Re: BASH Scripting

Why not just return SIDS?
instead of
        echo "SIDS is $SIDS"
use return
    return "$SIDS"

and set the output of your grep and pipe to the return value?

# !/bin/sh
#SIDS=""
SIDS=`grep -v '^#' /etc/oratab | while read LINE
do
      ISID=`echo $LINE | cut -f1 -d:`
      OHOME=`echo $LINE | cut -f2 -d:`
      OBOWNER=`ls -l $OHOME/bin/sqlplus | awk '{print $3}'`
      SIDS=`echo "$SIDS $OBOWNER:$ISID"`
      echo "SIDS is $SIDS"
done`
      echo SIDS is  $SIDS
      echo "OBOWNER is  $OBOWNER"

Mark

Pete Peterson wrote:

>>From: Aaron Konstam <[email protected]>
>>To: [email protected]
>>Subject: Re: BASH Scripting
>>
>>On Tue, Mar 18, 2003 at 05:17:08PM -0000, David Nithakorne wrote:
>>    
>>
>>>I am trying to set the value of SIDS in the following script to
>>>something other than "". It seems that once out of the do/done block the
>>>value od $SIDS reverts back to ""....why is this and how can I get $SIDS
>>>to keep its new value opnce out of the do/done block. 
>>>
>>># !/bin/sh
>>>SIDS=""
>>>grep -v '^#' /etc/oratab | while read LINE
>>>do
>>>      ISID=`echo $LINE | cut -f1 -d:`
>>>      OHOME=`echo $LINE | cut -f2 -d:`
>>>      OBOWNER=`ls -l $OHOME/bin/sqlplus | awk '{print $3}'`
>>>      SIDS=`echo "$SIDS $OBOWNER:$ISID"`
>>>      echo "SIDS is $SIDS"
>>>done
>>>      echo SIDS is  $SIDS
>>>      echo "OBOWNER is  $OBOWNER"
>>>
>>>the /etc/oratab file is: - 
>>>
>>>LD4U:/opt/oracle/product/9.2.0:Y 
>>>oem:/opt/oracle/product/9.2.0:Y 
>>>ld4udev:/opt/oracle/product/9.2.0:Y 
>>>
>>>Thanks
>>>
>>>David
>>>
>>>      
>>>
>>Just export $SIDS after it is defined.
>>-------------------------------------------
>>Aaron Konstam
>>    
>>
>
>How can that work?  The export allows referencing the variable
>in the children of the defining process, but the child can't change the
>environment of the parent.
>
>  
>