10-13-2005
Thanks for the link.
But to be honest I'm not to familiar with awk myself.
Is there a way to pick a max value from a field using awk?
Could grep be used?
bjorb
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
All,
I have a task to search through several hundred files and extract duplicate detail records and keep them grouped with their header record. If no duplicate detail record exists, don't pull the header. For example, an input file could look like this:
input.txt
HA
D1
D2
D2
D3
D4
D4... (17 Replies)
Discussion started by: run_eim
17 Replies
2. UNIX for Dummies Questions & Answers
I have a comma-separated record and I'd like to use sed to pull the Nth record from it.
It seems like it'd need to be something like this: sed -n 's/'"\,$1\,"'/&/p'
Am I close? (3 Replies)
Discussion started by: doubleminus
3 Replies
3. Shell Programming and Scripting
Hi all
I want to inquire that is there any unix command that can help me while extracting first and last line in a file ( TEST.dat)
for example in the below record i want to extract the line that are in BOLD text or in other words i want to extract line no 1,3,4 and 7
aa 1 2 3
aa 2 3 4... (5 Replies)
Discussion started by: Bungash125
5 Replies
4. Shell Programming and Scripting
Hi,
I have a data file with millions of record (N). Each record was saved in 4 lines. So there are total of NX4 lines in the data file.
For Example:
Host1
a
b
c
d
Host2
e
f
g
h
Host3
i
j
k (2 Replies)
Discussion started by: phoeberunner
2 Replies
5. Shell Programming and Scripting
Suppose there is a table like the following...I just wanted to know if there is any command using which we can get the record/name of the person who joined before 2005..
Sl Name des y.o.joining
1 Ram Engineer 2001
2 Hari Doctor 2004
3 David Plumber 2005
4 Rahim painter 2007
5 gurmeet... (1 Reply)
Discussion started by: satyajit007
1 Replies
6. Shell Programming and Scripting
Hi,
I have a large file with huge number of records which are of following pattern:
TYPE1
{
originNodeType : "IVR"
originHostName : "AAIVR"
originTransactionID : "01310559"
originTimeStamp : "20110620192440+0530"
hostName : "hhhh"
voucher : '0'D
rProfileID : "ZZZZ"
Before
{
Flags :... (1 Reply)
Discussion started by: madhukar1anand
1 Replies
7. Shell Programming and Scripting
Hi,
I have a input file with the following entries:
1one
2two
3three
1four
2five
3six
1seven
1eight
1nine
2ten
The output should be
1one
2two
3three
1four
2five
3six (2 Replies)
Discussion started by: supchand
2 Replies
8. Shell Programming and Scripting
Hi,
I have a input file with the following entries:
1one
2two
3three
1four
2five
3six
1seven
1eight
1nine
2ten
2eleven
2twelve
1thirteen
2fourteen
The output should be: (5 Replies)
Discussion started by: supchand
5 Replies
9. Shell Programming and Scripting
input file
output file (1 Reply)
Discussion started by: lathigara
1 Replies
10. Shell Programming and Scripting
I have test.xml
<emp><id>101</id><name>AAA</name><date>06/06/14 1811</date></emp>
<Join><id>101</id><city>london</city><date>06/06/14 2011</date></join>
<Join><id>101</id><city>new york</city><date>06/06/14 1811</date></join>
<Join><id>101</id><city>sydney</city><date>06/06/14... (2 Replies)
Discussion started by: vsraju
2 Replies
LEARN ABOUT CENTOS
trace-cmd-extract
TRACE-CMD-EXTRACT(1) TRACE-CMD-EXTRACT(1)
NAME
trace-cmd-extract - extract out the data from the Ftrace Linux tracer.
SYNOPSIS
trace-cmd extract [OPTIONS]
DESCRIPTION
The trace-cmd(1) extract is usually used after trace-cmd-start(1) and trace-cmd-stop(1). It can be used after the Ftrace tracer has been
started manually through the Ftrace pseudo file system.
The extract command creates a trace.dat file that can be used by trace-cmd-report(1) to read from. It reads the kernel internal ring buffer
to produce the trace.dat file.
OPTIONS
-p plugin
Although extract does not start any traces, some of the plugins require just reading the output in ASCII format. These are the latency
tracers, since the latency tracers have a separate internal buffer. The plugin option is therefore only necessary for the wakeup,
wakeup-rt, irqsoff, preemptoff and preemptirqsoff plugins.
With out this option, the extract command will extract from the internal
Ftrace buffers.
-O option
If a latency tracer is being extracted, and the -p option is used, then there are some Ftrace options that can change the format. This
will update those options before extracting. To see the list of options see trace-cmd-list. To enable an option, write its name, to
disable the option append the characters no to it. For example: noprint-parent will disable the print-parent option that prints the
parent function in printing a function event.
-o outputfile
By default, the extract command will create a trace.dat file. This option will change where the file is written to.
SEE ALSO
trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-reset(1), trace-cmd-split(1),
trace-cmd-list(1), trace-cmd-listen(1)
AUTHOR
Written by Steven Rostedt, <rostedt@goodmis.org[1]>
RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
COPYING
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).
NOTES
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
06/11/2014 TRACE-CMD-EXTRACT(1)