Oops ,
Mine was a wild guess and I am sorry for that. The below test was
successful in setting environment variable ...
---------------- clip--------
#!/usr/bin/perl
use Env;
print "Before -->";
print %ENV;
print "\n";
$ENV{TEMP}="xxx";
print "After --> \n";
print %ENV;
print "\n";
system("echo $TEMP");
-----------------clip----------
Br
Arjun
Deserve before you desire
-----Original Message-----
From: Wiggins d'Anconia [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 19, 2005 9:20 AM
To: Mallik Arjun (WT01 - TELECOM SOLUTIONS)
Cc: [EMAIL PROTECTED]; beginners@perl.org
Subject: Re: set environment variables
"Because it's up-side down.
Why is that?
It makes replies harder to read.
Why not?
Please don't top-post." - Sherm Pendley, Mac OS X list
[EMAIL PROTECTED] wrote:
> Hi ,
> Try below.
> If you are using csh for executing perl script ------>
system("setenv
> TEMPHOME /tmp ");
> If your using bash for executing perl script ---------> $TEMPHOME =
> "/tmp";
>
> system("export $TEMPHOME");
>
>
> Arjun
>
> Deserve before you desire
>
>
Did you test it? The problem with this approach is that you are setting
the environment in the subshell of 'system', but as soon as you have set
that variable your 'system' returns, the subshell process is destroyed
and the "new" environment has disappeared again. You must set the
environment once in the same subshell as the command you wish to run in
that shell. Generally you have the way the other posters have shown, by
setting the environment in Perl and then allowing the subshell to
inherit that environment, or by passing multiple commands in a single
shell call, generally by separating them with a semi-colon.
It is because each call to 'system' creates its own exclusive subshell
that the more obvious,
system("export VAR=value");
system("some_other_command");
Does not work.
http://danconia.org
>
>
>
>
>
> -----Original Message-----
> From: Nishi Prafull [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, July 19, 2005 1:49 AM
> To: Perl Beginners List
> Subject: set environment variables
>
>
> Hi:
>
> I need to run a script noted by $cmd1 from within perl but before that
> i need to set the environment variable. how can i do it? I tried my
> $TEMPHOME = "/tmp"; system($cmd1);
>
> But the script still complains the $TEMPHOME is not set. Thanks.
>
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