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Will report back IP address's of all hosts that are UP.
This will keep trying to reconnect your netcat connection
can be used with SSH or Telnet, just substitute nc for ssh or telnet
very useful for troubleshooting VPNs were you want to send continuous packets towards a destination to trace.
run this in another terminal, were xxxx is the process ID of the running dd process.
the progress will report on the original terminal that you ran dd on
Use ZSH instead of bash, typing .. will move you up one directory, without the need to alias it.