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188 lines
4.1 KiB
ReStructuredText
188 lines
4.1 KiB
ReStructuredText
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########
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pt-align
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########
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.. highlight:: perl
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****
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NAME
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****
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pt-align - Read lines and split them into words.
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********
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SYNOPSIS
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********
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Usage: pt-align [FILES]
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pt-align reads lines in files and splits them into words. This is useful for
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things like aligning the output of vmstat or iostat so it is easier to read.
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***********
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DESCRIPTION
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***********
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pt-align counts how many words each line has, and if there is one number that
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predominates, it assumes this is the number of words in each line. Then it
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discards all lines that don't have that many words, and looks at the 2nd line
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that does. It assumes this is the first non-header line. Based on whether
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each word looks numeric or not, it decides on column alignment. Finally, it
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goes through and decides how wide each column should be, and then prints them
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out.
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The tool's behavior has some important consequences. Reading the entire input
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before formatting means that you can't use it for aligning data as it is
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generated incrementally, and you probably don't want to use this tool on very
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large files. Discarding lines with the wrong number of words means that some
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lines won't be printed.
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*******
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OPTIONS
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This tool does not have any command-line options.
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***********
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ENVIRONMENT
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This tool does not use any environment variables.
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*******************
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SYSTEM REQUIREMENTS
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*******************
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This tool requires Perl v5.8 or newer built with core modules.
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****
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BUGS
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****
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For a list of known bugs, see `http://www.percona.com/bugs/pt-align <http://www.percona.com/bugs/pt-align>`_.
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Please report bugs at `https://bugs.launchpad.net/percona-toolkit <https://bugs.launchpad.net/percona-toolkit>`_.
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Include the following information in your bug report:
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\* Complete command-line used to run the tool
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\* Tool "--version"
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\* MySQL version of all servers involved
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\* Output from the tool including STDERR
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\* Input files (log/dump/config files, etc.)
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If possible, include debugging output by running the tool with \ ``PTDEBUG``\ ;
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see "ENVIRONMENT".
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***********
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DOWNLOADING
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***********
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Visit `http://www.percona.com/software/percona-toolkit/ <http://www.percona.com/software/percona-toolkit/>`_ to download the
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latest release of Percona Toolkit. Or, get the latest release from the
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command line:
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.. code-block:: perl
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wget percona.com/get/percona-toolkit.tar.gz
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wget percona.com/get/percona-toolkit.rpm
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wget percona.com/get/percona-toolkit.deb
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You can also get individual tools from the latest release:
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.. code-block:: perl
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wget percona.com/get/TOOL
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Replace \ ``TOOL``\ with the name of any tool.
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*******
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AUTHORS
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*******
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Baron Schwartz
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*********************
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ABOUT PERCONA TOOLKIT
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*********************
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This tool is part of Percona Toolkit, a collection of advanced command-line
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tools developed by Percona for MySQL support and consulting. Percona Toolkit
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was forked from two projects in June, 2011: Maatkit and Aspersa. Those
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projects were created by Baron Schwartz and developed primarily by him and
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Daniel Nichter, both of whom are employed by Percona. Visit
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`http://www.percona.com/software/ <http://www.percona.com/software/>`_ for more software developed by Percona.
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********************************
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COPYRIGHT, LICENSE, AND WARRANTY
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********************************
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This program is copyright 2010 Baron Schwartz, 2011 Percona Inc.
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Feedback and improvements are welcome.
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THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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systems, you can issue \`man perlgpl' or \`man perlartistic' to read these
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licenses.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA.
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*******
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VERSION
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*******
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Percona Toolkit v1.0.0 released 2011-08-01
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