diff --git a/optimize_mysql_tables-ND.sh b/optimize_mysql_tables-ND.sh
index fa42db6..3fd4186 100755
--- a/optimize_mysql_tables-ND.sh
+++ b/optimize_mysql_tables-ND.sh
@@ -5,16 +5,21 @@ working_dir="$(dirname $(realpath $0))"
 
 conf_file="${working_dir}/conf/mysql_credetials.conf"
 
-tmp_log_file="$(mktemp)"
+# - Lock directory exists, until the script ends. So
+# - we can check, if a previos instanze is already  running.
+# -
+LOCK_DIR="/tmp/${script_name%%.*}.LOCK"
+log_file="${LOCK_DIR}/${script_name%%.*}.log"
 
 
 # -------------
-# - Variable settings
+# - Variable (default) settings
 # -------------
 DEFAULT_MYSQL_CREDENTIAL_ARGS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
-DEFAULT_LOG_FILE="/var/log/${script_name%%.*}.log"
 VERBOSE=false
 
+DEFAULT_to_addresses="argus@oopen.de"
+
 
 # -------------
 # --- Some functions
@@ -64,7 +69,14 @@ usage() {
 clean_up() {
 
    # Perform program exit housekeeping
-   rm -f $tmp_log_file
+   if [[ ${1} -gt 0 ]] ; then
+      [[ -f "${log_file}" ]] && cp ${log_file} "/var/log/"
+   else
+      rm -f "/var/log/$(basename "${log_file}")"
+   fi
+   rm -rf "$LOCK_DIR"
+
+   blank_line
    exit $1
 }
 
@@ -159,6 +171,12 @@ trim() {
     echo -n "$var"
 }
 
+blank_line() {
+   if $terminal ; then
+      echo ""
+   fi
+}
+
 detect_mysql_version () {
 
    _MYSQLD_VERSION="$(mysqld -V 2>/dev/null)"
@@ -182,28 +200,16 @@ detect_mysql_version () {
 }
 
 
-
-trap clean_up SIGHUP SIGINT SIGTERM
-
-
+# -------------
 # - Is this script running on terminal ?
-# -
+# -------------
+
 if [[ -t 1 ]] ; then
    terminal=true
 else
    terminal=false
 fi
 
-mysql=`which mysql`
-
-if [ -z "$mysql" ]; then
-   if [ -x "/usr/local/mysql/bin/mysql" ]; then
-      mysql=/usr/local/mysql/bin/mysql
-   else
-      fatal "No binary 'mysql' found!"
-   fi
-fi
-
 
 # -------------
 # - Read Commandline Parameters
@@ -230,27 +236,58 @@ if [[ "$(trim $*)" =~ " -h" ]] || [[ "$(trim $*)" =~ " --help" ]] ; then
 fi
 
 
+# -------------
+# - Job is already running?
+# -------------
+
+## - If job already runs, stop execution..
+## -
+if mkdir "$LOCK_DIR" 2> /dev/null ; then
+
+   ## - Remove lockdir when the script finishes, or when it receives a signal
+   trap "clean_up 1" SIGHUP SIGINT SIGTERM
+
+else
+
+   datum=`date +"%d.%m.%Y"`
+
+   msg="[ Error ]: A previos instance of \"`basename $0`\" seems already be running.\n\tExiting now.."
+
+   echo ""
+   echo "[ Error ]: A previos instance of that script \"`basename $0`\" seems already be running."
+   echo ""
+   echo -e "\tExiting now.."
+   echo ""
+
+   for _to_address in $to_addresses ; do
+      echo -e "To:${_to_address}\n${content_type}\nSubject:Error cronjob `basename $0` -- $datum\n${msg}\n" \
+         | sendmail -F "Error `hostname -f`" -f $from_address $_to_address
+   done
+
+   exit 1
+
+fi
+
+
 # -------------
 # - Load Settings from configuration file
 # -------------
 
 if [[ -n "$1 " ]] ; then
-   DATABASES="$1"
+   GIVEN_DATABASE="$1"
 else
-   DATABASES=""
+   GIVEN_DATABASE=""
 fi
 
