"my" variable @b masks earlier declaration in same scope at interact_perturb.pl line 56.
"my" variable @b masks earlier declaration in same scope at interact_perturb.pl line 60.
Global symbol "@activated" requires explicit package name at interact_perturb.pl line 45.
syntax error at interact_perturb.pl line 51, near "`awk '\$1 ~ /$_[0]/' useful_dat.tab |cut -f 2,3|sort|uniq`:"
Global symbol "@a" requires explicit package name at interact_perturb.pl line 52.
Missing right curly or square bracket at interact_perturb.pl line 64, at end of line
Execution of interact_perturb.pl aborted due to compilation errors.

##</code><code>##

#!/usr/bin/perl
use strict;
use warnings;

# prints out inhibited object, directly activated ohjects, directly deactivated objects, indirectly activated objects, indirectly deacivated objects
print "Modified Object\tActivated Objects\tDeactivated Objects\n";
open(DAT,'<',"./useful_dat.tab")||die "Canot open file\n";
my @file=<DAT>;
close DAT;
shift @file;##remove header

my %true;
foreach my $line(@file){
	my @line=split(/\t/,$line);
	if($true{$line[0]}){
		next;#if element has already come up, skip it
	}
	else{
		$true{$line[0]}=1;#if object has already come up, store true
	}
	my @activated;
	my @inhibited;
	print "$line[0]\t";#inhibited object
	&inhibited_rec($line[0]);	


	foreach(@activated){
		print "$_,";
	}
	print "\t";
	foreach(@inhibited){
		print "$_,";
	}
	print "\n";
}


sub inhibited_rec{
	my @a=`awk '\$1 ~ /$_[0]/' useful_dat.tab |cut -f 2,3|sort|uniq`;
	foreach (@a){
		my @b=split(/\t/,$_);
		if($b[1] eq 'Activation'){
		}
		else{
			push (@activated,$b[0]);
			&activated_rec($b[0]);
		}
	}
}
sub activated_rec{
	my @a=`awk '\$1 ~ /$_[0]/' useful_dat.tab |cut -f 2,3|sort|uniq`:
	foreach (@a){
		my @b=split(/\t/,$_);
		if($b[1] eq 'Activation'){
			push (@activated,$b[0]);
			&activated_rec($b[0]);
		}
		else{
			push (@inhibited,$b[0]);
			&inhibited_rec($b[0]);
		}
	}