in reply to Directing STDOUT of called perl script to a variable within a calling perl script

IPC::System::Simple would be a good way to handle this. 
#!/usr/bin/perl 

use strict;
use warnings;
use IPC::System::Simple qw/capturex/;

my $cap = capturex("perl", "/root/Desktop/abc.pl");
die "Couldn't capture output: $!" unless $cap;
print $cap;

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