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Full Discussion: Cron job for MySQL process
Top Forums Shell Programming and Scripting Cron job for MySQL process Post 302972557 by Don Cragun on Friday 6th of May 2016 08:38:32 PM
Old 05-06-2016
How long does it take to run your mysql command? How much variation is there in the time it takes to run your mysql command?

If you want to run your command 12 times/minute, don't you want the seconds in output filename? As in:
Code:
mysql -ufoo --password='' -te "show full process list" > /home/foo/log/show_processlist.log.`date +%Y%m%d-%H%M%S` 2>&1

If not, the output from the first 11 times you run it will be overwritten by the last time it runs in that minute?

Or, didi you intend to store the output of running your command 12 times in each file with the output from later runs appended to the file instead of replacing the previous contents? As in:
Code:
mysql -ufoo --password='' -te "show full process list" >> /home/foo/log/show_processlist.log.`date +%Y%m%d-%H%M` 2>&1

 

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MYSQLD(8)						       MySQL Database System							 MYSQLD(8)

NAME
mysqld - the MySQL server SYNOPSIS
mysqld [options] DESCRIPTION
mysqld, also known as MySQL Server, is the main program that does most of the work in a MySQL installation. MySQL Server manages access to the MySQL data directory that contains databases and tables. The data directory is also the default location for other information such as log files and status files. When MySQL server starts, it listens for network connections from client programs and manages access to databases on behalf of those clients. The mysqld program has many options that can be specified at startup. For a complete list of options, run this command: shell> mysqld --verbose --help MySQL Server also has a set of system variables that affect its operation as it runs. System variables can be set at server startup, and many of them can be changed at runtime to effect dynamic server reconfiguration. MySQL Server also has a set of status variables that provide information about its operation. You can monitor these status variables to access runtime performance characteristics. For a full description of MySQL Server command options, system variables, and status variables, see Section 5.1, "The MySQL Server". For information about installing MySQL and setting up the initial configuration, see Chapter 2, Installing and Upgrading MySQL. COPYRIGHT
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Sun Microsystems, Inc. (http://www.mysql.com/). MySQL 5.1 04/06/2010 MYSQLD(8)
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