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Full Discussion: Export variable, as a background process
Top Forums Shell Programming and Scripting Export variable, as a background process Post 302447746 by Cranie on Tuesday 24th of August 2010 06:54:10 AM
Old 08-24-2010
Export variable, as a background process
Have a script where I need to wait for a process to run, but from that process I want to capture the row count.

Script I have so far (easier than explanation):

Code:
echo "Start"
export NUMROWS=`td "select * from dbc.database" 2> /dev/null | 
    grep "Query completed" | sed -e 's/.*Query completed. //g' -e 's/row.*found.*//g'` & 
WAITPID=$!
echo $NUMROWS
ps -ef | grep $WAITPID
wait $WAITPID
echo $NUMROWS

What I need is the export to run, in the background, the script to wait for that to run and then return the row count (this is the start of a script which will kill the WAITPID and processes associated if it runs for longer than a specified time.

Would be easy if I didn't need the export... ideas?

I could use temp files, but would rather not.
Last edited by Cranie; 08-24-2010 at 08:00 AM..
 

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LEARN ABOUT HPUX

parse_dynamic_clustertoc

parse_dynamic_clustertoc(1M)                              System Administration Commands                              parse_dynamic_clustertoc(1M)

NAME

       parse_dynamic_clustertoc - parse clustertoc file based on dynamic entries

SYNOPSIS

       cdrom/export/exec/sparc.Solaris_2.x/sbin/install.d/parse_dynamic_clustertoc

       cdrom/export/exec/i386.Solaris_2.x/sbin/install.d/parse_dynamic_clustertoc

DESCRIPTION

       This script parses the  clustertoc file before the suninstall(1M) process is run.  parse_dynamic_clustertoc is called by a modified syscon-
       fig script on the install CD.  When parse_dynamic_clustertoc runs, it reads the clustertoc and when it encounters SUNW_CSRMBRIFF lines,  it
       either  checks  the  platform  using the script's builtin function, or calls an external script.  The script exits with  a 0 if the cluster
       entry is included,  otherwise it will be ignored.  If the cluster entry is to be included, the SUNW_CSRMBRIFF =(test test_arg)cluster  line
       is converted to SUNW_CSRMEMBER =cluster.

EXAMPLES

       Example 1: Checking For an SX Framebuffer

       The  following is an example of a simple external test to check for an SX Framebuffer.  The entry in the  clustertoc file is shown and fol-
       lowing that is the script that must be placed in the  install.d/dynamic_test directory.

       SUNW_CSRMBRIFF=(smcc.dctoc sx)SUNWCsx
       #! /bin/sh
       #
       # Likewise, this file is expected to live under $(TESTDIR).
       #
       case "$1"
       in
               sx)     prtconf -p  | grep 'SUNW,sx' 1> /dev/null;;
       esac

FILES

       cdrom/Solaris_2.x/locale/C/.clustertoc.dynamic

           Dynamic version of the  clustertoc file

       cdrom/export/exec/sparc.Solaris_2.x/sbin/install.d/dynamic_test

           Directory that contains any additional tests

       cdrom/export/exec/i386.Solaris_2.x/sbin/install.d/dynamic_test

           Directory that contains any additional tests

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SHWPcdrom (Solaris CD)       |
       +-----------------------------+-----------------------------+

SEE ALSO

       suninstall(1M), clustertoc(4), attributes(5)

SunOS 5.10                                                          6 Sep 1995                                        parse_dynamic_clustertoc(1M)
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