Menu
I have to connect to a remote server via telnet and want to send file input there.
This is a processor emulator (MCF68k), so I can't just scp the file to the server and run from there.
I can send input like this:
telnet host.name < input.file
Which will successfully transmit the data to the server and run the commands stored that I want. However, I need the telnet session to stay interactive (not terminate).
How do I pipe a file to a command, then return control of stdin to the terminal and keep the interactive session open?
Very Late Edit:
I think this can be done using expect:
man expect: http://www.manpagez.com/man/1/expect/
python wrapper: http://www.noah.org/wiki/pexpect
390
To exit the Telnet session, type Ctrl + ] on your keyboard. This changes the command prompt to show as telnet>. Back in the terminal, type in the word 'close' to close the session.
Wrap the telnet within an expect script that detects lack of input. It sends the escape sequence control-] to the telnet client to get the command prompt telnet> , and issues the command send nop (no-operation). I assume this is enough to keep the connection alive.
The default escape sequence is Ctrl-] for the telnet command, Ctrl-T for the tn command, or Ctrl-C for the tn3270 command.
Does cat input.file - | telnet host.name work?
71
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
