On the impossibility to use escape sequences when the networks hangs

[Dennis Clarke]

On 10/13/25 18:03, Steffen Nurpmeso wrote:
> Hello.
> 
> In short: how does one control an interactive connection that
> currently is incapable to send/receive data?  ssh just hangs.

What happens if you try :

     $ ssh -e\^ -l someusername remotehost

I use that sort of thing all the time. The manpage says :

     -e escape_char
         Set the escape character for sessions with a pty (default: '~').
         The escape character is only recognized at the beginning of a
         line.  The escape character followed by a dot (‘.’) closes the
         connection; followed by control-Z suspends the connection; and
         followed by itself sends the escape character once. Setting the
         character to “none” disables any escapes and makes the session
         fully transparent.

That escape character *should* be processed by the client side. Unless I
am confused about the question.


-- 
--
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken