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mkfs -t ext2 /dev/sdb1
mkfs -t ext2 /dev/sdb5
mkfs.ext2 /dev/sdb5
mkfs -t ext3 /dev/sdb6
mkfs.ext3 /dev/sdb7
mkfs -t vfat /etc/sdb8
mkfs.vfat /dev/sdb9
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mount /dev/sdb1 /mnt/sdb1
df
ls /mnt/sdb1
umount /mnt/sdb1
mount /dev/sdb1 /mnt/sdb1
mount /dev/sdb5 /mnt/sdb5
mount /dev/sdb6 /mnt/sdb6
mount /dev/sdb7 /mnt/sdb7
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cd
umount /mnt/sdb1
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