How to identify a filesystem type in Linux System

There are multiple ways to determine the file system type in a Linux Based Environment

1) df -Th

for this to work the filesystem should be mounted

2) fsck -N /dev/device

fsck -N /dev/sdb2

3) lsblk -f

Displays the block device with filesystem type details

4) mount |grep -i "device"

mount| grep -i "sdb2"

5) blkid /dev/device

blkid /dev/sdb2

6) cat /etc/fstab

This would only work if the filesystem is updated in fstab.