08-21-2008
Awk help needed to calculate total
Hi all,
I have a flat file like
10 steven
25 mike
47 Charles
127 Nancy
34 steven
23 mike
67 Charles
7761 Nancy
8 steven
54 mike
88 Charles
1267 Nancy
I need to calculate the total of steven and all the members , for this I am using like
grep "`sed -n 1p patterns.txt`" temp.log | awk '{x+=$1}END{print "Total "x}'
where patterns.txt contains
steven
mike
Charles
Nancy
I think i'm using wrong method, is there any other method is available which can do this job very easily.
Regards,
senthilkumar ak
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LEARN ABOUT DEBIAN
netsed
NETSED(1) NetSED NETSED(1)
NAME
netsed - a network stream editor.
SYNOPSIS
netsed {proto} {lport} {rhost} {rport} {rule} [rule ...]
DESCRIPTION
netsed is a small and handy utility to alter, in real time, the contents of packets forwarded in a network stream, or in a datagram
connection. When called with a set of replacement rules, these rules are tested for applicability to each packet entering in either
direction.
ARGUMENTS
proto
Determines the protocol for the desired connection: "tcp", "TCP", "udp", or "UDP".
lport
The local listening port for the connection. A service name, or a numerical port value, is acceptable.
rhost
The remote host with whom the connection is desired. Resolvable host names and IPv4/IPv6 addresses are equally usable.
As a special case, assigning "0" to rhost will insert the kernel's knowledge of the targeted host address, in a situation where a
netfilter rule is redirecting traffic. This happens when running a transparent proxy service.
rport
The remote port to connect to. A service name, or a numerical port value, is acceptable.
Also here a value "0" will be acceptable to arrange a transparent proxy service, as the kernel's tracking will provide the intended
remote port number.
rule
At least one replacement rule is mandatory. The general syntax for this is:
s/pat1/pat2[/num]
The effect is to replace the text that matches pat1 with the expansion of pat2. The optional parameter num is a numerical value
limiting the maximal number of times the rule can be applied. One could say that the rule expires after num occurrences.
The rules are applied in succession to all passing packets, flowing in either direction. As soon as a rule has been expired, it is
removed from the collection of active rules for the current connection. Observe that any counter is started as the connection is
initiated, running as long as the connection is alive.
This holds directly for TCP connections, whereas for UDP a connection is considered to consist of incoming data on fixed address and
fixed port together with any response from a remote server. When no datagrams have been transmitted for a period of 30 seconds, the UPD
connection is seen as closed.
A single rule is limited to act on individual packets; a pattern can not match across packet boundaries.
Using HTTP-like escape sequences for hexadecimal values, all eight-bit characters are viable in the patterns. Thus the standard
character pair CRNL would code as "%0a%0d". In a pattern, the percentage sign itself must be escaped by duplication. Thus a string "%%"
is interpreted in a pattern as a literal percentage sign.
EXAMPLES
A handful replacement rules are handy as examples.
s/andrew/mike
Replace every occurrence of the string "andrew" with "mike", in every passing packet.
s/andrew/mike/1
Replace only the first occurrence of the string "andrew" for "mike" in each packet. Any repetition is unaltered, unless a further rule
specifies some replacement.
s/andrew/mike%00%00
Replace in each packet every occurrence of the string "andrew" with "mikex00x00" . The padding with two null bytes ensures an
unaltered packet length, which might be essential at times.
s/%%/%2f/20
Replace the first twenty occurrences of the percentage character '%' with slashes '/'.
AUTHOR
This text was initially compiled by Mats Erik Andersson as a Docbook source from the usage printout. Permission is granted to copy,
distribute and/or modify this document under the terms of the GNU Public License, version 2, or of a later version.
COPYRIGHT
Copyright (C) 2010 Mats Erik Andersson
NetSED 1.00b June 19th, 2011 NETSED(1)