Keep connection alive between PC and board Post: 302915331

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Top Forums Shell Programming and Scripting Keep connection alive between PC and board Post 302915331 by gull04 on Tuesday 2nd of September 2014 10:34:10 AM

09-02-2014

Registered User

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

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pmpost

PMPOST(1)						      General Commands Manual							 PMPOST(1)

NAME

       pmpost - append messages to the Performance Co-Pilot notice board

SYNOPSIS

       $PCP_BINADM_DIR/pmpost message

DESCRIPTION

       pmpost will append the text message to the end of the Performance Co-Pilot (PCP) notice board file ($PCP_LOG_DIR/NOTICES) in an atomic man-
       ner that guards against corruption of the notice board file by concurrent invocations of pmpost.

       The PCP notice board is intended to be a persistent store and clearing house for important messages relating to the operation  of  the  PCP
       and the notification of performance alerts from pmie(1) when other notification options are either unavailable or unsuitable.

       Before  being  written,	messages are prefixed by the current time, and when the current day is different to the last time the notice board
       file was written, pmpost will prepend the message with the full date.

       If the notice board file does not exist, pmpost will create it.	pmpost would usually run from long-running PCP daemons executing under the
       (typically unprivileged) $PCP_USER and $PCP_GROUP accounts.  The file should be owned by root, and group writable by the $PCP_GROUP group.

FILES

       $PCP_LOG_DIR/NOTICES
		 the PCP notice board file

PCP ENVIRONMENT

       The file /etc/pcp.conf contains the local values for PCP_ variables.

UNIX SEE ALSO

       logger(1).

WINDOWS SEE ALSO

       pcp-eventlog(1).

SEE ALSO

       pmie(1), pcp.conf(5) and pcp.env(5).

Performance Co-Pilot							PCP								 PMPOST(1)