Fix errors in case of multiple mysql installations.

flush_query_cache.sh

@@ -242,8 +242,17 @@ while [[ $index_arr -lt ${#mysql_credential_args_arr[@]} ]] ; do
    if [[ $? -eq 0 ]]; then
       echo_ok
    else
-      echo_failed
-      error "$(cat $tmp_log_file)"
+      if [[ "$(cat $tmp_log_file)" =~ "unknown variable 'login-path" ]] ; then
+         if [[ -x "/usr/local/mysql/bin/mysql" ]] ; then
+            /usr/local/mysql/bin/mysql $mysql_credential_args -N -s -e "FLUSH QUERY CACHE"  > $tmp_log_file 2>&1
+            if [[ $? -ne 0 ]] ; then
+               echo_failed
+               error "$(cat $tmp_log_file)"
+            else
+               echo_ok
+            fi
+         fi
+      fi
    fi
 
    (( index_arr++ ))