knife.’

“In the simplest terms, netcat is a utility that reads and
writes data across the network. As you probably know already, you
can write to a file or read from a file on your local machine using
the cat utility. By running cat filename >
filename2, you can write the contents of a file to
another file. By using cat > filename, you
can write directly to a file from standard input…”

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