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158 lines
6.2 KiB
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7 Ways to Determine the File System Type in Linux (Ext2, Ext3 or Ext4)
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============================================================
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A file system is the way in which files are named, stored, retrieved as well as updated on a storage disk or partition; the way files are organized on the disk.
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A file system is divided in two segments called: User Data and Metadata (file name, time it was created, modified time, it’s size and location in the directory hierarchy etc).
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In this guide, we will explain seven ways to identify your Linux file system type such as Ext2, Ext3, Ext4, BtrFS, GlusterFS plus many more.
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### 1\. Using df Command
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df command reports file system disk space usage, to include the file system type on a particular disk partition, use the `-T` flag as below:
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```
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$ df -Th
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OR
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$ df -Th | grep "^/dev"
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```
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[
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][3]
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df Command – Find Filesystem Type
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For a comprehensive guide for df command usage go through our articles:
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1. [12 Useful “df” Commands to Check Disk Space in Linux][1]
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2. [Pydf – An Alternative ‘df’ Command That Shows Disk Usage in Colours][2]
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### 2\. Using fsck Command
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fsck is used to check and optionally [repair Linux file systems][4], it can also print the [file system type on specified disk partitions][5].
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The flag `-N` disables checking of file system for errors, it just shows what would be done (but all we need is the file system type):
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```
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$ fsck -N /dev/sda3
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$ fsck -N /dev/sdb1
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```
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[
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][6]
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fsck – Print Linux Filesystem Type
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### 3\. Using lsblk Command
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lsblk displays block devices, when used with the `-f` option, it prints file system type on partitions as well:
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```
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$ lsblk -f
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```
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][7]
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lsblk – Shows Linux Filesystem Type
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### 4\. Using mount Command
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mount command is used to [mount a file system in Linux][8], it can also be used to [mount an ISO image][9], [mount remote Linux filesystem][10] and so much more.
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When run without any arguments, it prints [info about disk partitions][11] including the file system type as below:
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```
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$ mount | grep "^/dev"
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```
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[
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][12]
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Mount – Show Filesystem Type in Linux
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### 5\. Using blkid Command
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blkid command is used to [find or print block device properties][13], simply specify the disk partition as an argument like so:
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```
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$ blkid /dev/sda3
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```
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[
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][14]
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blkid – Find Filesystem Type
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### 6\. Using file Command
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file command identifies file type, the `-s` flag enables reading of block or character files and `-L` enables following of symlinks:
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```
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$ sudo file -sL /dev/sda3
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```
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[
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][15]
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file – Identifies Filesystem Type
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### 7\. Using fstab File
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The /etc/fstab is a static file system info (such as mount point, file system type, mount options etc) file:
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```
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$ cat /etc/fstab
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```
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[
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][16]
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Fstab – Shows Linux Filesystem Type
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That’s it! In this guide, we explained seven ways to identify your Linux file system type. Do you know of any method not mentioned here? Share it with us in the comments.
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--------------------------------------------------------------------------------
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作者简介：
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Aaron Kili is a Linux and F.O.S.S enthusiast, an upcoming Linux SysAdmin, web developer, and currently a content creator for TecMint who loves working with computers and strongly believes in sharing knowledge.
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--------------------------------------------------------------------------------
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via: http://www.tecmint.com/find-linux-filesystem-type/
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作者：[Aaron Kili][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.tecmint.com/author/aaronkili/
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[1]:http://www.tecmint.com/how-to-check-disk-space-in-linux/
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[2]:http://www.tecmint.com/pyd-command-to-check-disk-usage/
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[3]:http://www.tecmint.com/wp-content/uploads/2017/03/Find-Filesystem-Type-Using-df-Command.png
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[4]:http://www.tecmint.com/defragment-linux-system-partitions-and-directories/
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[5]:http://www.tecmint.com/manage-file-types-and-set-system-time-in-linux/
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[6]:http://www.tecmint.com/wp-content/uploads/2017/03/fsck-Print-Linux-Filesystem-Type.png
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[7]:http://www.tecmint.com/wp-content/uploads/2017/03/lsblk-Shows-Linux-Filesystem-Type.png
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[8]:http://www.tecmint.com/sshfs-mount-remote-linux-filesystem-directory-using-ssh/
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[9]:http://www.tecmint.com/extract-files-from-iso-files-linux/
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[10]:http://www.tecmint.com/sshfs-mount-remote-linux-filesystem-directory-using-ssh/
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[11]:http://www.tecmint.com/linux-tools-to-monitor-disk-partition-usage/
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[12]:http://www.tecmint.com/wp-content/uploads/2017/03/Mount-Show-Filesystem-Type.png
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[13]:http://www.tecmint.com/find-usb-device-name-in-linux/
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[14]:http://www.tecmint.com/wp-content/uploads/2017/03/blkid-Find-Filesystem-Type.png
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[15]:http://www.tecmint.com/wp-content/uploads/2017/03/file-command-identifies-filesystem-type.png
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[16]:http://www.tecmint.com/wp-content/uploads/2017/03/fstab-shows-filesystem-types.png
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[17]:http://www.tecmint.com/find-linux-filesystem-type/#
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[18]:http://www.tecmint.com/find-linux-filesystem-type/#
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[19]:http://www.tecmint.com/find-linux-filesystem-type/#
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[20]:http://www.tecmint.com/find-linux-filesystem-type/#
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[21]:http://www.tecmint.com/find-linux-filesystem-type/#comments
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[22]:http://www.tecmint.com/author/aaronkili/
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[23]:http://www.tecmint.com/10-useful-free-linux-ebooks-for-newbies-and-administrators/
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[24]:http://www.tecmint.com/free-linux-shell-scripting-books/
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