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I have a server that accept telnet connections for management. I miss the command history so I want to make my telnet session support it. My questions:
1) Do I have to implement that on the server side, so the server will send the past commands to the client and then the client can re-execute?
2) Is there anyway to implement this functionality in the telnet client (not messing with the server) ?
If answer is 1) then I need to know how to capture and send the up and down arrow keys on my telnet session without having to press enter.
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The user connects to the server by using the Telnet protocol, which means entering Telnet into a command prompt by following this syntax: telnet hostname port. The user then executes commands on the server by using specific Telnet commands into the Telnet prompt.
Telnet is a type of client-server protocol that can be used to open a command line on a remote computer, typically a server. Users can utilize this tool to ping a port and find out whether it is open.
This isn't a server issue. Just use rlwrap with your telnet client. It gives you readline with no programming.
$ rlwrap telnet server port
(I actually use nc instead of telnet since it is easier to use and is more robust.)
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use socat:
socat readline,history=$HOME/.telnet_history TCP:host:23
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