02-12-2010
There are 3 ways to call shell cmd in perl
1 . use back ticks ` `
2 use system("cmd")
3 use exec("cmd")
depending on what type of result you are seeking from execution
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
please give the difference between AIX shell scripting and Unix shell scripting. (2 Replies)
Discussion started by: haroonec
2 Replies
2. Shell Programming and Scripting
I guess the subject asks it all, but I am wondering (before I go and code a COBOL module) if conversion of regular ASCII data to COMP-3 is possible on a UNIX environment (AIX 5.1)? Any help would be appreciated! Thanks, Dave (13 Replies)
Discussion started by: dfran1972
13 Replies
3. Programming
Hi All,
How to call the C programme in UNIX shell scripting?
please send me some sample script for the above scenario.
Regards,
MPS:b: (1 Reply)
Discussion started by: psiva_arul
1 Replies
4. Shell Programming and Scripting
Hello,
I have done some BASIC shell scripting/PERL scripting before so I am familiar with the languages. I am not really sure which one would lend itself better to the application I have to write.
I am required to scan the message logs for possible break in attempts. If I use shell scripting... (3 Replies)
Discussion started by: mojoman
3 Replies
5. Shell Programming and Scripting
Hi,
I have general question: i have good working Perl script with .pl extension, and now I have to migrate all to another Linux box, and I was told that I can use only shell scripting, so I'm not sure how different those two things are, will it work without any changes . Is there anything smart I... (6 Replies)
Discussion started by: trento17
6 Replies
6. What is on Your Mind?
Hi all,
I would like to start developping some good scripting skills. Do you think it would be best to start with shell scripting or Perl? I already got a fundation, really basics, in perl. but I am wondering what would be best to be good at first.
Can you please help me determine which one to... (14 Replies)
Discussion started by: Pouchie1
14 Replies
7. Shell Programming and Scripting
Hai ! I am doing a research on Bioinformatics and a part of the code in perl have to be converted to shell scripting. I am new to shell programming. Pls. kindly help me to convert this code to shell script though it is somewhat lengthy.
PLS KINDLY HELP ME. THANKS IN ADVANCE.
my @FreeEnergy =... (1 Reply)
Discussion started by: kswapnadevi
1 Replies
8. What is on Your Mind?
Gents,
I have been working in a Solaris/Unix environment for about 9 months. I took some linux classses online before getting the job. But, I am not very good at scripting. I want to learn how to script. Do you think that I should start with Shell scripting or Perl? I wanted to continue with... (2 Replies)
Discussion started by: Pouchie1
2 Replies
9. Web Development
i am going to study any one of the scripting languages mentioned above(shell 0r perl scripting) . Which is having more scope for a fresher? (1 Reply)
Discussion started by: Anna Hussie
1 Replies
10. Shell Programming and Scripting
Hi I have a function :
Make_Report()
{
trx_report=`sqlplus -s $conn_str << @@
set echo off;
set pages 0;
set feedback off;
set verify off;
select srv_trx_s_no,... (1 Reply)
Discussion started by: neeraj617
1 Replies
LEARN ABOUT CENTOS
trace-cmd-reset
TRACE-CMD-RESET(1) TRACE-CMD-RESET(1)
NAME
trace-cmd-reset - turn off all Ftrace tracing to bring back full performance
SYNOPSIS
trace-cmd reset [OPTIONS]
DESCRIPTION
The trace-cmd(1) reset command turns off all tracing of Ftrace. This will bring back the performance of the system before tracing was
enabled. This is necessary since trace-cmd-record(1), trace-cmd-stop(1) and trace-cmd-extract(1) do not disable the tracer, event after the
data has been pulled from the buffers. The rational is that the user may want to manually enable the tracer with the Ftrace pseudo file
system, or examine other parts of Ftrace to see what trace-cmd did. After the reset command happens, the data in the ring buffer, and the
options that were used are all lost.
OPTIONS
-b buffer_size
When the kernel boots, the Ftrace ring buffer is of a minimal size (3 pages per CPU). The first time the tracer is used, the ring
buffer size expands to what it was set for (default 1.4 Megs per CPU).
If no more tracing is to be done, this option allows you to shrink the
ring buffer down to free up available memory.
trace-cmd reset -b 1
SEE ALSO
trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(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-RESET(1)