What does the command mount -a do?
A.
It ensures that all file systems listed in /etc/fstab are mounted regardless of their
options.
B.
It ensures that all file systems listed with the option auto in /etc/fstab are mounted.
C.
It opens an editor with root privileges and loads /etc/fstab for editing.
D.
It ensures that all file systems listed with the option noauto in /etc/fstab are
mounted.
E.
It shows all mounted file systems that have been automatically mounted.
Extract from the manpages to mount:
The command mount -a
causes all file systems listed in fstab to be mounted as specified except those whose line contains the keyword noauto.
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