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Full Discussion: Handling Stdout&StdErr for background jobs.
Operating Systems Solaris Handling Stdout&StdErr for background jobs. Post 302200928 by alvinbush on Friday 30th of May 2008 10:32:10 AM
Old 05-30-2008
Handling Stdout&StdErr for background jobs.
Hello Friends,

sorry, i am not very familiar with Unix programming. Could you please help me on this?

We have to start different components from a startup script.

each components are started as below in the background in a startprocess function

$nohup $file $args >>$logFile 2>&1 &

after this the script calls some waiting method and waits in the logfile for some particular string as below

if grep -c "$pattern" $logFile>1; then ....

and go ahead with the next component.


We have now the problem that the background jobs continue writing into the log file even after startup and covering the disk space.
I am looking for a way to redirect the stdout of the background jobs to dev/null immediately after finding the successful start entry in the log.



Thanks in advance,

Alvin
 

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LEARN ABOUT SUNOS

atq

atq(1)								   User Commands							    atq(1)

NAME

       atq - display the jobs queued to run at specified times

SYNOPSIS

       atq [-c] [-n] [username...]

DESCRIPTION

       The  atq  utility  displays the at jobs queued up for the current user. at(1) is a utility that allows users to execute commands at a later
       date. If invoked by a user with the solaris.jobs.admin authorization, atq will display all jobs in the queue.

       If no options are given, the jobs are displayed in chronological order of execution.

       When an authorized user invokes atq without specifying username, the entire queue is displayed; when a username is  specified,  only  those
       jobs belonging to the named user are displayed.

OPTIONS

       The following options are supported:

       -c	Displays the queued jobs in the order they were created (that is, the time that the at command was given).

       -n	Displays only the total number of jobs currently in the queue.

FILES

       /var/spool/cron/atjobs	       spool area for at jobs.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       at(1), atrm(1), auths(1), cron(1M), auth_attr(4), attributes(5)

SunOS 5.10							    13 Aug 1999 							    atq(1)
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