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.
  57 .TP
  58 .BR \-g , " \-\-noheadings"
  59 Do not print a header line with \fB\-\-show\fR or \fB\-\-raw\fR.
  60 .TP
  61 .BR \-l , " \-\-list"
  62 List the partitions.  Note that all numbers are in 512-byte sectors.
  63 This output format is DEPRECATED in favour of
  64 .BR \-\-show .
  65 Do not use it in newly written scripts.
  66 .TP
  67 .BR \-n , " \-\-nr " \fIM : \fIN
  68 Specify the range of partitions.  For backward compatibility also the
  69 format \fIM\fB\-\fIN\fR is supported.
  70 The range may contain negative numbers, for example
  71 .B \-\-nr \-1:\-1
  72 means the last partition, and
  73 .B \-\-nr \-2:\-1
  74 means the last two partitions.  Supported range specifications are:
  75 .RS 14
  76 .TP
  77 .I M
  78 Specifies just one partition (e.g.\& \fB\-\-nr 3\fR).
  79 .TP
  80 .IB M :
  81 Specifies the lower limit only (e.g.\& \fB\-\-nr 2:\fR).
  82 .TP
  83 .BI : N
  84 Specifies the upper limit only (e.g.\& \fB\-\-nr :4\fR).
  85 .TP
  86 .IB M : N
  87 Specifies the lower and upper limits (e.g.\& \fB\-\-nr 2:4\fR).
  88 .RE
  89 .TP
  90 .BR \-o , " \-\-output " \fIlist
  91 Define the output columns to use for
  92 .BR \-\-show ,
  93 .B \-\-pairs
  94 and
  95 .B \-\-raw
  96 output.  If no output arrangement is specified, then a default set is
  97 used.  Use
  98 .B \-\-help
  99 to get
 100 .I list
 101 of all supported columns.  This option cannot be combined with the
 102 .BR \-\-add ,
 103 .BR \-\-delete ,
 104 .B \-\-update
 105 or
 106 .B \-\-list
 107 options.
 108 .TP
 109 .B \-\-output\-all
 110 Output all available columns.
 111 .TP
 112 .BR \-P , " \-\-pairs"
 113 List the partitions using the KEY="value" format.
 114 .TP
 115 .BR \-r , " \-\-raw"
 116 List the partitions using the raw output format.
 117 .TP
 118 .BR \-s , " \-\-show"
 119 List the partitions.
 120 The output columns can be selected and rearranged with the
 121 \fB\-\-output\fR option.
 122 All numbers (except SIZE) are in 512-byte sectors.
 123 .TP
 124 .BR \-t , " \-\-type " \fItype
 125 Specify the partition table type.
 126 .TP
 127 .B \-\-list\-types
 128 List supported partition types and exit.
 129 .TP
 130 .BR \-u , " \-\-update"
 131 Update the specified partitions.
 132 .TP
 133 .BR \-S , " \-\-sector\-size " \fIsize
 134 Overwrite default sector size.
 135 .TP
 136 .BR \-v , " \-\-verbose"
 137 Verbose mode.
 138 .TP
 139 .BR \-V , " \-\-version"
 140 Display version information and exit.
 141 .TP
 142 .BR \-h , " \-\-help"
 143 Display help text and exit.
 144 .SH EXAMPLES
 145 .TP
 146 partx \-\-show /dev/sdb3
 147 .TQ
 148 partx \-\-show \-\-nr 3 /dev/sdb
 149 .TQ
 150 partx \-\-show /dev/sdb3 /dev/sdb
 151 All three commands list partition 3 of /dev/sdb.
 152 .TP
 153 partx \-\-show \- /dev/sdb3
 154 Lists all subpartitions on /dev/sdb3 (the device is used as
 155 whole-disk).
 156 .TP
 157 partx \-o START \-g \-\-nr 5 /dev/sdb
 158 Prints the start sector of partition 5 on /dev/sdb without header.
 159 .TP
 160 partx \-o SECTORS,SIZE /dev/sda5 /dev/sda
 161 Lists the length in sectors and human-readable size of partition 5 on
 162 /dev/sda.
 163 .TP
 164 partx \-\-add \-\-nr 3:5 /dev/sdd
 165 Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
 166 .TP
 167 partx \-d \-\-nr :\-1 /dev/sdd
 168 Removes the last partition on /dev/sdd.
 169 .SH SEE ALSO
 170 .BR addpart (8),
 171 .BR delpart (8),
 172 .BR fdisk (8),
 173 .BR parted (8),
 174 .BR partprobe (8)
 175 .SH AUTHORS
 176 .MT dave@gnu.org
 177 Davidlohr Bueso
 178 .ME
 179 .br
 180 .MT kzak@redhat.com
 181 Karel Zak
 182 .ME
 183 .PP
 184 The original version was written by
 185 .MT aeb@cwi.nl
 186 Andries E.\& Brouwer
 187 .ME .
 188 .SH ENVIRONMENT
 189 .IP LIBBLKID_DEBUG=all
 190 enables libblkid debug output.
 191 .SH AVAILABILITY
 192 The partx command is part of the util-linux package and is available from
 193 .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 194 Linux Kernel Archive
 195 .UE .