blkid command is used to view the file system type, LABEL, UUID, and other information of the block device. It is a very useful command for Linux system administrators to identify the block devices and their attributes.
blkid command is used to display the attributes of block devices, such as the file system type, UUID, and LABEL. The command is very easy to use and can be executed with the following syntax:
blkid [options] [device...]
To view the information of all the block devices, simply execute the command without any options or arguments:
The output of the command will display the attributes of all the block devices, such as the device name, file system type, UUID, and LABEL.
To view the information of a specific block device, specify the device name as an argument:
This will display the attributes of the block device
blkid command has several options available to customize its behavior. The following table lists the available options:
|-c||Use the specified cache file instead of the default cache file|
|-p||Print the output in a parsable format|
|-s||Specify the attribute to display (e.g. -s TYPE)|
|-t||Specify the device type (e.g. -t LABEL)|
|-o||Specify the output format (e.g. -o export)|
|-h||Display help information|
If you are having trouble viewing the attributes of a block device, make sure that the device is mounted and that you have the necessary permissions to access it. If the device is not mounted, you can use the
mount command to mount it. If you do not have the necessary permissions, you can use the
sudo command to run the
blkid command with administrative privileges.
blkidcommand uses a cache file to store the attributes of block devices. By default, the cache file is located at
/run/blkid/blkid.tab. You can use the
-coption to specify a different cache file.
blkidcommand can be used in scripts to automate tasks that require the attributes of block devices.
blkidcommand can be used in conjunction with other commands, such as
fdisk, to obtain a complete picture of the block devices on a system.