blkid & lsblk

Question 1

blkid

Answer 1

The blkid program is the command-line interface to working with the libblkid(3) library

Question 2

blkid -i /dev/sda1

Answer 2

This command displays the I/O limits for sda1

i, –infor, Gather info about I/O limits.

Question 3

blkid -p /dev/sda

Answer 3

This command displays additional information straight from the superblock.

-p, –probe, Low-level superblock probing(cache bypass)

Question 4

blkid -l -t LABEL=/home

Answer 4

This command looks up the parameters for a specific search criteria.

• l, –list-one, Look up only first device with token specified by -t.
• t, –match-token <token>, Fond device with a specific token (NAME=value pair)</token>

Question 5

blkid -t TYPE=ext2

Answer 5

This command will display all of the disks with a TYPE of ext2.

NAME=value:

TYPE=

LABEL=

UUID=

Question 6

blkid -L /home

or

blkid -U 6e0acfe3-81ed-4f9f-8ab5-0d65ba1f0ef2

Answer 6

These commands are used to search for Labels and UUIDs.

• L, –label label, Look up the device that uses this fs label.
• U, –uuid uuid, Look up the device that uses this fs uuid.

Question 7

blkid -o full

Answer 7

The -o flag is to set the output format, this command is the same as using blkid with no arguments.

blkid -o:

full, value, list, device, udev, export