NAME

       lsblk - list block devices

SYNOPSIS

       lsblk [options]

       lsblk [options] device...

DESCRIPTION

       lsblk lists information about all or the specified block devices.  The lsblk command reads
       the sysfs filesystem to gather information.

       The command prints all block devices (except RAM disks) in a tree-like format by  default.
       Use lsblk --help to get a list of all available columns.

OPTIONS

       -a, --all
              List all block devices.

       -b, --bytes
              Print the SIZE column in bytes rather than in human-readable format.

       -d, --nodeps
              Don't print device holders or slaves.  For example "lsblk --nodeps /dev/sda" prints
              information about the sda device only.

       -D, --discard
              Print information about the discard (TRIM, UNMAP) capabilities for each device.

       -e, --exclude list
              Exclude the devices specified by a comma-separated list of  major  device  numbers.
              Note that RAM disks (major=1) are excluded by default.

       -f, --fs
              Output    info   about   filesystems.    This   option   is   equivalent   to   "-o
              NAME,FSTYPE,LABEL,MOUNTPOINT".  The authoritative information about filesystems and
              raids is provided by the blkid(8) command.

       -h, --help
              Print a help text and exit.

       -i, --ascii
              Use ASCII characters for tree formatting.

       -m, --perms
              Output  info  about device owner, group and mode.  This option is equivalent to "-o
              NAME,SIZE,OWNER,GROUP,MODE".

       -l, --list
              Use the list output format.

       -n, --noheadings
              Do not print a header line.

       -o, --output list
              Specify which output columns to print.  Use --help to get a list of  all  supported
              columns.

       -P, --pairs
              Use key="value" output format.

       -r, --raw
              Use the raw output format.

       -t, --topology
              Output  info  about  block  device  topology.   This  option  is  equivalent to "-o
              NAME,ALIGNMENT,MIN-IO,OPT-IO,PHY-SEC,LOG-SEC,ROTA,SCHED".

NOTES

       For the partitions are some information (e.g. queue attributes)  inherited  from  parental
       device.

AUTHORS

       Milan Broz <mbroz@redhat.com>
       Karel Zak <kzak@redhat.com>

SEE ALSO

       findmnt(8), blkid(8), ls(1)

AVAILABILITY

       The   lsblk   command   is   part   of  the  util-linux  package  and  is  available  from
       ftp://ftp.kernel.org/pub/linux/utils/util-linux/.