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~# vim sql_log.sh

#!/bin/bash

#echo $1
#echo $*
#echo $@
#echo $#

# Le nombre d'arguments : $#
#echo $#

var_on_off="";

if [ $# = 1 ]
then
        if [ $1 = "ON" ]
        then
                var_on_off=$1;
        elif [ $1 = "OFF" ]
        then
                var_on_off=$1;
        else
                echo "Un seul ARG : ON/OFF";
                exit 0;
        fi

else
        echo "Un seul ARG : ON/OFF";
        exit 0;
fi


var_general_log=`mysql --defaults-file=/etc/mysql/debian.cnf --skip-column-names -A information_schema -e "SELECT VARIABLE_VALUE FROM GLOBAL_VARIABLES WHERE VARIABLE_NAME = 'general_log'"`
echo $var_general_log
# general_log ON | OFF

var_general_log_file=`mysql --defaults-file=/etc/mysql/debian.cnf --skip-column-names -A information_schema -e "SELECT VARIABLE_VALUE FROM GLOBAL_VARIABLES WHERE VARIABLE_NAME = 'general_log_file'"`
echo $var_general_log_file
# vmp090.log

var_datadir=`mysql --defaults-file=/etc/mysql/debian.cnf --skip-column-names -A information_schema -e "SELECT VARIABLE_VALUE FROM GLOBAL_VARIABLES WHERE VARIABLE_NAME = 'datadir'"`
echo $var_datadir

echo "general_log:" $var_general_log $var_datadir$var_general_log_file


if [ $1 = "ON" ]
then
        :>$var_general_log_file
fi

mysql --defaults-file=/etc/mysql/debian.cnf --skip-column-names -e "SET GLOBAL general_log = $var_on_off"

echo "tail -f $var_datadir$var_general_log_file"