-if $terminal ; then
-   echo ""
-fi
+blank_line
 echononl "   Loading configuration settings from $(basename ${conf_file}).."
 if [[ -f "$conf_file" ]]; then
-   source "$conf_file" > $tmp_log_file 2>&1
+   source "$conf_file" > $log_file 2>&1
    if [[ $? -eq 0 ]]; then
       echo_ok
    else
       echo_failed
-      fatal "$(cat $tmp_log_file)"
+      fatal "$(cat $log_file)"
    fi
 else
    echo_skipped
@@ -260,7 +297,23 @@ else
 fi
 
 
-#[[ -z "$mysql_credential_args" ]] && mysql_credential_args="$DEFAULT_MYSQL_CREDENTIAL_ARGS"
+[[ -z "${to_addresses}" ]] && to_addresses="${DEFAULT_to_addresses}"
+
+
+# -------------
+# - Some default values
+# -------------
+
+mysql=`which mysql`
+
+if [ -z "$mysql" ]; then
+   if [ -x "/usr/local/mysql/bin/mysql" ]; then
+      mysql=/usr/local/mysql/bin/mysql
+   else
+      fatal "No binary 'mysql' found!"
+   fi
+fi
+
 
 if [[ -z "$mysql_credential_args" ]]; then
 	
@@ -298,31 +351,64 @@ if [[ -z "$mysql_credential_args" ]]; then
    fi
 fi
 
-[[ -z "$log_file" ]] && log_file="$DEFAULT_LOG_FILE"
 
 if [[ ${#mysql_credential_args_arr[@]} -eq 0 ]]; then
    mysql_credential_args_arr[0]="default:$mysql_credential_args"
 fi
 
+
+# ==========
+# - Begin Main Script
+# ==========
+
+# ----------
+# - Headline
+# ----------
+
+if $terminal ; then
+   echo ""
+   echo -e "\033[1m----------\033[m"
+   echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
+   echo -e "\033[1m----------\033[m"
+fi
+
 declare -i length_table_name
 declare -i number_blank_signd
 declare -i index_i
-for _val in ${mysql_credential_args_arr[@]} ; do
+declare -i index_arr=0
+while [[ $index_arr -lt ${#mysql_credential_args_arr[@]} ]] ; do
 
    _all_success=true
 
-   IFS=':' read -a _val_arr <<< "${_val}"
+   IFS=':' read -a _val_arr <<< "${mysql_credential_args_arr[$index_arr]}"
    mysql_version="${_val_arr[0]}"
    mysql_credential_args="${_val_arr[1]}"
 
-   if $terminal ; then
-      echo ""
-      echo -e "[ \033[37m\033[1mMySQL $mysql_version\033[m ]: optimize (and repair) tables of databases at host '$(hostname -f)'."
-   fi
-   echo -e "[ MySQL $mysql_version ]: optimize (and repair) tables of databases at host '$(hostname -f)'." > $log_file
 
-   if [[ -z "$DATABASES" ]] ; then
-      DATABASES=`$mysql $mysql_credential_args -N -s -e "show databases"`
+   DATABASES="$($mysql $mysql_credential_args -N -s -e "show databases")"
+
+   found=false
+   if [[ -n "$GIVEN_DATABASE" ]] ; then
+      for db in $DATABASES ; do
+         if [[ "$db" = "$GIVEN_DATABASE" ]]; then
+            DATABASES="$GIVEN_DATABASE"
+            if $terminal ; then
+               echo ""
+               echo -e "[ \033[37m\033[1mMySQL $mysql_version\033[m ]: optimize (and repair) tables of database '$GIVEN_DATABASE'."
+            fi
+            echo -e "[ MySQL $mysql_version ]: optimize (and repair) tables of database '$GIVEN_DATABASE'." > $log_file
+            found=true
+         fi
+      done
+      if ! $found ; then
+         continue
+      fi
+   else
+      if $terminal ; then
+         echo ""
+         echo -e "[ \033[37m\033[1mMySQL $mysql_version\033[m ]: optimize (and repair) tables of databases at host '$(hostname -f)'."
+      fi
+      echo -e "[ MySQL $mysql_version ]: optimize (and repair) tables of databases at host '$(hostname -f)'." > $log_file
    fi
 
