mysql的本地备份和双机相互备份脚本

以下为引用的内容：
#!/bin/sh
# mysqldump_all.sh
# this scripts is used to backup MySQL database bettwen tow MySQL SERVER!

# define host and mysql password
REMOTE_HOST=""
REMOTE_PASSWORD=""

# define database path
DB_PATH="/var/lib/mysql"
LOCAL_PASSWORD=""
DB_BACKUP_PATH="/root/db_bk"

# define which database no back up, write db anme escap whit space!
# example;
# NO_BACKUP_DB="yns test ps_note"
# this said that if db name is "yns" or "test" or "ps_note", then not backup them!

NO_BACKUP_DB=""

# get the database name and process one by one
echo "Start to Backup...";
#ls /var/lib/mysql > /tmp/mydb.all
if [ "$1" !="help" ]; then
for db in `ls $DB_PATH`; do
if_backup="1"
if [ -d $DB_PATH/$db ] ; then
for noBackDB in $NO_BACKUP_DB ; do
if ( test "$db"="$noBackDB" ); then
#echo -n "...";
if_backup="";
fi
done
if [ $if_backup ]; then
case "$1" in

first)
echo -n "Crate db [ $db ] on $REMOTE_HOST first!"
result=`mysqladmin -h $REMOTE_HOST --password=$REMOTE_PASSWORD create $db`
if [ ! $result ]; then
echo "...Done!";
else
echo "...Fialed! check your configure plz!";
echo "Remote host said: $result";
exit
fi
;;

local)
# back up to localhost dir.
if [ ! -d $DB_BACKUP_PATH ]; then
mkdir $DB_BACKUP_PATH
fi
echo -n "[ $db ]....Backup to local$DB_BACKUP_PATH with gzip";
if [ -e "$DB_BACKUP_PATH/$db.gz" ]; then
mv $DB_BACKUP_PATH/$db.gz $DB_BACKUP_PATH/$db.1.gz;
fi
mysqldump --password=Walte#Ming $db | gzip > $DB_BACKUP_PATH/$db.gz
echo "...[OK]"
;;

*)
# Do common Backup!
echo -n "[ $db ]...Do Backup!====>> $REMOTE_HOST/$db";
mysqldump --add-drop-table $db --password=$LOCAL_PASSWORD | mysql -h $REMOTE_HOST --password=$REMOTE_PASSWORD $db
echo "....[OK]";
esac
else
echo "[ $db ]";
echo "***This database set to Not backup!...Operation CANCELED!";
fi
else
echo "[ $db ]";
echo "***Warning! Not a DataBbase. Backup Canceled***";
fi
done

else
echo "Usage: mysqldupm_all.sh [firs|local|help]";
echo "Some question ask for walteyh@sohu.com";
fi

# Ended all backup opretion!
echo "";
echo "Note: if there is come wrong message white MySQL, you should check your configure first!";
exit