It's surely easy to do while using a graphical environment, but when I'm using the shell I have no idea on how to do that, I already tried to use
delete, and I discovered that these word are not existent commands on the shell.
You'd really benefit from reading basic tutorials (see links below) on using a Linux/Unix system from the command line, or picking up an intro text from your local library. If you are somewhat familiar with the Windows command shell, then you will find some basic similarities (of course the commands are still different).
In the meantime, check out the manual (a.k.a. man) pages. To find out more about them you can type
at the command prompt.
Another very useful command line switch to use with
-k, it will list commands related to the search term you list. For instance
man -k delete
will list all the commands that have to do with "delete". Of course you have to be somewhat selective in what you search on. A
man -k file will get you tons of commands since most commands do something with files :)
I just did this google search: "how to use the unix command line" and found a bunch of pages. Here are 3 that might be helpful:
and I bet there are some intro videos on youTube (<- check this link :) too.