    length_table_name=0
@@ -350,25 +436,25 @@ for _val in ${mysql_credential_args_arr[@]} ; do
 
 				if [[ -d "/var/www/html/projekte/nd/htdocs503" ]] ; then
 
-					mv /var/www/html/projekte/nd/htdocs /var/www/html/projekte/nd/htdocs.$_service_extension > $tmp_log_file 2>&1
+					mv /var/www/html/projekte/nd/htdocs /var/www/html/projekte/nd/htdocs.$_service_extension > $log_file 2>&1
 					if [[ $? -ne 0 ]]; then
-						error "Error while moving '/var/www/html/projekte/nd/htdocs'.\n$(cat $tmp_log_file)"
+						error "Error while moving '/var/www/html/projekte/nd/htdocs'.\n$(cat $log_file)"
                else
                   _htdocs_nd_moved=true
 					fi
 
                if $_htdocs_nd_moved ; then
-                  ln -s htdocs503 /var/www/html/projekte/nd/htdocs > $tmp_log_file 2>&1
+                  ln -s htdocs503 /var/www/html/projekte/nd/htdocs > $log_file 2>&1
                   if [[ $? -ne 0 ]]; then
-                     error "Error while linking '/var/www/html/projekte/nd/htdocs' --> 'htdocs503'.\n$(cat $tmp_log_file)"
+                     error "Error while linking '/var/www/html/projekte/nd/htdocs' --> 'htdocs503'.\n$(cat $log_file)"
                   else
                      _htdocs_nd_symlinked=true
                   fi
                fi
 
-					/usr/local/apache2/bin/apachectl graceful > $tmp_log_file 2>&1
+					/usr/local/apache2/bin/apachectl graceful > $log_file 2>&1
 					if [[ $? -ne 0 ]]; then
-						error "Restarting Apache Webservice failed.\n$(cat $tmp_log_file)"
+						error "Restarting Apache Webservice failed.\n$(cat $log_file)"
 					fi
 
 				else
@@ -384,23 +470,23 @@ for _val in ${mysql_credential_args_arr[@]} ; do
 
 				if [[ -d "/var/www/html/projekte/nd-archiv/htdocs503" ]] ; then
 
-					mv /var/www/html/projekte/nd-archiv/htdocs /var/www/html/projekte/nd-archiv/htdocs.$_service_extension > $tmp_log_file 2>&1
+					mv /var/www/html/projekte/nd-archiv/htdocs /var/www/html/projekte/nd-archiv/htdocs.$_service_extension > $log_file 2>&1
 					if [[ $? -ne 0 ]]; then
-						error "Error while moving '/var/www/html/projekte/nd-archiv/htdocs'.\n$(cat $tmp_log_file)"
+						error "Error while moving '/var/www/html/projekte/nd-archiv/htdocs'.\n$(cat $log_file)"
                else
                   _htdocs_nd_archiv_moved=true
 					fi
 
-					ln -s htdocs503 /var/www/html/projekte/nd-archiv/htdocs > $tmp_log_file 2>&1
+					ln -s htdocs503 /var/www/html/projekte/nd-archiv/htdocs > $log_file 2>&1
 					if [[ $? -ne 0 ]]; then
-						error "Error while linking '/var/www/html/projekte/nd-archiv/htdocs' --> 'htdocs503'.\n$(cat $tmp_log_file)"
+						error "Error while linking '/var/www/html/projekte/nd-archiv/htdocs' --> 'htdocs503'.\n$(cat $log_file)"
 					else
                   _htdocs_nd_archiv_symlinked=true
 					fi
 
