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
   9 on-disk partitions
  10 .SH SYNOPSIS
  11 partx [\-a | \-d | \-s | \-u] [\-t TYPE] [\-n M:N] [\-] disk
  12 .br
  13 partx [\-a | \-d | \-s | \-u] [\-t TYPE] partition [disk]
  14 .SH DESCRIPTION
  15 Given a device or disk-image,
  16 .B partx
  17 tries to parse the partition table and list its contents.  It
  18 optionally adds or removes partitions.
  19 .PP
  20 The
  21 .I disk
  22 argument is optional when a
  23 .I partition
  24 argument is provided.  To force scanning a partition as if it were a whole disk
  25 (for example to list nested subpartitions), use the argument "\-" (hyphen-minus).  For example:
  26
  27 .RS 7
  28 .TP
  29 partx \-\-show \- /dev/sda3
  30 .RE
  31 .PP
  32 This will see sda3 as a whole-disk rather than a partition.
  33 .PP
  34 The
  35 .B partx is not an fdisk program
  36 \(en adding and removing partitions does not change the disk, it just
  37 tells the kernel about the presence and numbering of on-disk
  38 partitions.
  39 .SH OPTIONS
  40 .IP "\fB\-a\fR, \fB\-\-add\fP"
  41 Add the specified partitions, or read the disk and add all partitions.
  42 .IP "\fB\-b\fR, \fB\-\-bytes\fP"
  43 Print the SIZE column in bytes rather than in human-readable format.
  44 .IP "\fB\-d\fR, \fB\-\-delete\fP"
  45 Delete the specified partitions or all partitions.
  46 .IP "\fB\-u\fR, \fB\-\-update\fP"
  47 Update the specified partitions.
  48 .IP "\fB\-g\fR, \fB\-\-noheadings\fP"
  49 Do not print a header line.
  50 .IP "\fB\-h\fR, \fB\-\-help\fP"
  51 Display help text and exit.
  52 .IP "\fB\-l\fR, \fB\-\-list\fP"
  53 List the partitions.  Note that all numbers are in 512-byte sectors.
  54 This output format is DEPRECATED in favour of
  55 .BR \-\-show .
  56 Do not use it in newly written scripts.
  57 .IP "\fB\-o\fR, \fB\-\-output \fIlist\fP"
  58 Define the output columns to use for
  59 .B \-\-show
  60 and
  61 .B \-\-raw
  62 output.  If no output arrangement is specified, then a default set is
  63 used.  Use
  64 .B \-\-help
  65 to get
  66 .I list
  67 of all supported columns.  This option cannot be combined with
  68 .BR \-\-add ,
  69 .BR \-\-delete ,
  70 or
  71 .B \-\-list
  72 options.
  73 .IP "\fB\-P\fR, \fB\-\-pairs\fP"
  74 Output using key="value" format.
  75 .IP "\fB\-n\fR, \fB\-\-nr \fIM:N\fP"
  76 Specify the range of partitions.  For backward compatibility also the
  77 format
  78 .I M\(enN
  79 is supported.  The range may contain negative numbers, for example
  80 .BI \-\-nr \ :\-1
  81 means the last partition, and
  82 .BI \-\-nr \ \-2:\-1
  83 means the last two partitions.  Supported range specifications are:
  84 .RS 14
  85 .TP
  86 .I M
  87 Specifies just one partition (e.g.\& \fB\-\-nr\fR
  88 .IR 3 ).
  89 .TP
  90 .I M:
  91 Specifies lower limit only (e.g.\& \fB\-\-nr\fR
  92 .IR 2: ).
  93 .TP
  94 .I :N
  95 Specifies upper limit only (e.g.\& \fB\-\-nr\fR
  96 .IR :4 ).
  97 .TP
  98 .IR M:N \ or
  99 .TQ
 100 .I M\(enN
 101 Specifies lower and upper limits (e.g.\& \fB\-\-nr\fR
 102 .IR 2:4 ).
 103 .RE
 104 .IP "\fB\-r\fR, \fB\-\-raw\fP"
 105 Use the raw output format.
 106 .IP "\fB\-s\fR, \fB\-\-show\fP"
 107 List the partitions.  All numbers (except SIZE) are in 512-byte
 108 sectors.  The output columns can be rearranged with the
 109 .B \-\-output
 110 option.
 111 .IP "\fB\-t\fR, \fB\-\-type \fItype\fP"
 112 Specify the partition table type
 113 .IR aix ,
 114 .IR bsd ,
 115 .IR dos ,
 116 .IR gpt ,
 117 .IR mac ,
 118 .IR minix ,
 119 .IR sgi ,
 120 .IR solaris_x86 ,
 121 .IR sun ,
 122 .IR ultrix ,
 123 or
 124 .IR unixware .
 125 .IP "\fB\-v\fR, \fB\-\-verbose\fP"
 126 Verbose mode.
 127 .SH EXAMPLES
 128 .TP
 129 partx \-\-show /dev/sdb3
 130 .TQ
 131 partx \-\-show \-\-nr 3 /dev/sdb
 132 .TQ
 133 partx \-\-show /dev/sdb3 /dev/sdb
 134 All three commands list partition 3 of /dev/sdb.
 135 .TP
 136 partx \-\-show \- /dev/sdb3
 137 Lists all subpartitions on /dev/sdb3 (the device is used as
 138 whole-disk).
 139 .TP
 140 partx \-o START \-g \-\-nr 5 /dev/sdb
 141 Prints the start sector of partition 5 on /dev/sdb without header.
 142 .TP
 143 partx \-o SECTORS,SIZE /dev/sda5 /dev/sda
 144 Lists the length in sectors and human-readable size of partition 5 on
 145 /dev/sda.
 146 .TP
 147 partx \-\-add \-\-nr 3:5 /dev/sdd
 148 Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.
 149 .TP
 150 partx \-d \-\-nr :\-1 /dev/sdd
 151 Removes the last partition on /dev/sdd.
 152 .SH SEE ALSO
 153 .BR addpart (8),
 154 .BR delpart (8),
 155 .BR fdisk (8),
 156 .BR parted (8),
 157 .BR partprobe (8)
 158 .SH AUTHORS
 159 .MT dave@gnu.org
 160 Davidlohr Bueso
 161 .ME
 162 .br
 163 .MT kzak@redhat.com
 164 Karel Zak
 165 .ME
 166 .PP
 167 The original version was written by
 168 .MT aeb@cwi.nl
 169 Andries E.\& Brouwer
 170 .ME .
 171 .SH ENVIRONMENT
 172 .IP LIBBLKID_DEBUG=0xffff
 173 enables debug output.
 174 .SH AVAILABILITY
 175 The partx command is part of the util-linux package and is available from
 176 .UR ftp://\:ftp.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 177 Linux Kernel Archive
 178 .UE .