Hello Folks,

I have set up SFTP file server where I have enabled jail Shell and locked the users in their home directory. This is working fine but what if few users would like to share the files among themselves? Since chroot doesn't allow me go back and see other file structure not sure how can I implement it.

Any clue?

e.g. user.example. ---> Allows to login directly into /home/user.example

user.example would also need access or /share.

Instead of locking the users in their home directories, why don't you just jail all of /home?
Then just change all the permissions under /home to rwx-r-x---
The files under those directories should be rwx-r----
This way you can share between /home directories, but each user can't modify any files that are not their own.

This is the only way I know how to do it without breaking the jail.
For files that you don't to share you can change the permissions on the files or folder to rwx-------- this way only the owner of the file/directory can access and read it.