-					/usr/local/apache2/bin/apachectl graceful > $tmp_log_file 2>&1
+					/usr/local/apache2/bin/apachectl graceful > $log_file 2>&1
 					if [[ $? -ne 0 ]]; then
-						error "Restarting Apache Webservice failed.\n$(cat $tmp_log_file)"
+						error "Restarting Apache Webservice failed.\n$(cat $log_file)"
 					fi
 
 				else
@@ -443,7 +529,7 @@ for _val in ${mysql_credential_args_arr[@]} ; do
          echo -e "   [$(date)] Optimize table '$table'" >> $log_file
          length_table_name=${#table}
 
-         $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $tmp_log_file 2>&1
+         $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $log_file 2>&1
 
 
          if [[ $? -ne 0 ]]; then
@@ -454,27 +540,27 @@ for _val in ${mysql_credential_args_arr[@]} ; do
             echo "" >> $log_file
             echo "  [$(date)] Repair  table '$table'" >> $log_file
 
-            $mysql $mysql_credential_args $db -N -s -e "REPAIR TABLE \`$table\`" > $tmp_log_file 2>&1
+            $mysql $mysql_credential_args $db -N -s -e "REPAIR TABLE \`$table\`" > $log_file 2>&1
 
             if [[ $? -ne 0 ]]; then
 
                _all_success=false
-               error "Repairing table '$table' failed.\n$(cat "$tmp_log_file")"
+               error "Repairing table '$table' failed.\n$(cat "$log_file")"
                error_messages_arr+=("MySQL $mysql_version: Error while repairing table '${table}' of database '$db'.")
                echo "" >> $log_file
-               echo -e "  [$(date)] error: Repairing table '$table' failed of database \"$db\" failed..\n$(cat "$tmp_log_file")" >> $log_file
+               echo -e "  [$(date)] error: Repairing table '$table' failed of database \"$db\" failed..\n$(cat "$log_file")" >> $log_file
                echo "" >> $log_file
 
             else
 
                echo -e "   [$(date)] Optimize table '$table'" >> $log_file
-               $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $tmp_log_file 2>&1
+               $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $log_file 2>&1
 
                if [[ $? -ne 0 ]]; then
-                  error "Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$tmp_log_file")"
+                  error "Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$log_file")"
                   error_messages_arr+=("MySQL $mysql_version: Error while (re-)optimizing table '${table}' of database '$db'.")
                   echo "" >> $log_file
-                  echo -e "  [$(date)] error: Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$tmp_log_file")" >> $log_file
+                  echo -e "  [$(date)] error: Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$log_file")" >> $log_file
                   echo "" >> $log_file
                else
                   info "Reoptimizing table \"${table}\" of database \"$db\" was successfully."
@@ -492,43 +578,43 @@ for _val in ${mysql_credential_args_arr[@]} ; do
       if [[ "$db" = "nd" ]]; then
 
          if $_htdocs_nd_symlinked ; then
-            rm /var/www/html/projekte/nd/htdocs > $tmp_log_file 2>&1
+            rm /var/www/html/projekte/nd/htdocs > $log_file 2>&1
             if [[ $? -ne 0 ]]; then
-               error "Error while removing symlink '/var/www/html/projekte/nd/htdocs'.\n$(cat $tmp_log_file)"
+               error "Error while removing symlink '/var/www/html/projekte/nd/htdocs'.\n$(cat $log_file)"
             fi
          fi
 
          if $_htdocs_nd_moved ; then
-            mv /var/www/html/projekte/nd/htdocs.$_service_extension /var/www/html/projekte/nd/htdocs > $tmp_log_file 2>&1
+            mv /var/www/html/projekte/nd/htdocs.$_service_extension /var/www/html/projekte/nd/htdocs > $log_file 2>&1
             if [[ $? -ne 0 ]]; then
-               error "Error while moving back '/var/www/html/projekte/nd/htdocs'.\n$(cat $tmp_log_file)"
+               error "Error while moving back '/var/www/html/projekte/nd/htdocs'.\n$(cat $log_file)"
             fi
          fi
 
