disk-utils/partx.8

   1 .\" partx.8 -- man page for partx
   2 .\" Copyright 2007 Karel Zak <kzak@redhat.com>
   3 .\" Copyright 2007 Red Hat, Inc.
   4 .\" Copyright 2010 Davidlohr Bueso <dave@gnu.org>
   5 .\" May be distributed under the GNU General Public License
   6 .\"
   7 .TH PARTX "8" "December 2014" "util-linux" "System Administration"
   8 .SH NAME
   9 partx \- tell the kernel about the presence and numbering of on-disk partitions
  10 .SH SYNOPSIS
  11 .B partx
  12 .RB [ \-a | \-d | \-P | \-r | \-s | \-u ]
  13 .RB [ \-t " \fItype\fR]"
  14 .RB [ \-n " \fIM" : \fIN\fR]
  15 .RB [ \- "] " \fIdisk
  16 .br
  17 .B partx
  18 .RB [ \-a | \-d | \-P | \-r | \-s | \-u ]
  19 .RB [ \-t " \fItype\fR]"
  20 .IR partition " [" disk ]
  21 .SH DESCRIPTION
  22 Given a device or disk-image,
  23 .B partx
  24 tries to parse the partition table and list its contents.  It
  25 can also tell the kernel to add or remove partitions from its
  26 bookkeeping.
  27 .PP
  28 The
  29 .I disk
  30 argument is optional when a
  31 .I partition
  32 argument is provided.  To force scanning a partition as if it were a whole disk
  33 (for example to list nested subpartitions), use the argument "\-" (hyphen-minus).
  34 For example:
  35
  36 .RS 7
  37 .TP
  38 partx \-\-show \- /dev/sda3
  39 .RE
  40 .PP
  41 This will see sda3 as a whole-disk rather than as a partition.
  42 .PP
  43 .B partx is not an fdisk program
  44 \(en adding and removing partitions does not change the disk, it just
  45 tells the kernel about the presence and numbering of on-disk
  46 partitions.
  47 .SH OPTIONS
  48 .TP
  49 .BR \-a , " \-\-add"
  50 Add the specified partitions, or read the disk and add all partitions.
  51 .TP
  52 .BR \-b , " \-\-bytes"
  53 Print the SIZE column in bytes rather than in human-readable format.
  54 .TP
  55 .BR \-d , " \-\-delete"
  56 Delete the specified partitions or all partitions.  It is not error to
  57 remove non-existing partitions, so this option is possible to use together with
  58 large \fB\-\-nr\fR ranges without care about the current partitions set on
  59 the device.
  60 .TP
  61 .BR \-g , " \-\-noheadings"
  62 Do not print a header line with \fB\-\-show\fR or \fB\-\-raw\fR.
  63 .TP
  64 .BR \-l , " \-\-list"
  65 List the partitions.  Note that all numbers are in 512-byte sectors.
  66 This output format is DEPRECATED in favour of
  67 .BR \-\-show .
  68 Do not use it in newly written scripts.
  69 .TP
  70 .BR \-n , " \-\-nr " \fIM : \fIN
  71 Specify the range of partitions.  For backward compatibility also the
  72 format \fIM\fB\-\fIN\fR is supported.
  73 The range may contain negative numbers, for example
  74 .B \-\-nr \-1:\-1
  75 means the last partition, and
  76 .B \-\-nr \-2:\-1
  77 means the last two partitions.  Supported range specifications are:
  78 .RS 14
  79 .TP
  80 .I M
  81 Specifies just one partition (e.g.\& \fB\-\-nr 3\fR).
  82 .TP
  83 .IB M :
