disk-utils/partx.8

   1 .\" partx.8 --
   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 Linux kernel about the presence and numbering of on-disk partitions
  10 .SH SYNOPSIS
  11 .B partx
  12 .RB [ \-a | \-d | \-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 | \-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 optionally adds or removes partitions.
  26 .PP
  27 The
  28 .I disk
  29 argument is optional when a
  30 .I partition
  31 argument is provided.  To force scanning a partition as if it were a whole disk
  32 (for example to list nested subpartitions), use the argument "\-" (hyphen-minus).  For example:
  33
  34 .RS 7
  35 .TP
  36 partx \-\-show \- /dev/sda3
  37 .RE
  38 .PP
  39 This will see sda3 as a whole-disk rather than a partition.
  40 .PP
  41 The
  42 .B partx is not an fdisk program
  43 \(en adding and removing partitions does not change the disk, it just
  44 tells the kernel about the presence and numbering of on-disk
  45 partitions.
  46 .SH OPTIONS
  47 .TP
  48 .BR \-a , " \-\-add"
  49 Add the specified partitions, or read the disk and add all partitions.
  50 .TP
  51 .BR \-b , " \-\-bytes"
  52 Print the SIZE column in bytes rather than in human-readable format.
  53 .TP
  54 .BR \-d , " \-\-delete"
  55 Delete the specified partitions or all partitions.
  56 .TP
  57 .BR \-g , " \-\-noheadings"
  58 Do not print a header line.
  59 .TP
  60 .BR \-l , " \-\-list"
  61 List the partitions.  Note that all numbers are in 512-byte sectors.
  62 This output format is DEPRECATED in favour of
  63 .BR \-\-show .
  64 Do not use it in newly written scripts.
  65 .TP
  66 .BR \-n , " \-\-nr " \fIM : \fIN
  67 Specify the range of partitions.  For backward compatibility also the
  68 format \fIM\fB\-\fIN\fR is supported.
  69 The range may contain negative numbers, for example
  70 .B \-\-nr :\-1
  71 means the last partition, and
  72 .B \-\-nr \-2:\-1
  73 means the last two partitions.  Supported range specifications are:
  74 .RS 14
  75 .TP
  76 .I M
  77 Specifies just one partition (e.g.\& \fB\-\-nr 3\fR).
  78 .TP
  79 .IB M :
  80 Specifies the lower limit only (e.g.\& \fB\-\-nr 2:\fR).
  81 .TP
  82 .BI : N
  83 Specifies the upper limit only (e.g.\& \fB\-\-nr :4\fR).
  84 .TP
  85 .IB M : N
  86 Specifies the lower and upper limits (e.g.\& \fB\-\-nr 2:4\fR).
  87 .RE
  88 .TP
  89 .BR \-o , " \-\-output " \fIlist
  90 Define the output columns to use for
  91 .B \-\-show
  92 and
  93 .B \-\-raw
  94 output.  If no output arrangement is specified, then a default set is
  95 used.  Use
  96 .B \-\-help
  97 to get
  98 .I list
  99 of all supported columns.  This option cannot be combined with the
 100 .BR \-\-add ,
 101 .BR \-\-delete ,
 102 or
 103 .B \-\-list
 104 options.
 105 .TP
 106 .BR \-P , " \-\-pairs"
 107 Output using key="value" format.
 108 .TP
 109 .BR \-r , " \-\-raw"
 110 Use the raw output format.
 111 .TP
 112 .BR \-s , "\-\-show"
 113 List the partitions.  All numbers (except SIZE) are in 512-byte sectors.
 114 The output columns can be rearranged with the \fB\-\-output\fR option.
 115 .TP
 116 .BR \-t , " \-\-type " \fItype
 117 Specify the partition table type, which can be one of
 118 .BR aix ,
 119 .BR bsd ,
 120 .BR dos ,
 121 .BR gpt ,
 122 .BR mac ,
 123 .BR minix ,
 124 .BR sgi ,
 125 .BR solaris_x86 ,
 126 .BR sun ,
 127 .BR ultrix ,
 128 or
 129 .BR unixware .
 130 .TP
 131 .BR \-u , " \-\-update"
 132 Update the specified partitions.
 133 .TP
 134 .BR \-v , " \-\-verbose"
 135 Verbose mode.
 136 .TP
 137 .BR \-V , " \-\-version"
 138 Display version information and exit.
 139 .TP
 140 .BR \-h , " \-\-help"
 141 Display help text and exit.
 142 .SH EXAMPLES
 143 .TP
 144 partx \-\-show /dev/sdb3
 145 .TQ
 146 partx \-\-show \-\-nr 3 /dev/sdb
 147 .TQ
 148 partx \-\-show /dev/sdb3 /dev/sdb
 149 All three commands list partition 3 of /dev/sdb.
 150 .TP
 151 partx \-\-show \- /dev/sdb3
 152 Lists all subpartitions on /dev/sdb3 (the device is used as
 153 whole-disk).
 154 .TP
 155 partx \-o START \-g \-\-nr 5 /dev/sdb
 156 Prints the start sector of partition 5 on /dev/sdb without header.
 157 .TP
 158 partx \-o SECTORS,SIZE /dev/sda5 /dev/sda
 159 Lists the length in sectors and human-readable size of partition 5 on
 160 /dev/sda.
 161 .TP
 162 partx \-\-add \-\-nr 3:5 /dev/sdd
 163 Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
 164 .TP
 165 partx \-d \-\-nr :\-1 /dev/sdd
 166 Removes the last partition on /dev/sdd.
 167 .SH SEE ALSO
 168 .BR addpart (8),
 169 .BR delpart (8),
 170 .BR fdisk (8),
 171 .BR parted (8),
 172 .BR partprobe (8)
 173 .SH AUTHORS
 174 .MT dave@gnu.org
 175 Davidlohr Bueso
 176 .ME
 177 .br
 178 .MT kzak@redhat.com
 179 Karel Zak
 180 .ME
 181 .PP
 182 The original version was written by
 183 .MT aeb@cwi.nl
 184 Andries E.\& Brouwer
 185 .ME .
 186 .SH ENVIRONMENT
 187 .IP LIBBLKID_DEBUG=all
 188 enables libblkid debug output.
 189 .SH AVAILABILITY
 190 The partx command is part of the util-linux package and is available from
 191 .UR ftp://\:ftp.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 192 Linux Kernel Archive
 193 .UE .