PARTX(8)						       System Administration							  PARTX(8)

NAME

       partx - tell the Linux kernel about the presence and numbering of on-disk partitions

SYNOPSIS

       partx [-a|-d|-s|-u] [-t TYPE] [-n M:N] [-] disk
       partx [-a|-d|-s|-u] [-t TYPE] partition [disk]

DESCRIPTION

       Given a device or disk-image, partx tries to parse the partition table and list its contents.  It optionally adds or removes partitions.

       The disk argument is optional when a partition argument is provided.  To force scanning a partition as if it were a whole disk (for example
       to list nested subpartitions), use the argument "-".  For example:

	      partx --show - /dev/sda3

       This will see sda3 as a whole-disk rather than a partition.

       The partx is not an fdisk program -- adding and removing partitions does not change the disk, it just tells the kernel about  the  presence
       and numbering of on-disk partitions.

OPTIONS

       -a, --add
	      Add the specified partitions, or read the disk and add all partitions.

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

       -d, --delete
	      Delete the specified partitions or all partitions.

       -u, --update
	      Update the specified partitions.

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

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

       -l, --list
	      List  the partitions.  Note that all numbers are in 512-byte sectors.  This output format is DEPRECATED in favour of --show.  Do not
	      use it in newly written scripts.

       -o, --output list
	      Define the output columns to use for --show and --raw output.  If no output arrangement is specified, then a default  set  is  used.
	      Use --help to get list of all supported columns.	This option cannot be combined with --add, --delete or --list options.

       -P, --pairs
	      Output using key="value" format.

       -n, --nr M:N
	      Specify  the range of partitions.  For backward compatibility also the format M-N is supported.  The range may contain negative num-
	      bers, for example --nr :-1 means the last partition, and --nr -2:-1 means the last two partitions.  Supported  range  specifications
	      are:

		     M	    Specifies just one partition (e.g. --nr 3).

		     M:     Specifies lower limit only (e.g. --nr 2:).

		     :N     Specifies upper limit only (e.g. --nr :4).

		     M:N or
		     M-N    Specifies lower and upper limits (e.g. --nr 2:4).

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

       -s, --show
	      List  the  partitions.   All  numbers (except SIZE) are in 512-byte sectors.  The output columns can be rearranged with the --output
	      option.

       -t, --type type
	      Specify the partition table type aix, bsd, dos, gpt, mac, minix, sgi, solaris_x86, sun, ultrix or unixware.

       -v, --verbose
	      Verbose mode.

EXAMPLES

       partx --show /dev/sdb3
       partx --show --nr 3 /dev/sdb
       partx --show /dev/sdb3 /dev/sdb
	      All three commands list partition 3 of /dev/sdb.

       partx --show - /dev/sdb3
	      Lists all subpartitions on /dev/sdb3 (the device is used as whole-disk).

       partx -o START -g --nr 5 /dev/sdb
	      Prints the start sector of partition 5 on /dev/sdb without header.

       partx -o SECTORS,SIZE /dev/sda5 /dev/sda
	      Lists the length in sectors and human-readable size of partition 5 on /dev/sda.

       partx --add --nr 3:5 /dev/sdd
	      Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.

       partx -d --nr :-1 /dev/sdd
	      Removes the last partition on /dev/sdd.

SEE ALSO

       addpart(8), delpart(8), fdisk(8), parted(8), partprobe(8)

AUTHORS

       Davidlohr Bueso <dave@gnu.org>
       Karel Zak <kzak@redhat.com>

       The original version was written by Andries E. Brouwer <aeb@cwi.nl>.

ENVIRONMENT

       LIBBLKID_DEBUG=0xffff
	      enables debug output.

AVAILABILITY

       The partx command is part of the util-linux package and is available from Linux Kernel Archive  <ftp://ftp.kernel.org/pub/linux/utils/util-
       linux/>.

util-linux							     June 2012								  PARTX(8)