ExitSignal property holds result code sent by SSH server when
remote command was
terminated violently due to a signal. Empty property usually means
that command terminated successfully. ExitSignal will hold data in
the format:
SIGNAL C EXPLANATION
SIGNAL can be one of these: ABRT ALRM FPE HUP ILL INT KILL
PIPE QUIT SEGV TERM USR1 USR2
(additional signal names may be send in the format sig-name@xyz)
C will hold 1 if core was dumped (0 otherwise)
EXPLANATION will hold text description of the error
message, may consist of multiple lines. You can choose to display
this error to the user.
NOTE: this property is used only in SSH protocol.