diff --git a/trunk/install/bak.sh b/trunk/install/bak.sh
index bfc19a19db1..8e6ed822a8d 100755
--- a/trunk/install/bak.sh
+++ b/trunk/install/bak.sh
@@ -2,11 +2,13 @@
 DATE=`date +%Y%m%d`
 OLD=`date -d"1 day ago" +"%Y%m%d"`
 OLD3=`date -d"3 day ago" +"%Y%m%d"`
-USER=`cat /etc/mysql/debian.cnf |grep user|head -1|awk  '{print $3}'`
-PASSWORD=`cat /etc/mysql/debian.cnf |grep password|head -1|awk  '{print $3}'`
-DATABASE="jol"
+config="/home/judge/etc/judge.conf"
+SERVER=`cat $config|grep 'OJ_HOST_NAME' |awk -F= '{print $2}'`
+USER=`cat $config|grep 'OJ_USER_NAME' |awk -F= '{print $2}'`
+PASSWORD=`cat $config|grep 'OJ_PASSWORD' |awk -F= '{print $2}'`
+DATABASE=`cat $config|grep 'OJ_DB_NAME' |awk -F= '{print $2}'`
 
-mysqldump -R $DATABASE -u$USER -p$PASSWORD | bzip2 >/var/backups/db_${DATE}.sql.bz2
+mysqldump -h $SERVER  -R $DATABASE -u$USER -p$PASSWORD | bzip2 >/var/backups/db_${DATE}.sql.bz2
 if tar cjf /var/backups/hustoj_${DATE}.tar.bz2 /home/judge/data /home/judge/src /home/judge/etc /var/backups/db_${DATE}.sql.bz2; then
 	rm /var/backups/hustoj_${OLD3}.tar.bz2
 	rm /var/backups/db_${OLD}.sql.bz2