67 lines
1.9 KiB
Groff
67 lines
1.9 KiB
Groff
.\" -*- nroff -*-
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.TH LSBLK 8 "Apr 2010" "Version 1.0"
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.SH NAME
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lsblk \- list block devices
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.SH SYNOPSIS
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.B lsblk
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.RB [ options ]
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.sp
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.B lsblk
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.RB [ options ]
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.IR device...
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.SH DESCRIPTION
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.B lsblk
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will list information about all or selected block devices. The
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.B lsblk
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command reads
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.I sysfs
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filesystem to gather information.
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.PP
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The command prints all block devices (except RAM disks) in the tree-like format
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by default. See
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.B "lsblk --help"
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to get list of all available columns.
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.SH OPTIONS
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.IP "\fB\-a, \-\-all\fP"
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List all block devices.
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.IP "\fB\-b, \-\-bytes\fP"
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Print the SIZE column in bytes rather than in human readable format.
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.IP "\fB\-e, \-\-exclude \fIlist\fP
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Exclude devices by comma delimited list of major device numbers. Note that RAM
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disks (major=1) are excluded by default.
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.IP "\fB\-f, \-\-fs\fP
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Output info about filesystems. This option is equivalent to -o NAME,FSTYPE,LABEL,MOUNTPOINT.
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The authoritative information about filesystems and raids are provided by
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.BR blkid (8)
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command.
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.IP "\fB\-h, \-\-help\fP"
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Print help and exit.
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.IP "\fB\-i, \-\-ascii\fP"
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Use ascii characters for tree formatting.
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.IP "\fB\-m, \-\-perms\fP
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Output info about device owner, group and mode. This option is equivalent to -o NAME,SIZE,OWNER,GROUP,MODE.
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.IP "\fB\-l, \-\-list\fP"
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Use the list output format.
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.IP "\fB\-n, \-\-noheadings\fP"
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Do not print a header line.
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.IP "\fB\-o, \-\-output \fIlist\fP"
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Define output columns. Use
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.B "--help"
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to get list of all supported columns.
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.IP "\fB\-r, \-\-raw\fP"
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Use raw output format.
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.IP "\fB\-t, \-\-topology\fP"
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Output info about block device topology. This option is equivalent to -o NAME,ALIGNMENT,MIN-IO,OPT-IO,PHY-SEC,LOG-SEC,ROTA,SCHED.
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.SH AUTHORS
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.nf
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Milan Broz <mbroz@redhat.com>
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Karel Zak <kzak@redhat.com>
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.fi
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.SH SEE ALSO
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.BR findmnt (8),
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.BR blkid (8),
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.BR ls (1)
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.SH AVAILABILITY
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The lsblk command is part of the util-linux package and is available from
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ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
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