Re: How to set environment variable

can't you set the environmental variables for the parent shell
by running a script as a . or here file?



-----Original Message-----
From: Jeff Pang <rwwebs@xxxxxxxxx>
Sent: Sep 27, 2007 10:02 AM
To: vikram vikram vikram <vicky_brsh@xxxxxxxxxxxxxx>
Cc: beginners@xxxxxxxx
Subject: Re: How to set environment variable

27 Sep 2007 14:47:42 -0000, vikram vikram vikram <vicky_brsh@xxxxxxxxxxxxxx>:

Hi All,

I am new to perl. I am using "Active Perl-5.8.8"

I want to set environment variable in a perl script

Ex - #!/usr/bin/perl
$ENV{HAI} = "hai";


and want to display the contents of the environment variable in the command line after executing the script.

But it is not displaying the contents if i give
echo $HAI


Hi,

When you start to run a perl program,a separate process is
started,which is different from your current shell process.So you
can't set the environment variables from another process to the
current shell process.

you can do a test,
$ perl -MData::Dumper -e '$ENV{TEST}=1;print Dumper \%ENV'
this would print what you want.
but,
$ echo $TEST
will get nothing.

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