Restrict viewing of files, subdirectories

[mjc]

I have userA with files and subdirectories:
/home/userA
/home/userA/subdir1,

userA only has access to files in /home/userA/subdir1 and is not allowed to move to /home/userA or anywhere else.

Similar for user B, this user only has access to /home/userB/subdir1

userC on the other hand is allowed to view contents of:
/home/userA,
/home/userA/subdir1
/home/userB,
/home/userb/subdir1
/home/userC
etc.

My question, how do I set up permissions; either in the password file, chmod, or elsewhere?

Thanks in advance

[abhishek456]

you can use chmod to change file permissions

Chmod tutorial

the above link provides you a lot of information on using Chmod

[valan]

This could be tough to accomplish, normally the user needs access to files in their home directory for configuration purposes. Also, to execute programs, that user will also need access to those programs. My thoughts are that if you don't already know how to do this, it's likely you'll be going in over your head if you want to limit users like this. But other than that, read up on the chmod man page.

[mjc]

I think I may have found a way; through their passwd file; I would jail them to /home/userA/subdir1 instead of /home/userA.