centos mysql定时备份

#!/bin/sh
DUMPDIR=xxx
DATE=`date '+%Y%m%d-%H%M'`
cd $DUMPDIR
#单表备份
#mysqldump -uxxx -pxxx --single-transaction --default-character-set=utf8 db table > xxx.sql
#vsdb全库备份
mysqldump -uxxx -pxxx --single-transaction --default-character-set=utf8 db > xxx.sql
if [[ $? == 0 ]];then
  mv *.tar bak
  tar czf $DATE.tar xxx.sql
  if [[ $? == 0 ]];then
    rm -f bak/*.tar
  else
    mv bak/*.tar ./
  fi
fi
rm -f xxx.sql