Hello people. I am completely new to Unix. I wanted to ask you if there is any website that has a list of only QUESTIONS that I can practice some basic commands with..only list of questions testing usage of commands in different ways?? Actually I have an open-book beginners exam coming soon and i want to practice as many twisted questions as possible.

Secondly,is there any way of retrieving file permissions apart from in a LAYMAN readable form. "ls -l" retrieves file permissions in the form od -rw-rw---x 12 owner.name group .......

say i want the information in a table like style.

Owener read write ----
group read write ---
other ---- ---- exec

I can do it using echo and create a table using tabs and all...
and so on....

Thirdly, I am using SSH prtocol to access a unix server to practice all commands. Is it possible that some commands dont run in the same way as they would on an actual unix machine.