http://www.cnblogs.com/coffee_cn/archive/2010/03/26/1697038.html
在cron里设置,每周一凌晨2点执行(每周一全备份,其余时间增量备份)
#vi backup.sh
#!/bin/bash # define dayofweek=`date "+%u"` today=`date "+%Y%m%d"` source=/data/ backup=/backup/ # action cd $backup if [ $dayofweek -eq 1 ]; then if [ ! -f "full$today.tar.gz" ]; then rm -rf snapshot tar -g snapshot -zcf "full$today.tar.gz" $source --exclude $sourceserver.log fi else if [ ! -f "inc$today.tar.gz" ]; then tar -g snapshot -zcf "inc$today.tar.gz" $source --exclude $sourceserver.log fi fi