Write the next sentence in this paragraph:

How to get familiar with ubuntu commands 
Read this list of basic commands and become familiar with them. 
Sudo (" superuser do ")-allows you to run other commands with administrative privileges. This is useful when, for example, you need to modify files in a directory that your user wouldn't normally have access to.

OPT:
[a]. Cma (" administrative app] c§ ")-allows you to use windows os x 9320 or earlier. It is not useful when, for example, you need to program a new language.
[b]. Cd (" change directory ")-changes the directory you are currently working in. You can use full paths to folders or simply the name of a folder within the directory you are currently working.
[c]. Command prompt: this command is usually expanded at the end of additional commands such as, " request administrative privileges " or " create new user. " write down commands that you would use for multiple users (i.e.
[d]. Your usually runs the command " shrink ". Below that is a master command from an ubuntu driver.
[b].