sync - Linux 如何保持两个文件夹内容一致

Question

Linux 如何保持两个文件夹内容一致 ?

比如

~/dock1 ~/dock2

要保证完全一致 ...

软连接是不行的好像

Answer 1

If soft links don’t work, use hard links

Answer 2

It can be done using hard links, but the operations are on the same storage block and hard links cannot cross zones.
Using rsync+cron, you can achieve consistent and automatic synchronization of all contents in two files or even folders.

Answer 3

If everything must be exactly the same (permissions, properties, modification date, etc.)

dd if=/dev/null count=100 bs=1M of=somefile
mkfs somefile
mount somefile /some/dir
mount somefile /another/dir

It really depends on what you want to do