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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.
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.