我们知道 rsync 可以实现推送和拉取，而 inotify-tools 借助内核的 inotify 机制实现了文件的 实时监控。因此，借助这个思路，我们可以通过使用 shell 脚本，调整 inotifywait 的输出格式， 然后借助 inotifywait 的监控文件或目录实时变化去通知 rsync 做相应的推送或者拉取操作！ 实时备份脚本

[root@rsync-client-inotify ~]# cat auto_rsync.sh

src1='/data/web/redhat.sx/'

src2='/data/web_data/redhat.sx/'
des1=web

des2=data
host1=172.16.100.1
host2=172.16.100.1
user=rsync_backup

allrsync='/usr/bin/rsync -rpgovz --delete --progress'

/usr/local/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M' --format '%T %w %w

%f %e' -e modify,delete,create,attr

ib $src | while read DATE TIME DIR FILE EVENT;

do

case $DIR in

${src1}*)

$allrsync $src1 $user@$host1::$des1 --password-file=/etc/rsync.password && echo "

$DATE $TIME $FILE was rsynced" &>> /var/log

/rsync-$des1-$host1.log

$allrsync $src1 $user@$host2::$des1 --password-file=/etc/rsync.password && echo "

$DATE $TIME $FILE was rsynced" &>> /var/log

/rsync-$des1-$host2.log;;

${src2}*)

$allrsync  $src2 $user@$host1::$des2 --password-file=/etc/rsync.password &&
echo "

$DATE $TIME $FILE was rsynced" &>> /var/lo g/rsync-$des2-$host1.log

$allrsync  $src2 $user@$host2::$des2 --password-file=/etc/rsync.password &&
echo "

$DATE $TIME $FILE was rsynced" &>> /var/lo