Shell Programming and Scripting

HI all,

I have armv7 board and i will execute script in host machine with ssh connection from board .

I have to test when board in standby mode the script runned in host remain working .
The result is the reverse when kernel is in standby mode on board.
SSH connection closed and the script end .

Any sugestion please

Thanks

Hi,

There are two things that you can try;

The first is to check if there is a "tcp keep alive" available on the connection - this will be a session setting.

The next thing is to check if the OS on the armv7 (Which you don't mention) supports something like "nohup".

Regards

Dave

yes
this is the value of net.ipv4.tcp_keepalive_intvl = 75

and my OS support nohup .

OK,

Then both the following options would be open to you, you should choose the one that suits your requirements.

For the tcp keep alive,

This normally will keep the session alive when there is no interaction i.e. no keystrokes in e terminal session or screen traffic. It is normally set as seconds - so it seems to be currently set to 75 seconds. You should check the acceptable parametesr and adjust to suit your requirements, within the parameters if you can.

Nohup is something different;

It is normally used to run something from a terminal session, but gives the flexibility to disconnect the session without the process dying as well - however if there is output required from the script it should go to some kind of log file.

Normally used as follows - but without the quotes.

Code:

user $> nohup "my/script/is/here > "my/logfile/is/here" 2>&1

Although you may wish to handle logging and error loging in the script.

Regards

Dave