mount -a

 mount -a
 mount: /path/to/your/dir: unknown filesystem type 'defaults'.

mount -a
(no output)

Related terms

• /etc/fstab

See also

• File systems: mount, umount, findmnt, find, swapon, swapoff, UUID, blkid, mount options: /etc/fstab, udisksctl mount, guestmount, /proc/mounts, fstrim, systemd-mount, defaults