在Linux下可以使用 blkid命令 对查询设备上所采用文件系统类型进行查询。blkid主要用来对系统的块设备（包括交换分区）所使用的文件系统类型、LABEL、UUID等信息进行查询。要使用这个命令必须安装e2fsprogs软件包。
首先，使用help查看一下帮助信息：
[root@localhost ~]# blkid -help
blkid from util-linux 2.23.2 (libblkid 2.23.0, 25-Apr-2013)
Usage:
blkid -L <label> | -U <uuid>
blkid [-c <file>] [-ghlLv] [-o <format>] [-s <tag>]
[-t <token>] [<dev> ...]
blkid -p [-s <tag>] [-O <offset>] [-S <size>]
[-o <format>] <dev> ...
blkid -i [-s <tag>] [-o <format>] <dev> ...
Options:
-c <file> read from <file> instead of reading from the default
cache file (-c /dev/null means no cache)
-d don't encode non-printing characters
-h print this usage message and exit
-g garbage collect the blkid cache
-o <format> output format; can be one of:
value, device, export or full; (default: full)
-k list all known filesystems/RAIDs and exit
-s <tag> show specified tag(s) (default show all tags)
-t <token> find device with a specific token (NAME=value pair)
-l look up only first device with token specified by -t
-L <label> convert LABEL to device name
-U <uuid> convert UUID to device name
-V print version and exit
<dev> specify device(s) to probe (default: all devices)
Low-level probing options:
-p low-level superblocks probing (bypass cache)
-i gather information about I/O limits
-S <size> overwrite device size
-O <offset> probe at the given offset
-u <list> filter by "usage" (e.g. -u filesystem,raid)
-n <list> filter by filesystem type (e.g. -n vfat,ext3)
实例：
再看一下单独使用blkid命令,查询所有的设备的文件系统类型：
[root@localhost ~]# blkid
/dev/sda1: UUID="80e2524e-c28e-41d6-b972-04a4506267b4" TYPE="xfs"
/dev/sda2: UUID="oDzaCO-MYpf-3iTx-f0dF-KPwe-eU32-P1Bjwd" TYPE="LVM2_member"
/dev/mapper/centos-root: UUID="bdd898cb-f42a-422e-b66e-1fe65e8ecc21" TYPE="xfs"
/dev/mapper/centos-swap: UUID="d76c8d7c-9f03-4db3-8846-eb8bdf907f12" TYPE="swap"
查询指定设备的文件系统类型:
[root@localhost ~]# blkid /dev/sda1
/dev/sda1: UUID="80e2524e-c28e-41d6-b972-04a4506267b4" TYPE="xfs"
查看指定设备的UUID：
[root@localhost ~]# blkid -s UUID /dev/sda1
/dev/sda1: UUID="80e2524e-c28e-41d6-b972-04a4506267b4"
显示所有设备文件系统：
[root@localhost ~]# blkid -s TYPE
/dev/sda1: TYPE="xfs"
/dev/sda2: TYPE="LVM2_member"
/dev/mapper/centos-root: TYPE="xfs"
/dev/mapper/centos-swap: TYPE="swap"
显示所有设备：
[root@localhost ~]# blkid -o device
/dev/sda1
/dev/sda2
/dev/mapper/centos-root
/dev/mapper/centos-swap
以列表方式查看详细信息：
[root@localhost ~]# blkid -o list
device fs_type label mount point UUID
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
/dev/sda1 xfs /boot 80e2524e-c28e-41d6-b972-04a4506267b4
/dev/sda2 LVM2_member (in use) oDzaCO-MYpf-3iTx-f0dF-KPwe-eU32-P1Bjwd
/dev/mapper/centos-root xfs / bdd898cb-f42a-422e-b66e-1fe65e8ecc21
/dev/mapper/centos-swap swap <swap> d76c8d7c-9f03-4db3-8846-eb8bdf907f12
