partx man page on Oracle

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PARTX(8)		     System Administration		      PARTX(8)

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

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

       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.

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

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

       -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 sec‐
	      tors.  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

       -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	 nega‐
	      tive numbers, for example --nr :-1 means the last partition, and
	      --nr -2:-1 means the last two partitions.	 Supported range spec‐
	      ifications 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

       -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.

       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

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

       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

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

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

       Davidlohr Bueso ⟨⟩
       Karel Zak ⟨⟩

       The original version was written by Andries E. Brouwer ⟨⟩.

	      enables debug output.

       The partx command is part of the util-linux package  and	 is  available
       from  Linux  Kernel Archive ⟨

util-linux			   June 2012			      PARTX(8)

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