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 .TH PARTX "8" "June 2012" "util-linux" "System Administration"
   7 .SH NAME
   8 partx \- tell the Linux kernel about the presence and numbering of on-disk partitions
   9 .SH SYNOPSIS
  10 partx [\-a | \-d | \-s | \-u] [\-t TYPE] [\-n M:N] [\-] disk
  11 .br
  12 partx [\-a | \-d | \-s | \-u] [\-t TYPE] partition [disk]
  13 .SH DESCRIPTION
  14 Given a device or disk-image,
  15 .B partx
  16 tries to parse the partition table and list its contents.  It
  17 optionally adds or removes partitions.
  18 .PP
  19 The
  20 .I disk
  21 argument is optional when a
  22 .I partition
  23 argument is provided.  To force scanning a partition as if it were a whole disk
  24 (for example to list nested subpartitions), use the argument "\-" (hyphen-minus).  For example:
  25
  26 .RS 7
  27 .TP
  28 partx \-\-show \- /dev/sda3
  29 .RE
  30 .PP
  31 This will see sda3 as a whole-disk rather than a partition.
  32 .PP
  33 The
  34 .B partx is not an fdisk program
  35 \(en adding and removing partitions does not change the disk, it just
  36 tells the kernel about the presence and numbering of on-disk
  37 partitions.
  38 .SH OPTIONS
  39 .IP "\fB\-a\fR, \fB\-\-add\fP"
  40 Add the specified partitions, or read the disk and add all partitions.
  41 .IP "\fB\-b\fR, \fB\-\-bytes\fP"
  42 Print the SIZE column in bytes rather than in human-readable format.
  43 .IP "\fB\-d\fR, \fB\-\-delete\fP"
  44 Delete the specified partitions or all partitions.
  45 .IP "\fB\-u\fR, \fB\-\-update\fP"
  46 Update the specified partitions.
  47 .IP "\fB\-g\fR, \fB\-\-noheadings\fP"
  48 Do not print a header line.
  49 .IP "\fB\-h\fR, \fB\-\-help\fP"
  50 Display help text and exit.
  51 .IP "\fB\-l\fR, \fB\-\-list\fP"
  52 List the partitions.  Note that all numbers are in 512-byte sectors.
  53 This output format is DEPRECATED in favour of
  54 .BR \-\-show .
  55 Do not use it in newly written scripts.
  56 .IP "\fB\-o\fR, \fB\-\-output \fIlist\fP"
  57 Define the output columns to use for
  58 .B \-\-show
  59 and
  60 .B \-\-raw
  61 output.  If no output arrangement is specified, then a default set is
  62 used.  Use
  63 .B \-\-help
  64 to get
  65 .I list
  66 of all supported columns.  This option cannot be combined with
  67 .BR \-\-add ,
  68 .BR \-\-delete ,
  69 or
  70 .B \-\-list
  71 options.
  72 .IP "\fB\-P\fR, \fB\-\-pairs\fP"
  73 Output using key="value" format.
  74 .IP "\fB\-n\fR, \fB\-\-nr \fIM:N\fP"
  75 Specify the range of partitions.  For backward compatibility also the
  76 format
  77 .I M\(enN
  78 is supported.  The range may contain negative numbers, for example
  79 .BI \-\-nr \ :\-1
  80 means the last partition, and
  81 .BI \-\-nr \ \-2:\-1
  82 means the last two partitions.  Supported range specifications are:
  83 .RS 14
  84 .TP
  85 .I M
  86 Specifies just one partition (e.g.\& \fB\-\-nr\fR
  87 .IR 3 ).
  88 .TP
  89 .I M:
  90 Specifies lower limit only (e.g.\& \fB\-\-nr\fR
  91 .IR 2: ).
  92 .TP
  93 .I :N
  94 Specifies upper limit only (e.g.\& \fB\-\-nr\fR
  95 .IR :4 ).
  96 .TP
  97 .IR M:N \ or
  98 .TQ
  99 .I M\(enN
 100 Specifies lower and upper limits (e.g.\& \fB\-\-nr\fR
 101 .IR 2:4 ).
 102 .RE
 103 .IP "\fB\-r\fR, \fB\-\-raw\fP"
 104 Use the raw output format.
 105 .IP "\fB\-s\fR, \fB\-\-show\fP"
 106 List the partitions.  All numbers (except SIZE) are in 512-byte
 107 sectors.  The output columns can be rearranged with the
 108 .B \-\-output
 109 option.
 110 .IP "\fB\-t\fR, \fB\-\-type \fItype\fP"
 111 Specify the partition table type
 112 .IR aix ,
 113 .IR bsd ,
 114 .IR dos ,
 115 .IR gpt ,
 116 .IR mac ,
 117 .IR minix ,
 118 .IR sgi ,
 119 .IR solaris_x86 ,
 120 .IR sun ,
 121 .IR ultrix ,
 122 or
 123 .IR unixware .
 124 .IP "\fB\-v\fR, \fB\-\-verbose\fP"
 125 Verbose mode.
 126 .SH EXAMPLES
 127 .TP
 128 partx \-\-show /dev/sdb3
 129 .TQ
 130 partx \-\-show \-\-nr 3 /dev/sdb
 131 .TQ
 132 partx \-\-show /dev/sdb3 /dev/sdb
 133 All three commands list partition 3 of /dev/sdb.
 134 .TP
 135 partx \-\-show \- /dev/sdb3
 136 Lists all subpartitions on /dev/sdb3 (the device is used as
 137 whole-disk).
 138 .TP
 139 partx \-o START \-g \-\-nr 5 /dev/sdb
 140 Prints the start sector of partition 5 on /dev/sdb without header.
 141 .TP
 142 partx \-o SECTORS,SIZE /dev/sda5 /dev/sda
 143 Lists the length in sectors and human-readable size of partition 5 on
 144 /dev/sda.
 145 .TP
 146 partx \-\-add \-\-nr 3:5 /dev/sdd
 147 Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
 148 .TP
 149 partx \-d \-\-nr :\-1 /dev/sdd
 150 Removes the last partition on /dev/sdd.
 151 .SH SEE ALSO
 152 .BR addpart (8),
 153 .BR delpart (8),
 154 .BR fdisk (8),
 155 .BR parted (8),
 156 .BR partprobe (8)
 157 .SH AUTHORS
 158 .MT dave@gnu.org
 159 Davidlohr Bueso
 160 .ME
 161 .br
 162 .MT kzak@redhat.com
 163 Karel Zak
 164 .ME
 165 .PP
 166 The original version was written by
 167 .MT aeb@cwi.nl
 168 Andries E.\& Brouwer
 169 .ME .
 170 .SH ENVIRONMENT
 171 .IP LIBBLKID_DEBUG=all
 172 enables libblkid debug output.
 173 .SH AVAILABILITY
 174 The partx command is part of the util-linux package and is available from
 175 .UR ftp://\:ftp.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 176 Linux Kernel Archive
 177 .UE .