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authorBenno Schulenberg2014-12-24 17:56:01 +0100
committerKarel Zak2015-01-06 11:38:29 +0100
commit92f1c5ab8d09364682c9c1a39f80a191ff84d0b8 (patch)
tree616be37b1d277a6fa28b11c74ae32618dc3695b4 /misc-utils/wipefs.8
parenttextual: add a docstring to most of the utilities (diff)
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docs: improve some wordings on the man page of wipefs
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
Diffstat (limited to 'misc-utils/wipefs.8')
-rw-r--r--misc-utils/wipefs.833
1 files changed, 17 insertions, 16 deletions
diff --git a/misc-utils/wipefs.8 b/misc-utils/wipefs.8
index 13cadb456..c4addef83 100644
--- a/misc-utils/wipefs.8
+++ b/misc-utils/wipefs.8
@@ -2,7 +2,7 @@
.\" Copyright 2009 by Karel Zak. All Rights Reserved.
.\" This file may be copied under the terms of the GNU Public License.
.\"
-.TH WIPEFS 8 "October 2009" "util-linux" "System Administration"
+.TH WIPEFS 8 "December 2014" "util-linux" "System Administration"
.SH NAME
wipefs \- wipe a signature from a device
.SH SYNOPSIS
@@ -20,41 +20,42 @@ to make the signatures invisible for libblkid.
.B wipefs
does not erase the filesystem itself nor any other data from the device.
-When used without options \fB-a\fR or \fB-o\fR, it lists all visible filesystems
+When used without any options, \fBwipefs\fR lists all visible filesystems
and the offsets of their basic signatures.
.B wipefs
-calls BLKRRPART ioctl when erase partition table to inform kernel about the change.
+calls the BLKRRPART ioctl when it has erased a partition-table signature
+to inform the kernel about the change.
-Note that some filesystems or some partition tables store more magic strings on
-the devices. The
+Note that some filesystems and some partition tables store more magic strings on
+the device. The
.B wipefs
command lists only the first offset where a magic string has been detected. The device
is not scanned for additional magic strings for the same filesystem. It is possible
-that after \fBwipefs -o \fIoffset\fR the same filesystem or partition
-table will still be visible by another magic string on another offset.
+that after a \fBwipefs -o \fIoffset\fR the same filesystem or partition
+table will still be visible because of another magic string on another offset.
-When used with option \fB-a\fR, all magic strings that are visible for libblkid are
+When option \fB-a\fR is used, all magic strings that are visible for libblkid are
erased.
Note that by default
.B wipefs
-does not erase nested partition tables on non-whole disk devices. The option
-\-\-force is required.
+does not erase nested partition tables on non-whole disk devices.
+For this the option \fB\-\-force\fR is required.
.SH OPTIONS
.TP
.BR \-a , " \-\-all"
Erase all available signatures. The set of erased signatures can be
-restricted with the \fB\-t\fP \fIlist\fP option.
+restricted with the \fB\-t\fR option.
.TP
.BR \-b , " \-\-backup"
Create a signature backup to the file $HOME/wipefs-<devname>-<offset>.bak.
-For more details see EXAMPLES section.
+For more details see the \fBEXAMPLES\fR section.
.TP
.BR \-f , " \-\-force"
Force erasure, even if the filesystem is mounted. This is required in
-order to erase the partition table on a block device.
+order to erase a partition-table signature on a block device.
.TP
.BR \-h , " \-\-help"
Display help text and exit.
@@ -66,7 +67,7 @@ Causes everything to be done except for the write() call.
Specify the location (in bytes) of the signature which should be erased from the
device. The \fIoffset\fR number may include a "0x" prefix; then the number will be
interpreted as a hex value. It is possible to specify multiple \fB-o\fR options.
-
+.sp
The \fIoffset\fR argument may be followed by the multiplicative
suffixes KiB (=1024), MiB (=1024*1024), and so on for GiB, TiB, PiB, EiB, ZiB and YiB
(the "iB" is optional, e.g. "K" has the same meaning as "KiB"), or the suffixes
@@ -77,7 +78,7 @@ Print out in parsable instead of printable format. Encode all potentially unsaf
characters of a string to the corresponding hex value prefixed by '\\x'.
.TP
.BR \-q , " \-\-quiet"
-Suppress output messages after successful signature wipe.
+Suppress any messages after a successful signature wipe.
.TP
.BR \-t , " \-\-types " \fIlist\fP
Limit the set of printed or erased signatures. More than one type may
@@ -94,7 +95,7 @@ Erases all signatures from the device /dev/sdb and creates a signature backup
file ~/wipefs-sdb-<offset>.bak for each signature.
.TP
.BR "dd if=~/wipefs-sdb-0x00000438.bak of=/dev/sdb seek=$((0x00000438)) bs=1 conv=notrunc"
-Restores ext2 signature from the backup file ~/wipefs-sdb-0x00000438.bak.
+Restores an ext2 signature from the backup file ~/wipefs-sdb-0x00000438.bak.
.SH AUTHOR
Karel Zak <kzak@redhat.com>
.SH ENVIRONMENT