Hi guy,
I have a problem to pass a variable containing '*' value to FIND command.
below is the script. It doesn't work by submit below command:
rmf.sh name '*.txt'
or
rmf.sh name *.txt
I've tried either optn="-name '$2'" or optn="-name $2"., and there is no luck.
### (script... (5 Replies)
Hi All,
I am running my application on a dual cpu debian linux 3.0 (2.4.19 kernel).
For my application:
<sar -U ALL>
CPU %user %nice %system %idle
...
10:58:04 0 153.10 0.00 38.76 0.00
10:58:04 1 3.88 0.00 4.26 ... (0 Replies)
Hi All,
I need to store the real seconds of the following command in a variable. How could it be done?
time $(dd if=/dev/zero of=/dev/sda1 bs=512 count=2048;sync)
Thanks,
Amio (12 Replies)
I intend to find the path/full location of a file(filename given by user thru "read filenme") using "find" or any other command and then store it's output in a variable for some other processing.
But struggling to put all things together (i.e finding the fully qualified location of that file and... (4 Replies)
Hi All,
I have working (Perl) code to combine 2 input files into a single output file using the join function that works to a point, but has the following limitations:
1. I am restrained to 2 input files only.
2. Only the "matched" fields are written out to the "matched" output file and... (1 Reply)
Hi all,
I am new to Linux/shell scripting having moderate knowledge.
In my script, I need to get execution time of a command (say 'ls') in mili seconds level. For this i tried using "time" command to retrieve the total execution time in milli seconds. But, the problem is that, how to save... (9 Replies)
Hello,
There's a third-party application's command that shows the application's status like "tail -f verybusy.log". When use the command, the output comes every 1-sec. but when it goes in a script below the output comes every 8-sec...What is the problem and how can I fix it?
open(CMD,... (2 Replies)
Hi All,
I am new here but I have a scripting question that I can't seem to figure out with the "find" cmd.
What I am trying to do is to only have to run a single find cmd parsing the directories and output the different file types to induvidual files and I have been running into problems.... (3 Replies)
Discussion started by: swaters
3 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)