I have a flat file that is large enough to fit into memory and all i want to do is read the file line by line and if the line contains a specific value 'read_community XXXXX' print 'read_community newstring'. Here is where I am at: 
open NCNODE, "/path/nervecenter.node"
    or die "Error opening Nerve Center Node file ($!)";
foreach my $variable (<NCNODE>) {
    chomp;
    print STDOUT $variable;
}
close NCNODE;

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I know that i need to place an if statement where i have the print line. But, i guess i am having an issue with the syntax. I was thinking that it would be something like: 
if ($variable eq 'read_community'){
    print;
}

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But, it does not seem to be correct. Below is a sample of the file. 
begin node
name Router
on_off on
group Frame_Relay
suppress no
auto_delete yes
read_community readstring
write_community readstring
address 10.0.0.0
port 161
snmp_version 1
engineid 0
auth_protocol 0
is_key_ok 1
error_status 0
security_level 0
end node

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In reply to Simple Problem getting me Stumped by CongoGrey

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