  84 Specifies the lower limit only (e.g.\& \fB\-\-nr 2:\fR).
  85 .TP
  86 .BI : N
  87 Specifies the upper limit only (e.g.\& \fB\-\-nr :4\fR).
  88 .TP
  89 .IB M : N
  90 Specifies the lower and upper limits (e.g.\& \fB\-\-nr 2:4\fR).
  91 .RE
  92 .TP
  93 .BR \-o , " \-\-output " \fIlist
  94 Define the output columns to use for
  95 .BR \-\-show ,
  96 .B \-\-pairs
  97 and
  98 .B \-\-raw
  99 output.  If no output arrangement is specified, then a default set is
 100 used.  Use
 101 .B \-\-help
 102 to get
 103 .I list
 104 of all supported columns.  This option cannot be combined with the
 105 .BR \-\-add ,
 106 .BR \-\-delete ,
 107 .B \-\-update
 108 or
 109 .B \-\-list
 110 options.
 111 .TP
 112 .B \-\-output\-all
 113 Output all available columns.
 114 .TP
 115 .BR \-P , " \-\-pairs"
 116 List the partitions using the KEY="value" format.
 117 .TP
 118 .BR \-r , " \-\-raw"
 119 List the partitions using the raw output format.
 120 .TP
 121 .BR \-s , " \-\-show"
 122 List the partitions.
 123 The output columns can be selected and rearranged with the
 124 \fB\-\-output\fR option.
 125 All numbers (except SIZE) are in 512-byte sectors.
 126 .TP
 127 .BR \-t , " \-\-type " \fItype
 128 Specify the partition table type.
 129 .TP
 130 .B \-\-list\-types
 131 List supported partition types and exit.
 132 .TP
 133 .BR \-u , " \-\-update"
 134 Update the specified partitions.
 135 .TP
 136 .BR \-S , " \-\-sector\-size " \fIsize
 137 Overwrite default sector size.
 138 .TP
 139 .BR \-v , " \-\-verbose"
 140 Verbose mode.
 141 .TP
 142 .BR \-V , " \-\-version"
 143 Display version information and exit.
 144 .TP
 145 .BR \-h , " \-\-help"
 146 Display help text and exit.
 147 .SH EXAMPLE
 148 .TP
 149 partx \-\-show /dev/sdb3
 150 .TQ
 151 partx \-\-show \-\-nr 3 /dev/sdb
 152 .TQ
 153 partx \-\-show /dev/sdb3 /dev/sdb
 154 All three commands list partition 3 of /dev/sdb.
 155 .TP
 156 partx \-\-show \- /dev/sdb3
 157 Lists all subpartitions on /dev/sdb3 (the device is used as
 158 whole-disk).
 159 .TP
 160 partx \-o START \-g \-\-nr 5 /dev/sdb
 161 Prints the start sector of partition 5 on /dev/sdb without header.
 162 .TP
 163 partx \-o SECTORS,SIZE /dev/sda5 /dev/sda
 164 Lists the length in sectors and human-readable size of partition 5 on
 165 /dev/sda.
 166 .TP
 167 partx \-\-add \-\-nr 3:5 /dev/sdd
 168 Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
 169 .TP
 170 partx \-d \-\-nr :\-1 /dev/sdd
 171 Removes the last partition on /dev/sdd.
 172 .SH SEE ALSO
 173 .BR addpart (8),
 174 .BR delpart (8),
 175 .BR fdisk (8),
 176 .BR parted (8),
 177 .BR partprobe (8)
 178 .SH AUTHORS
 179 .MT dave@gnu.org
 180 Davidlohr Bueso
 181 .ME
 182 .br
 183 .MT kzak@redhat.com
 184 Karel Zak
 185 .ME
 186 .PP
 187 The original version was written by
 188 .MT aeb@cwi.nl
 189 Andries E.\& Brouwer
 190 .ME .
 191 .SH ENVIRONMENT
 192 .IP LIBBLKID_DEBUG=all
 193 enables libblkid debug output.
 194 .SH AVAILABILITY
 195 The partx command is part of the util-linux package and is available from
 196 .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 197 Linux Kernel Archive
 198 .UE .