Oracle-L: Re: Slightly OT: Perl Q.

From: <Brian_P_MacLean_at_eFunds.Com>
Date: Wed, 03 Apr 2002 07:33:32 -0800
Message-ID: <F001.00439F62.20020403073332@fatcity.com>

You didn't specify the shell you are using but because of the ". file" syntax I'll ass|u|me you are using sh or ksh. I will also ass|u|me you have the correct perl code. It would have been nice if you included an example of your setup code and perl code but....oh well. The correct way to set up environment variables (for the shells I have used) so that child process can see a variable is:

     csh  ->   setenv MY_VAR value
     sh   ->   MY_VAR=value; export MY_VAR
     ksh  ->   export MY_VAR=value

Once you think you have the variables set the easiest way to check if they are propagated to child processes is to start a sub-shell and have it echo the variables like so:

     oracle> MY_VAR1=var1_value
     oracle> export MY_VAR2=var2_value
     oracle> echo MY_VAR1=${MY_VAR1} MY_VAR2=${MY_VAR2}
     MY_VAR1=var1_value MY_VAR2=var2_value
     oracle> ksh -c 'echo MY_VAR1=${MY_VAR1} MY_VAR2=${MY_VAR2}'
     MY_VAR1= MY_VAR2=var2_value
     oracle>

I'm not a big perl person but here is a perl example:

     oracle> MY_VAR1=var1_value
     oracle> export MY_VAR2=var2_value
     oracle> /tmp/env.pl | grep MY
     MY_VAR2 = var2_value
     oracle> export MY_VAR1
     oracle> /tmp/env.pl | grep MY
     MY_VAR1 = var1_value
     MY_VAR2 = var2_value
     oracle> cat /tmp/env.pl
     #!/usr/local/bin/perl
     foreach $key (sort keys(%ENV))
     {
       print "$key = $ENV{$key}\n";
     }
     oracle>

Brian P. MacLean
Oracle DBA, OCP8i

                                                                                                                           
                    "Jack van                                                                                              
                    Zanen"               To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>               
                    <nlzanen1_at_EY.N       cc:                                                                               
                    L>                   Subject:     Slightly OT: Perl Q.                                                 
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                    root_at_fatcity.c                                                                                         
                    om                                                                                                     
                                                                                                                           
                                                                                                                           
                    04/03/02 01:53                                                                                         
                    AM                                                                                                     
                    Please respond                                                                                         
                    to ORACLE-L

Hi All (Jared in particular),

OS: AIX
We are trying the following:

We have a script that executes and sets all sorts of environment variables. Than after this we execute a perl script that reads the environment variables, however the environment variables set in the first script are not picked up.
We tried executing the variables script with [ . script] (dot space scriptname) as well but still no luck.

How can we make the perl script pick up these variables?

TIA and sorry for the OT but I am not using perl so much as to join another mailing list

Jack

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Author: Jack van Zanen
INET: nlzanen1_at_EY.NL

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