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 .BR \-\-update
 105 or
 106 .B \-\-list
 107 options.
 108 .TP
 109 .BR \-P , " \-\-pairs"
 110 List the partitions using the KEY="value" format.
 111 .TP
 112 .BR \-r , " \-\-raw"
 113 List the partitions using the raw output format.
 114 .TP
 115 .BR \-s , " \-\-show"
 116 List the partitions.
 117 The output columns can be selected and rearranged with the
 118 \fB\-\-output\fR option.
 119 All numbers (except SIZE) are in 512-byte sectors.
 120 .TP
 121 .BR \-t , " \-\-type " \fItype
 122 Specify the partition table type, which can be one of
 123 .BR aix ,
 124 .BR bsd ,
 125 .BR dos ,
 126 .BR gpt ,
 127 .BR mac ,
 128 .BR minix ,
 129 .BR PMBR ,
 130 .BR sgi ,
 131 .BR solaris ,
 132 .BR sun ,
 133 .BR ultrix ,
 134 or
 135 .BR unixware .
 136 .TP
 137 .BR \-u , " \-\-update"
 138 Update the specified partitions.
 139 .TP
 140 .BR \-S , " \-\-sector\-size " \fIsize
 141 Overwrite default sector size.
 142 .TP
 143 .BR \-v , " \-\-verbose"
 144 Verbose mode.
 145 .TP
 146 .BR \-V , " \-\-version"
 147 Display version information and exit.
 148 .TP
 149 .BR \-h , " \-\-help"
 150 Display help text and exit.
 151 .SH EXAMPLES
 152 .TP
 153 partx \-\-show /dev/sdb3
 154 .TQ
 155 partx \-\-show \-\-nr 3 /dev/sdb
 156 .TQ
 157 partx \-\-show /dev/sdb3 /dev/sdb
 158 All three commands list partition 3 of /dev/sdb.
 159 .TP
 160 partx \-\-show \- /dev/sdb3
 161 Lists all subpartitions on /dev/sdb3 (the device is used as
 162 whole-disk).
 163 .TP
 164 partx \-o START \-g \-\-nr 5 /dev/sdb
 165 Prints the start sector of partition 5 on /dev/sdb without header.
 166 .TP
 167 partx \-o SECTORS,SIZE /dev/sda5 /dev/sda
 168 Lists the length in sectors and human-readable size of partition 5 on
 169 /dev/sda.
 170 .TP
 171 partx \-\-add \-\-nr 3:5 /dev/sdd
 172 Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
 173 .TP
 174 partx \-d \-\-nr :\-1 /dev/sdd
 175 Removes the last partition on /dev/sdd.
 176 .SH SEE ALSO
 177 .BR addpart (8),
 178 .BR delpart (8),
 179 .BR fdisk (8),
 180 .BR parted (8),
 181 .BR partprobe (8)
 182 .SH AUTHORS
 183 .MT dave@gnu.org
 184 Davidlohr Bueso
 185 .ME
 186 .br
 187 .MT kzak@redhat.com
 188 Karel Zak
 189 .ME
 190 .PP
 191 The original version was written by
 192 .MT aeb@cwi.nl
 193 Andries E.\& Brouwer
 194 .ME .
 195 .SH ENVIRONMENT
 196 .IP LIBBLKID_DEBUG=all
 197 enables libblkid debug output.
 198 .SH AVAILABILITY
 199 The partx command is part of the util-linux package and is available from
 200 .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 201 Linux Kernel Archive
 202 .UE .