Secuencias de escape en SSH:
user@remotehost:~$ ~?
Supported escape sequences:
~. - terminate connection (and any multiplexed sessions)
~B - send a BREAK to the remote system
~C - open a command line
~R - Request rekey (SSH protocol 2 only)
~^Z - suspend ssh
~# - list forwarded connections
~& - background ssh (when waiting for connections to terminate)
~? - this message
~~ - send the escape character by typing it twice
(Note that escapes are only recognized immediately after newline.)
La primera, ~., se puede utilizar para cerrar la sesión cuando se nos
queda colgada, por ejemplo, al reiniciar la máquina remota.
Podemos hacer que nos muestre una consola:
user@remotehost:~$ ~C
ssh> help
Commands:
-L[bind_address:]port:host:hostport Request local forward
-R[bind_address:]port:host:hostport Request remote forward
-D[bind_address:]port Request dynamic forward
-KR[bind_address:]port Cancel remote forward
O que nos muestre las conexiones abiertas:
user@remotehost:~$ ~#
The following connections are open:
#1 client-session (t4 r0 i0/0 o0/0 fd 5/6 cc -1)
Si estamos compartiendo una conexión SSH, y nos conectamos desde otro terminal, veremos algo parecido a esto:
user@remotehost:~$ ~#
The following connections are open:
#1 client-session (t4 r0 i0/0 o0/0 fd 5/6 cc -1)
#3 client-session (t4 r1 i0/0 o0/0 fd 9/10 cc 2)