On Sat, 18 Oct 2003 01:10:08 -0400
Steve Grazzini <[EMAIL PROTECTED]> wrote:
> > system("ENVVAR=whatever; export ENVVAR; command");
>
> You don't need the export.
You do if it you want to make ENVVAR exportable to the children of the
forked shell. Otherwise it is a normal shell variable.
> $FOO goes in the child's environment, but not the parent's. And
> since environment variables aren't shell-specific (like the OP's
> aliases) you can also set them from Perl.
>
> $ENV{FOO} = 'whatever';
> system qw(echo $FOO);
Correct. However, you may only want them set in the child. I was really
demonstrating that the command string passed to system is interpreted by
the subshell.
> > system("ksh -c \"export TEST=hello; echo \\\$TEST\"");
> >
> > Note the quoting gets really convoluted
>
> No kidding... Sometimes the list form of system() makes this easier,
> and non-interpolating quotes always help.
>
> system qw(ksh -c), 'TEST=hello; echo $test';
Good point. This does make it easier to read. In your example $test
should be $TEST.
---
Smoot Carl-Mitchell
Systems/Networking Consultant
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