PT-MEXT(1p)						User Contributed Perl Documentation					       PT-MEXT(1p)

NAME

       pt-mext - Look at many samples of MySQL "SHOW GLOBAL STATUS" side-by-side.

SYNOPSIS

       Usage: pt-mext [OPTIONS] -- COMMAND

       pt-mext columnizes repeated output from a program like mysqladmin extended.

       Get output from "mysqladmin":

	  pt-mext -r -- mysqladmin ext -i10 -c3"

       Get output from a file:

	  pt-mext -r -- cat mysqladmin-output.txt

RISKS

       The following section is included to inform users about the potential risks, whether known or unknown, of using this tool.  The two main
       categories of risks are those created by the nature of the tool (e.g. read-only tools vs. read-write tools) and those created by bugs.

       pt-mext is a read-only tool.  It should be very low-risk.

       At the time of this release, we know of no bugs that could cause serious harm to users.

       The authoritative source for updated information is always the online issue tracking system.  Issues that affect this tool will be marked
       as such.  You can see a list of such issues at the following URL: http://www.percona.com/bugs/pt-mext <http://www.percona.com/bugs/pt-
       mext>.

       See also "BUGS" for more information on filing bugs and getting help.

DESCRIPTION

       pt-mext executes the "COMMAND" you specify, and reads through the result one line at a time.  It places each line into a temporary file.
       When it finds a blank line, it assumes that a new sample of SHOW GLOBAL STATUS is starting, and it creates a new temporary file.  At the
       end of this process, it has a number of temporary files.  It joins the temporary files together side-by-side and prints the result.  If the
       "-r" option is given, it first subtracts each sample from the one after it before printing results.

OPTIONS

       -r  Relative: subtract each column from the previous column.

ENVIRONMENT

       This tool does not use any environment variables.

SYSTEM REQUIREMENTS

       This tool requires the Bourne shell (/bin/sh) and the seq program.

BUGS

       For a list of known bugs, see http://www.percona.com/bugs/pt-mext <http://www.percona.com/bugs/pt-mext>.

       Please report bugs at https://bugs.launchpad.net/percona-toolkit <https://bugs.launchpad.net/percona-toolkit>.  Include the following
       information in your bug report:

       o   Complete command-line used to run the tool

       o   Tool "--version"

       o   MySQL version of all servers involved

       o   Output from the tool including STDERR

       o   Input files (log/dump/config files, etc.)

       If possible, include debugging output by running the tool with "PTDEBUG"; see "ENVIRONMENT".

DOWNLOADING

       Visit http://www.percona.com/software/percona-toolkit/ <http://www.percona.com/software/percona-toolkit/> to download the latest release of
       Percona Toolkit.  Or, get the latest release from the command line:

	  wget percona.com/get/percona-toolkit.tar.gz

	  wget percona.com/get/percona-toolkit.rpm

	  wget percona.com/get/percona-toolkit.deb

       You can also get individual tools from the latest release:

	  wget percona.com/get/TOOL

       Replace "TOOL" with the name of any tool.

AUTHORS

       Baron Schwartz

ABOUT PERCONA TOOLKIT

       This tool is part of Percona Toolkit, a collection of advanced command-line tools developed by Percona for MySQL support and consulting.
       Percona Toolkit was forked from two projects in June, 2011: Maatkit and Aspersa.  Those projects were created by Baron Schwartz and
       developed primarily by him and Daniel Nichter, both of whom are employed by Percona.  Visit <http://www.percona.com/software/> for more
       software developed by Percona.

COPYRIGHT, LICENSE, AND WARRANTY
       This program is copyright 2010 Baron Schwartz, 2011-2012 Percona Inc.  Feedback and improvements are welcome.

       THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
       MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation, version 2; OR the Perl Artistic License.  On UNIX and similar systems, you can issue `man perlgpl' or `man
       perlartistic' to read these licenses.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.

VERSION

       pt-mext 2.1.2

perl v5.14.2							    2012-06-15							       PT-MEXT(1p)