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Almost same output with fewer typing... OP had a great idea : BOFH !!!
Super fast way to ftp/telnet/netcat/ssh/ping your loopback address for testing. The default route 0.0.0.0 is simply reduced to 0.
I'm flat-out surprised that minecraft directory services require servers install multiple modifications to their server code, when the directories could fetch this information on their own.
Gets a BOFH excuse from the BOFH excuse server (towel.blinkenlights.nl port 666), and passes it through sed and tr to get rid of telnet connection stuff.
Gives you an updating woot! item tracker!
You are stuck with testing a tcp port using telnet, and must kill the telnet session from another terminal... Or, press ctrl+5 and write close/quit to force the current connection to close..
I must monitorize a couple of ftp servers every morning WITHOUT a port-scanner
Instead of ftp'ing on 100 ftp servers manually to test their status I use this loop.
It might be adaptable to other services, however it may require a 'logout' string instead of 'quit'.
The file ftps.txt contains the full list of ftp servers to monitorize.
This will start a netcat process listening on port 666. If you are able connect to your your server, netcat will receive the data being sent and spit it out to the screen (it may look like random garbage, so you might want to redirect it to a file).
Use Ctrl-] to stop it.
Telnet will make a tcp connection to a remote ip/port to test connectivity. If it times out, it's not reaching the host (maybe the firewall is blocking it). If connection is refused, it's reaching the host, but either the service is not listening on that port, or it's locked.