control timeout of exec {fd}</dev/tcp/google.com/8242

[Peng Yu]

Hi,

When a host is on, but a port is not on, exec commands like the
following will take some time before it returns. How can I control the
timeout so that it returns earlier if the port is nonresponsive?
Thanks.

$ time exec {fd}</dev/tcp/google.com/8242
-bash: connect: Operation timed out
-bash: /dev/tcp/google.com/8242: Operation timed out

real    1m15.055s
user    0m0.001s
sys    0m0.004s

-- 
Regards,
Peng