-         /usr/local/apache2/bin/apachectl graceful > $tmp_log_file 2>&1
+         /usr/local/apache2/bin/apachectl graceful > $log_file 2>&1
          if [[ $? -ne 0 ]]; then
-            error "Restarting Apache Webservice failed.\n$(cat $tmp_log_file)"
+            error "Restarting Apache Webservice failed.\n$(cat $log_file)"
          fi
 
       elif [[ "$db" = "nd_archiv" ]]; then
 
          if $_htdocs_nd_archiv_symlinked ; then
-            rm /var/www/html/projekte/nd-archiv/htdocs > $tmp_log_file 2>&1
+            rm /var/www/html/projekte/nd-archiv/htdocs > $log_file 2>&1
             if [[ $? -ne 0 ]]; then
-               error "Error while removing symlink '/var/www/html/projekte/nd-archiv/htdocs'.\n$(cat $tmp_log_file)"
+               error "Error while removing symlink '/var/www/html/projekte/nd-archiv/htdocs'.\n$(cat $log_file)"
             fi
          fi
 
          if $_htdocs_nd_archiv_moved ; then
-            mv /var/www/html/projekte/nd-archiv/htdocs.$_service_extension /var/www/html/projekte/nd-archiv/htdocs > $tmp_log_file 2>&1
+            mv /var/www/html/projekte/nd-archiv/htdocs.$_service_extension /var/www/html/projekte/nd-archiv/htdocs > $log_file 2>&1
             if [[ $? -ne 0 ]]; then
-               error "Error while moving back '/var/www/html/projekte/nd-archiv/htdocs'.\n$(cat $tmp_log_file)"
+               error "Error while moving back '/var/www/html/projekte/nd-archiv/htdocs'.\n$(cat $log_file)"
             fi
          fi
 
-         /usr/local/apache2/bin/apachectl graceful > $tmp_log_file 2>&1
+         /usr/local/apache2/bin/apachectl graceful > $log_file 2>&1
          if [[ $? -ne 0 ]]; then
-            error "Restarting Apache Webservice failed.\n$(cat $tmp_log_file)"
+            error "Restarting Apache Webservice failed.\n$(cat $log_file)"
          fi
 
       fi
@@ -545,14 +631,28 @@ for _val in ${mysql_credential_args_arr[@]} ; do
       info_messages_arr+=("MySQL $mysql_version: The optimization of the MySQL tables of all databases were successful.")
    fi
 
-   if $terminal ; then
-      echo ""
-      echo -e "[ \033[37m\033[1mMySQL $mysql_version\033[m ]: Finished optimizing MySQL databases at host $(hostname -f)."
-      echo ""
+   if [[ -n "$GIVEN_DATABASE" ]] ; then
+      if $terminal ; then
+         echo ""
+         echo -e "[ \033[37m\033[1mMySQL $mysql_version\033[m ]: Finished optimizing MySQL database '$GIVEN_DATABASE'."
+         echo ""
+      fi
+      echo "" >> $log_file
+      echo "[ MySQL $mysql_version ]: Finished optimizing MySQL database '$GIVEN_DATABASE'." >> $log_file
+      echo "" >> $log_file
+   else
+      if $terminal ; then
+         echo ""
+         echo -e "[ \033[37m\033[1mMySQL $mysql_version\033[m ]: Finished optimizing MySQL databases at host $(hostname -f)."
+         echo ""
+      fi
+      echo "" >> $log_file
+      echo "[ MySQL $mysql_version ]: Finished optimizing MySQL databases at host $(hostname -f)." >> $log_file
+      echo "" >> $log_file
    fi
-   echo "" >> $log_file
-   echo "[ MySQL $mysql_version ]: Finished optimizing MySQL databases at host $(hostname -f)." >> $log_file
-   echo "" >> $log_file
+
+   (( index_arr++ ))
+
 done
 
 if [[ ${#info_messages_arr[@]} -gt 0 ]]; then
diff --git a/optimize_mysql_tables.sh b/optimize_mysql_tables.sh
index 64c5cf4..7608234 100755
--- a/optimize_mysql_tables.sh
+++ b/optimize_mysql_tables.sh
@@ -5,16 +5,21 @@ working_dir="$(dirname $(realpath $0))"
 
 conf_file="${working_dir}/conf/mysql_credetials.conf"
 
