Which of the following commands will write a message to the terminals of all logged in users?
Which chown command will change the ownership to dave and the group to staff on a file named data.txt?
Which of the following apt-get commands will install the newest versions of all currently installed packages without removing any packages or installing new packages that are not already installed?
What is the name of the main configuration file for GRUB? (Please specify the file name with no path information)
grub.conf
grub.cfg
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