Shell script to know whether a filesystem is already mounted

Question

I am working on the tmpfs file system mounted on the particular directory. I want to write my shell script to check whether the tmpfs filesystem is already mounted on the directory.

Answer 1

Use the below code to check the type of the filesystem.

$ stat -f -c '%T' /

xfs

$ stat -f -c '%T' /dev/shm

tmpfs

You can also check whether the directory is a mountpoint by comparing its device with its parent's.

$ stat -c '%D' /

901

$ stat -c '%D' /home

fe01

$ stat -c '%D' /home/$USER

fe01

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