> 
> Imagine you were working on a system
>  and someone accidentally deleted the
>  `ls` command (`/bin/ls`). How could
>  you get a list of the files in the
>  current directory? Try it.
> 
> 
> 

I tried many methods and also searched on the Internet but nothing. I want to ask beside `ls` command what command can we use to list out all the files.