print $NR wouldn't have the expected result, it would print the field at the position referenced by the Number of Records (NR) variable, which means that if you've more records than fields, you'll get nothing. For example if there were 6 records, then NR would be set to 6, thus "print $NR" would evaluate to "print $6" hence the sixth field would be printed.
The shortest version of this is (from the command line):
What are the chances of possibly posting some of the more common how-to type stuff for the newbies so we can avoid the repititious stuff that appears every other day? Not so much like a Q&A forum, but more like a reference area for the mundane stuff.
Beyond searching the forum, I think people... (3 Replies)
Discussion started by: ober5861
3 Replies
2. Post Here to Contact Site Administrators and Moderators
I am dealing with a very large firewall logfile (more than 10G),
the logfile like this
*snip*
Nov 9 10:12:01 testfirewall root:
Nov 9 10:12:01 testfirewall root: 0:00:11 accept testfw01-hme0 >hme0 proto: icmp;
src: test001.example.net; dst: abc.dst.net; rule: 1; icmp-type: 8;... (8 Replies)
hi
iam new of the ksh script.iwant in formation of how to call in logfile in
ksh scripts. if the meaning in ksh.
please help me
thanks
naveen.g (1 Reply)
Discussion started by: naveeng.81
1 Replies
5. Post Here to Contact Site Administrators and Moderators
Hi
Just a thought if it already hasn't been suggested.
While looking at the forums I thought it might be a good idea under somewhere like 'special forums' add a section called 'projects'. I think this would be good for people to be able to post projects they have created.
For example I am... (3 Replies)
I have a list of Servers in no particular order as follows:
virtualMachines="IIBSBS IIBVICDMS01 IIBVICMA01"And I am generating some output from a pre-existing script that gives me the following (this is a sample output selection).
9/17/2010 8:00:05 PM: Normal backup using VDRBACKUPS... (2 Replies)
Hey,
I have a problem about how to get one section of a file?
I'm new to shell, but by reading some tutorial, I think I can use awk to do this.
my input file:
>ref|ZP_04937576.1|
ECRINAEDPKTFMPSPGKVKHFHAPGGNGVRVDSHLYSGYSVPPNYDSLVGKVITYGAD
DEALARMRNALDELIVDGIKTNTELHKDLVRDAAFCKGGVNIHYLE... (11 Replies)
I have searched in a variety of ways in a variety of places but have come up empty.
I would like to prepend a portion of a section header to each following line until the next section header. I have been using sed for most things up until now but I'd go for a solution in just about anything--... (7 Replies)
Hi, I have a log file from Munin like this:2012/12/04 13:45:31 : Munin-update finished (29.68 sec)
2012/12/04 13:50:01 Opened log file
2012/12/04 13:50:01 : Starting munin-update
2012/12/04 13:50:01 Error occured in under in the configuration.
2012/12/04 13:50:01 Could not parse datafile... (9 Replies)
Bonjour,
I've wrote a script to monitor a logfile in realtime. It is working almost perfeclty except for two things.
The script use the following technique :
tail -fn0 $logfile | \
while read line ; do
... some stuff
done
First one, I'd like a way to end the monitoring script if a... (3 Replies)
Discussion started by: Warluck
3 Replies
LEARN ABOUT REDHAT
net::dns::header
Net::DNS::Header(3) User Contributed Perl Documentation Net::DNS::Header(3)NAME
Net::DNS::Header - DNS packet header class
SYNOPSIS
"use Net::DNS::Header;"
DESCRIPTION
A "Net::DNS::Header" object represents the header portion of a DNS packet.
METHODS
new
$header = Net::DNS::Header->new;
$header = Net::DNS::Header->new($data);
Without an argument, "new" creates a header object appropriate for making a DNS query.
If "new" is passed a reference to a scalar containing DNS packet data, it creates a header object from that data.
Returns undef if unable to create a header object (e.g., if the data is incomplete).
print
$header->print;
Dumps the header data to the standard output.
string
print $header->string;
Returns a string representation of the header object.
id
print "query id = ", $header->id, "
";
$header->id(1234);
Gets or sets the query identification number.
qr
print "query response flag = ", $header->qr, "
";
$header->qr(0);
Gets or sets the query response flag.
opcode
print "query opcode = ", $header->opcode, "
";
$header->opcode("UPDATE");
Gets or sets the query opcode (the purpose of the query).
aa
print "answer is ", $header->aa ? "" : "non-", "authoritative
";
$header->aa(0);
Gets or sets the authoritative answer flag.
tc
print "packet is ", $header->tc ? "" : "not ", "truncated
";
$header->tc(0);
Gets or sets the truncated packet flag.
rd
print "recursion was ", $header->rd ? "" : "not ", "desired
";
$header->rd(0);
Gets or sets the recursion desired flag.
cd
print "checking was ", $header->cd ? "not" : "", "desired
";
$header->cd(0);
Gets or sets the checking disabled flag.
ra
print "recursion is ", $header->ra ? "" : "not ", "available
";
$header->ra(0);
Gets or sets the recursion available flag.
rcode
print "query response code = ", $header->rcode, "
";
$header->rcode("SERVFAIL");
Gets or sets the query response code (the status of the query).
qdcount, zocount
print "# of question records: ", $header->qdcount, "
";
$header->qdcount(2);
Gets or sets the number of records in the question section of the packet. In dynamic update packets, this field is known as "zocount" and
refers to the number of RRs in the zone section.
ancount, prcount
print "# of answer records: ", $header->ancount, "
";
$header->ancount(5);
Gets or sets the number of records in the answer section of the packet. In dynamic update packets, this field is known as "prcount" and
refers to the number of RRs in the prerequisite section.
nscount, upcount
print "# of authority records: ", $header->nscount, "
";
$header->nscount(2);
Gets or sets the number of records in the authority section of the packet. In dynamic update packets, this field is known as "upcount" and
refers to the number of RRs in the update section.
arcount, adcount
print "# of additional records: ", $header->arcount, "
";
$header->arcount(3);
Gets or sets the number of records in the additional section of the packet. In dynamic update packets, this field is known as "adcount".
data
$hdata = $header->data;
Returns the header data in binary format, appropriate for use in a DNS query packet.
COPYRIGHT
Copyright (c) 1997-2000 Michael Fuhr. All rights reserved. This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
SEE ALSO perl(1), Net::DNS, Net::DNS::Resolver, Net::DNS::Packet, Net::DNS::Update, Net::DNS::Question, Net::DNS::RR, RFC 1035 Section 4.1.1
perl v5.8.0 2002-10-12 Net::DNS::Header(3)