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Help with eval usage for string containing Environment Variable


 
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# 1  
Old 09-13-2009
Help with eval usage for string containing Environment Variable

Help !!

First, Thanks in Advance

Here is what I have

I have an environment Variable, let's call it v_VALUE.
v_VALUE="\$ORACLE_HOME/bin" Hence, the location is ORACLE_HOME is not evaluated. ORACLE_HOME happens to be /app/oracle/product/10.1.2

I need a method of returning the evaluated string.
I tried
v_VALUE="\$ORACLE_HOME/bin"
v_EVALUATED=`eval $v_VALUE`

I want v_EVALUATED to contain /app/oracle/product/10.1.2/bin

I'm trying to create a generic script and the value of ORACLE_HOME is dynamic and will be contained in a config file, hence, the need to evaluate on the fly

Thanks !!
# 2  
Old 09-13-2009
Quote:
Originally Posted by dhangliter
...
ORACLE_HOME happens to be /app/oracle/product/10.1.2
...
So we have:

Code:
$ 
$ ORACLE_HOME=/app/oracle/product/10.1.2
$ echo $ORACLE_HOME
/app/oracle/product/10.1.2
$

Quote:
...
I want v_EVALUATED to contain /app/oracle/product/10.1.2/bin
...
So, v_evaluated is set thusly -

Code:
$ 
$ v_evaluated=$ORACLE_HOME/bin
$ echo $v_evaluated
/app/oracle/product/10.1.2/bin
$ 
$

tyler_durden

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