02-07-2008
cat <your file> | cut -d ' ' -f 1
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
This is my first post, please be nice. I have tried to google and read different tutorials.
The task at hand is:
Input file input.txt (example)
abc123defhij-E-1234jslo
456ujs-W-abXjklp
From this file the task is to grep the -E- and -W- strings that are unique and write a new file... (5 Replies)
Discussion started by: TestTomas
5 Replies
2. UNIX for Dummies Questions & Answers
Hello People,
I have the following contents in an XML file
...........
...........
..........
...........
<Details = "Sample Details">
<Name>Bob</Name>
<Age>34</Age>
<Address>CA</Address>
<ContactNumber>1234</ContactNumber>
</Details>
...........
.............
.............. (4 Replies)
Discussion started by: sushant172
4 Replies
3. UNIX for Dummies Questions & Answers
I am working on a scraping project and I am stuck at this tiny grep pattern match.
Sample text :
FPA List. FPA List. FPA List. FPA List. FPA List. FPA List. FPA List. FPA List.
ABC Personal Planning
Catherine K. Wat
Cath Wat
Catherine K. Wat
Catherine K. Wat
IFRAME:... (8 Replies)
Discussion started by: kkiran
8 Replies
4. Shell Programming and Scripting
Hi All,
what i want to do in perl is i should give the date at run time .Suppose date given is 23/12/2011(mm/dd/yyyy) the perl script shold find week start date, week end date, previous week start date,end date,next week start date, end date. In this case
week start date will be-:12/19/2011... (2 Replies)
Discussion started by: parthmittal2007
2 Replies
5. Shell Programming and Scripting
I have hundreds of files to process. In each file
I need to look for a pattern then
extract value(s) from next line and then
search for value(s) selected from point (2) in the same file at a specific position.
HEADER ELECTRON TRANSPORT 18-MAR-98 1A7V
TITLE CYTOCHROME... (7 Replies)
Discussion started by: AshwaniSharma09
7 Replies
6. UNIX for Dummies Questions & Answers
Hi, I have a file1 of many long sequences, each preceded by a unique header line. file2 is 3-columns list: headers name, start position, end position. I'd like to extract the sequence region of file1 specified in file2.
Based on a post elsewhere, I found the code:
awk... (2 Replies)
Discussion started by: pathunkathunk
2 Replies
7. Shell Programming and Scripting
Hello fellow awkers and seders:
need to figure out a way to ensure a software deployment has completed by checking its trace file in which I can store the deployment results as follows:
echo $testvar
===== Summary - Deploy Result - Start ===== ===== Summary - Deploy Result - End =====... (1 Reply)
Discussion started by: ux4me
1 Replies
8. Shell Programming and Scripting
Cat file1
--------
----------
SCHEMA.TABLE1
insert-------
update-----
-------------
----------
SCHEMA.TABLE2
insert-------
update-----
-----------
------------
SCHEMA.TABLE3
insert-------
update-----
------------
grep -n SCHEMA > header_file2.txt (2 Replies)
Discussion started by: Veera_V
2 Replies
9. Shell Programming and Scripting
Hi,
I have a log file (log.txt) that which contains lines of date/time.
I need to create a script to extract a CSV file (out.csv) that gets all the sequential times (with only 1 minute difference) together by stating the start time and end time of this period.
Sample log file (log.txt)
... (7 Replies)
Discussion started by: Mr.Zizo
7 Replies
10. Shell Programming and Scripting
My file (the output of an experiment) starts off looking like this,
_____________________________________________________________
Subjects incorporated to date: 001
Data file started on machine PKSHS260-05CP
**********************************************************************
Subject 1,... (9 Replies)
Discussion started by: samonl
9 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)