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/.