What does the command mount -a do?
It ensures that all file systems listed with the option noauto in /etc/fstab are mounted.
It shows all mounted file systems that have been automatically mounted.
It opens an editor with root privileges and loads /etc/fstab for editing.
It ensures that all file systems listed with the option auto in /etc/fstab are mounted.
It ensures that all file systems listed in /etc/fstab are mounted regardless of their options.
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