# Show all available block devices along with their partitioning schemes
lsblk

# To show SCSI devices:
lsblk --scsi

# To show a specific device
lsblk /dev/sda

# To verify TRIM support:
# Check the values of DISC-GRAN (discard granularity) and DISC-MAX (discard max bytes) columns.
# Non-zero values indicate TRIM support
lsblk --discard

# To featch info about filesystems:
lsblk --fs

# For JSON, LIST or TREE output formats use the following flags:
lsblk --json
lsblk --list
lsblk --tree # default view