Final answer:
The command 'df > execule' will direct the disk space usage output to a file named execule, overwriting its content. The user directories are stored in the '/home' directory. The 'usermod -c' command is used to change a user's full name and the 'nano' command is used to edit the contents of a file.
Step-by-step explanation:
The command df > execule will perform the action of redirecting the output of the df command (which displays the amount of disk space available on the file system containing each file name argument) to a file named execule. This will overwrite any existing content in the file with the new output or will create the file if it doesn't exist.The directory where all the user directories will be stored is /home.For modifying user details like changing the full name of the user named michael to 'Michalle', the command would be usermod -c 'Michalle' michael.When a user account is created, this event occurs during the process of installation of a system or when an administrator explicitly creates it using a command such as useradd.To view and possibly edit the content of a file, a user may use the nano command, which is a text editor.
While cat can be used to view file content, it does not offer editing capabilities.The command df in Ubuntu is used to display information about file systems. The > symbol is used for output redirection, allowing you to redirect the output of a command to a file instead of displaying it on the screen. In this case, the command df > execule will redirect the output of the df command to a file named execule.Regarding the second question, the command to modify the details of a user named michael would be usermod -c Michalle michael. This command changes the comments field of the user's entry in the password file.Lastly, to view and edit the content of a file in Ubuntu, the command nano can be used.