-tmp_log_file="$(mktemp)"
+# - Lock directory exists, until the script ends. So
+# - we can check, if a previos instanze is already  running.
+# -
+LOCK_DIR="/tmp/${script_name%%.*}.LOCK"
+log_file="${LOCK_DIR}/${script_name%%.*}.log"
 
 
 # -------------
-# - Variable settings
+# - Variable (default) settings
 # -------------
 DEFAULT_MYSQL_CREDENTIAL_ARGS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
-DEFAULT_LOG_FILE="/var/log/${script_name%%.*}.log"
 VERBOSE=false
 
+DEFAULT_to_addresses="argus@oopen.de"
+
 
 # -------------
 # --- Some functions
@@ -64,7 +69,14 @@ usage() {
 clean_up() {
 
    # Perform program exit housekeeping
-   rm -f $tmp_log_file
+   if [[ ${1} -gt 0 ]] ; then
+      [[ -f "${log_file}" ]] && cp ${log_file} "/var/log/"
+   else
+      rm -f "/var/log/$(basename "${log_file}")"
+   fi
+   rm -rf "$LOCK_DIR"
+
+   blank_line
    exit $1
 }
 
@@ -159,6 +171,12 @@ trim() {
     echo -n "$var"
 }
 
+blank_line() {
+   if $terminal ; then
+      echo ""
+   fi
+}
+
 detect_mysql_version () {
 
    _MYSQLD_VERSION="$(mysqld -V 2>/dev/null)"
@@ -182,29 +200,16 @@ detect_mysql_version () {
 }
 
 
-
-
-trap clean_up SIGHUP SIGINT SIGTERM
-
-
+# -------------
 # - Is this script running on terminal ?
-# -
+# -------------
+
 if [[ -t 1 ]] ; then
    terminal=true
 else
    terminal=false
 fi
 
-mysql=`which mysql`
-
-if [ -z "$mysql" ]; then
-   if [ -x "/usr/local/mysql/bin/mysql" ]; then
-      mysql=/usr/local/mysql/bin/mysql
-   else
-      fatal "No binary 'mysql' found!"
-   fi
-fi
-
 
 # -------------
 # - Read Commandline Parameters
@@ -231,6 +236,39 @@ if [[ "$(trim $*)" =~ " -h" ]] || [[ "$(trim $*)" =~ " --help" ]] ; then
 fi
 
 
+# -------------
+# - Job is already running?
+# -------------
+
+## - If job already runs, stop execution..
+## -
+if mkdir "$LOCK_DIR" 2> /dev/null ; then
+
+   ## - Remove lockdir when the script finishes, or when it receives a signal
+   trap "clean_up 1" SIGHUP SIGINT SIGTERM
+
+else
+
+   datum=`date +"%d.%m.%Y"`
+
+   msg="[ Error ]: A previos instance of \"`basename $0`\" seems already be running.\n\tExiting now.."
+
+   echo ""
+   echo "[ Error ]: A previos instance of that script \"`basename $0`\" seems already be running."
+   echo ""
+   echo -e "\tExiting now.."
+   echo ""
+
+   for _to_address in $to_addresses ; do
+      echo -e "To:${_to_address}\n${content_type}\nSubject:Error cronjob `basename $0` -- $datum\n${msg}\n" \
+         | sendmail -F "Error `hostname -f`" -f $from_address $_to_address
+   done
+
+   exit 1
+
+fi
+
+
 # -------------
 # - Load Settings from configuration file
 # -------------
@@ -241,17 +279,15 @@ else
    GIVEN_DATABASE=""
 fi
 
-if $terminal ; then
-   echo ""
-fi
+blank_line
 echononl "   Loading configuration settings from $(basename ${conf_file}).."
 if [[ -f "$conf_file" ]]; then
-   source "$conf_file" > $tmp_log_file 2>&1
+   source "$conf_file" > $log_file 2>&1
    if [[ $? -eq 0 ]]; then
       echo_ok
    else
       echo_failed
-      fatal "$(cat $tmp_log_file)"
+      fatal "$(cat $log_file)"
    fi
 else
    echo_skipped
@@ -261,7 +297,23 @@ else
 fi
 
