get output value from one perl to another

Question

I have a perl file which in turn calls another perl file. I am expecting output from second perl file. How would I get the output ? Here is what my sample code looks like.

datetimetest.pl

!/usr/bin/perl
use DateTime;
print DateTime->now()->strftime("%a, %d %b %Y %H:%M:%S %z");
print "\n";

my @perloutput = `/usr/bin/perl knowusername.pl`;
print "output:$perloutput[0]\n";
print "output 2: $perloutput[1]\n";

print "output 3: $perloutput[2]\n";

knowusername.pl

#!/usr/bin/perl
print $ENV{"LOGNAME"}."\n";

print "secondoutput\n";

print "thirdoutput\n";

I have edited answer above.

Take a look at this question: stackoverflow.com/questions/364842/… — arkascha
– arkascha, Commented May 30, 2013 at 8:24
@arkascha , how does that link help in my question ? I want to have output from one file to another file. — tech_enthusiast
– tech_enthusiast, Commented May 30, 2013 at 8:27
Sorry, did you even bother to read the first answer in that question? It is about script output to stdout and how to capture it. — arkascha
– arkascha, Commented May 30, 2013 at 8:28
You're missing the # in your shebang line. Most likely a copy-paste error. Otherwise, this works for me. — chrsblck
– chrsblck, Commented May 30, 2013 at 8:31
@arkascha, I did look at the first answer, but my question is how do I pass output ? The answer shows how to capture them, not to pass them. — tech_enthusiast
– tech_enthusiast, Commented May 30, 2013 at 8:34

chrsblck · Accepted Answer · 2013-05-30 08:42:23Z

1

First of all, always use use warnings; use strict;

Which would have caught your main issue here.

$output should be $perloutput

print "output:$perloutput[0]\n";
print "output 2: $output[1]\n";

print "output 3: $output[2]\n";

answered May 30, 2013 at 8:42

chrsblck

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