96 lines
2.2 KiB
Markdown
96 lines
2.2 KiB
Markdown
blkid
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===
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查看块设备的文件系统类型、LABEL、UUID等信息
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## 补充说明
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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。
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### 语法
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```shell
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blkid -L | -U
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blkid [-c ] [-ghlLv] [-o] [-s ][-t ] -[w ] [ ...]
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blkid -p [-s ] [-O ] [-S ][-o] ...
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blkid -i [-s ] [-o] ...
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```
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### 选项
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```shell
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-c <file> # 指定cache文件(default: /etc/blkid.tab, /dev/null = none)
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-d # don't encode non-printing characters
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-h # 显示帮助信息
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-g # garbage collect the blkid cache
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-o <format> # 指定输出格式
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-k # list all known filesystems/RAIDs and exit
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-s <tag> # 显示指定信息，默认显示所有信息
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-t <token> # find device with a specific token (NAME=value pair)
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-l # look up only first device with token specified by -t
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-L <label> # convert LABEL to device name
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-U <uuid> # convert UUID to device name
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-v # 显示版本信息
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-w <file> # write cache to different file (/dev/null = no write)
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<dev> # specify device(s) to probe (default: all devices)
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Low-level probing options:
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-p # low-level superblocks probing (bypass cache)
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-i # gather information about I/O limits
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-S <size> # overwrite device size
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-O <offset> # probe at the given offset
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-u <list> # filter by "usage" (e.g. -u filesystem,raid)
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-n <list> # filter by filesystem type (e.g. -n vfat,ext3)
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```
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### 实例
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1、列出当前系统中所有已挂载文件系统的类型：
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```shell
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sudo blkid
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```
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2、显示指定设备 UUID：
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```shell
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sudo blkid -s UUID /dev/sda5
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```
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3、显示所有设备 UUID：
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```shell
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sudo blkid -s UUID
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```
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4、显示指定设备 LABEL：
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```shell
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sudo blkid -s LABEL /dev/sda5
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```
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5、显示所有设备 LABEL：
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```shell
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sudo blkid -s LABEL
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```
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6、显示所有设备文件系统：
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```shell
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sudo blkid -s TYPE
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```
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7、显示所有设备：
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```shell
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sudo blkid -o device
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```
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8、以列表方式查看详细信息：
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```shell
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sudo blkid -o list
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```
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