首先rsync命令是單向同步，

rsync -avv left/ right/ 

right不會影響到left。

排除文件（夾）

rsync -arv --exclude-from='/home/ben/exclude_me.txt' /home/ben /media/ben/thumbdrive/

exclude_me.txt

.ccache
build
.java
.gvfs
.xsession-errors

• /dir/ means exclude the root folder /dir
• /dir/* means get the root folder /dir but not the contents
• dir/ means exclude any folder anywhere where the name contains dir/

遠程到本地

rsync -a username@remote_host:/home/username/dir1 place_to_sync_on_local_machine

本地到遠程

rsync -a ~/dir1 username@remote_host:destination_directory