 
-#[[ -z "$mysql_credential_args" ]] && mysql_credential_args="$DEFAULT_MYSQL_CREDENTIAL_ARGS"
+[[ -z "${to_addresses}" ]] && to_addresses="${DEFAULT_to_addresses}"
+
+
+# -------------
+# - Some default values
+# -------------
+
+mysql=`which mysql`
+
+if [ -z "$mysql" ]; then
+   if [ -x "/usr/local/mysql/bin/mysql" ]; then
+      mysql=/usr/local/mysql/bin/mysql
+   else
+      fatal "No binary 'mysql' found!"
+   fi
+fi
+
 
 if [[ -z "$mysql_credential_args" ]]; then
 	
@@ -299,12 +351,27 @@ if [[ -z "$mysql_credential_args" ]]; then
    fi
 fi
 
-[[ -z "$log_file" ]] && log_file="$DEFAULT_LOG_FILE"
 
 if [[ ${#mysql_credential_args_arr[@]} -eq 0 ]]; then
    mysql_credential_args_arr[0]="default:$mysql_credential_args"
 fi
 
+
+# ==========
+# - Begin Main Script
+# ==========
+
+# ----------
+# - Headline
+# ----------
+
+if $terminal ; then
+   echo ""
+   echo -e "\033[1m----------\033[m"
+   echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
+   echo -e "\033[1m----------\033[m"
+fi
+
 declare -i length_table_name
 declare -i number_blank_signd
 declare -i index_i
@@ -392,7 +459,7 @@ while [[ $index_arr -lt ${#mysql_credential_args_arr[@]} ]] ; do
 
          length_table_name=${#table}
 
-         $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $tmp_log_file 2>&1
+         $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $log_file 2>&1
 
 
          if [[ $? -ne 0 ]]; then
@@ -403,27 +470,27 @@ while [[ $index_arr -lt ${#mysql_credential_args_arr[@]} ]] ; do
             echo "" >> $log_file
             echo "  [$(date)] Repair  table '$table'" >> $log_file
 
-            $mysql $mysql_credential_args $db -N -s -e "REPAIR TABLE \`$table\`" > $tmp_log_file 2>&1
+            $mysql $mysql_credential_args $db -N -s -e "REPAIR TABLE \`$table\`" > $log_file 2>&1
 
             if [[ $? -ne 0 ]]; then
 
                _all_success=false
-               error "Repairing table '$table' failed.\n$(cat "$tmp_log_file")"
+               error "Repairing table '$table' failed.\n$(cat "$log_file")"
                error_messages_arr+=("MySQL $mysql_version: Error while repairing table '${table}' of database '$db'.")
                echo "" >> $log_file
-               echo -e "  [$(date)] error: Repairing table '$table' failed of database \"$db\" failed..\n$(cat "$tmp_log_file")" >> $log_file
+               echo -e "  [$(date)] error: Repairing table '$table' failed of database \"$db\" failed..\n$(cat "$log_file")" >> $log_file
                echo "" >> $log_file
 
             else
 
                echo -e "   [$(date)] Optimize table '$table'" >> $log_file
-               $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $tmp_log_file 2>&1
+               $mysql $mysql_credential_args  $db -N -s -e "OPTIMIZE TABLE \`$table\`" > $log_file 2>&1
 
                if [[ $? -ne 0 ]]; then
-                  error "Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$tmp_log_file")"
+                  error "Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$log_file")"
                   error_messages_arr+=("MySQL $mysql_version: Error while (re-)optimizing table '${table}' of database '$db'.")
                   echo "" >> $log_file
-                  echo -e "  [$(date)] error: Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$tmp_log_file")" >> $log_file
+                  echo -e "  [$(date)] error: Reoptimizing table \"${table}\" of database \"$db\" failed.\n$(cat "$log_file")" >> $log_file
                   echo "" >> $log_file
                else
                   info "Reoptimizing table \"${table}\" of database \"$db\" was successfully."