Telnet to a port on a remote machine without ncat or telnet, or nmap

There are situations where you may be working on Linux based system, and telnet, ncat or nmap does not exist. In Linux, you can route a test thru the protocol, destination IP address, and destination  port using the “/dev” linux ‘pseudo device’  The ‘telnet’ command we are all familiar with is essentially a wrapper for

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