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Findmnt – Find all mounted filesystems on Linux

  • Difficulty Level : Easy
  • Last Updated : 23 Aug, 2021

Findmnt is a command-line tool in Linux which lists the all-mounted file system on the system. findmnt searches for the mounted file in t/etc/fstab, /etc/mtab, or /proc/self/mountinf locations. By default, it shows all mounted file systems on the system. This command is preinstalled on the system. This command comes with package util-Linux. Now let see how to use the findmnt tool.

Listing the file system

To see all file systems mounted on the system, we can simply use the findmnt command:


Then the output will be in the tree-like structure.

The columns in the output show the following information:

  • TARGET: It shows target mount point
  • SOURCE: It shows the source device
  • FSTYPE: It shows the type of file system.
  • OPTIONS: It will show the file system mount options.

 Files system in a list format

By default, findmnt shows the output in the form of tree like structure. To get output in the form list, use -l option with the findmnt command:

findmnt -l

Listing the system in df format:

To get the output in the form of df command like output format, use findmnt with option -D or –df. This option will show the output in the form of df format.

findmnt -D

fstab output list:

To show the Filesystem information, fetched from the directory  /etc/fstab file and /etc/fstab.d use findmnt command with -s or –fstab options.

findmnt -s

Filter out file system:

To get the output of specific file systems types, we can use -t or –types option with findmnt command. To filter multiple file systems, mention file system type separated by comma.

findmnt -t ext4

Raw Output:

To get the output in the format in a random fashion use the -r or –raw option with findmnt command.

find -r

Search with the source device

To get the output of the specific source device, use the -S with findmnt command.

findmnt -S /dev/sda2

Search by mount point

To get the output in of specific TARGET or mount point, use the -T or –target option with findmnt command

findmnt -T /

To know more about the findmnt command, read the man page of the findmnt.

man findmnt

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