![]() The latter is an interpretation that occurred later, because su is a command that lets you become another user. Sudo stands for "superuser do" if you are a purist and "substitute user do" if you are openminded. The command will remember your password for a default timeout period of some minutes. Now notice that if you quickly run another command using sudo, you won't be asked for your password. Behind the scenes, it will log the commands you have executed. This command will ask for your password, check that you have permissions to run sudo (which you are automatically granted when creating machines using RONIN), and execute the installation command as root. Hence, as a regular user, you need to use the sudo command to install the program on your machine as follows: sudo apt install wget To be able to install this utility on the system, you need root level privileges. For example, the utility wget is useful for scripting the download of web files. Similar to a user with administrator privileges on a standard PC.īecause the root user has such power, in most Linux installations root has no password, and instead regular users become root temporarily by running the program sudo. While most users have rather limited permissions to access their own files and run applications, root is a user who has the ability to do practically anything, including installing systems software and granting and revoking permissions for other users. You can check what your current username is at any time using the whoami command. The user name is usually reflected in the path of their home directories, and shows up in many Linux commands to identify who is running a process or who has access to files. Users on a Linux system have unique user names that identify them from other users. ![]() ![]() Another user on that computer, that is, including the supreme superuser who has permissions to do anything, whose name is "root". Everyone who creates a machine or a cluster in RONIN has a superpower: the ability to become somebody else. ![]()
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