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    Command:

    lsblk

    
    
    

    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.
    
           The default output as well as default output from options like --topol-
           ogy  and  --fs  is  subject  to change, so whenever possible you should
           avoid using default outputs in your scripts. Always  explicitly  define
           expected columns by --output columns in environment where a stable out-
           put is required.
    
    
    

    OPTIONS

           -a, --all
                  lsblk does not list empty devices by default. This  option  dis-
                  ables this restriction.
    
           -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. The filter is applied to the top-level devices only.
    
           -I, --include list
                  Include  devices  specified  by  a comma-separated list of major
                  device numbers only.  The filter is  applied  to  the  top-level
                  devices.
    
           -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
    
           -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. All potentially unsafe characters
                  are hex-escaped (\x<code>).
    
           -r, --raw
                  Use the raw output format. All potentially unsafe characters are
                  hex-escaped (\x<code>) in  NAME,  KNAME,  LABEL,  PARTLABEL  and
                  MOUNTPOINT columns.
    
           -s, --inverse
                  Print dependencies in inverse order.
    
           -t, --topology
                  Output info about block device topology.  This option is equiva-
                  lent    to     "-o     NAME,ALIGNMENT,MIN-IO,OPT-IO,PHY-SEC,LOG-
                  SEC,ROTA,SCHED,RQ-SIZE".
    
           -V, --version
                  Output version information and exit.
    
    
    

    NOTES

           For  partitions,  some information (e.g. queue attributes) is inherited
           from the parent device.
    
           The lsblk needs to be able to lookup sysfs path by  major:minor,  which
           is done done by using /sys/dev/block.  The block sysfs appeared in ker-
           nel 2.6.27 (October 2008).  In case of problem with new  enough  kernel
           check that CONFIG_SYSFS was enabled at the time of kernel build.
    
    
    

    AUTHORS

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

    ENVIRONMENT

           LIBMOUNT_DEBUG=0xffff
                  enables debug output.
    
    
    

    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/.
    
    
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