Hi Experts
i have a question around creating limited user permission on linux.
i want to make a user to full access for rwx in on specific directory! for example just /var/www/html or home directory's folder, it should not access up directory or others.
what can i do? i can use sudoers file?

thanks

No sudoers please, sudo is used for giving access to applications, not directories.
If you want to give a user full access to a specific directory just make him the owner of theat directory and set the access rights correctly. You will need the commands chown and chmod for this.
Alternatively (and better if you have several users that need access) create a new group, make that group owner of that directory and add the user to that group. Then set the access rights correctly.
For more info on access rights, users and groups have a look at chapters 9 and 10 in the Slackbook: http://www.slackbook.org/beta/

Users need to be able to at least read other directories (e.g. the user's shell program is generally in /bin, so users need to be able to execute files in /bin to be able to login). It is possible to create a chroot jail so that users can only access a subset of files on the system, but what are you trying to accomplish here?