How to tell what type of filesystem you're on?

Question

Is there a command to tell what type of filesystem you're using?

Answer 1

If you do:

df -k .

It will tell you what filesystem your current directory is on.

Answer 2

Your question can be taken several ways. Literally Karlson's answer is pretty cool because it tells you the filesystem of the volume | partition that you are currently on.

df -hT I have always liked this command because it shows you all the "standard" filesystems that are mounted and does it in human-readable size format.

However, you may have other disks or volumes that are not mounted (commented out), failed to mount, or have been unmounted. Another thing you can do is to run cat /etc/fstab this will show you the "filesystem table" and list the filesystems that are supposed to be mounted on boot along with the location, filesystem type, mountpoint, and more.

Answer 3

$ stat -f -c %T /
xfs
$ stat -f -c %T /boot
ext2/ext3
$ stat -f -c %T /srv
btrfs
$ stat -f -c %T /tmp
tmpfs

Answer 4

You can also use lsblk -f and blkid to get information about your filesystems and their properties.

Answer 5

df -T . | awk '{ getline ; print $2 }'

Answer 6

Run df ., which will tell you on what filesystem the current directory resides. Then run mount, which will produce a list of mounted filesystems along with their types and mount options. This works for me:

mount | fgrep -w "`df . | grep '%' | sed -e 's/.*% *//'`"

Answer 7

Just use blkid -o value -s TYPE "$DEV", it also works for unmounted devices or even image files.

Answer 8

cat /etc/mtab for mounted filesystems.