Perl and waiting for execution of external program

jonas.andersson_at_rocketmail.com
Date: 01/19/05 

Date: 19 Jan 2005 07:14:38 -0800

Hi,

Sometimes, when running an external program through Perl, I run into
problems:

...
open (PROG, "|$MyProgram &> /dev/null") or die "cannot open
program"

print PROG "Load file $FileName\n";
print PROG "Calculate all\n";

close (PROG) or die "cannot close program";
...

It sometimes happens that Perl does not wait for the (lengthy)
calculations to finish, but tries to close the program prematurely. (At
least, that is what the symptoms look like).

Is there a way to force Perl to wait for the program to finish before
it tries to close it, however long it takes?

Thanks for your time,

JA

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