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.\" Copyright (c) 2014 Jean-Pierre Andre
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.\" This file may be copied under the terms of the GNU Public License.
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.TH NTFSTRUNCATE 8 "June 2014" "ntfs-3g @VERSION@"
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ntfstruncate \- truncate a file on an NTFS volume
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\fBntfstruncate\fR [\fIoptions\fR] \fIdevice\fR \fIfile\fR \fI[attr-type\fR [\fIattr-name\fR]] \fInew-length\fR
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truncates (or extends) a specified attribute belonging to a
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file or directory, to a specified length.
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Below is a summary of all the options that
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accepts. Nearly all options have two equivalent names. The short name is
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and the long name is preceded by
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Any single letter options, that don't take an argument, can be combined into a
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Long named options can be abbreviated to any unique prefix of their name.
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\fB\-f\fR, \fB\-\-force\fR
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This will override some sensible defaults, such as not using a mounted volume.
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Use this option with caution.
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\fB\-h\fR, \fB\-\-help\fR
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Show a list of options with a brief description of each one.
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Display licensing information.
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\fB\-n\fR, \fB\-\-no-action\fR
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Simulate the truncation without actually write to device.
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\fB\-q\fR, \fB\-\-quiet\fR
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Suppress some debug/warning/error messages.
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\fB\-v\fR, \fB\-\-verbose\fR
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Display more debug/warning/error messages.
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\fB\-V\fR, \fB\-\-version\fR
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Show the version number, copyright and license of
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Define a particular attribute type to be truncated (advanced use only).
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By default, the unnamed $DATA attribute (the contents of a plain file) will
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be truncated. The attribute has to be specified by a number in decimal
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0x10 16 "$STANDARD_INFORMATION"
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0x20 32 "$ATTRIBUTE_LIST"
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0x50 80 "$SECURITY_DESCRIPTOR"
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0x60 96 "$VOLUME_NAME"
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0x70 112 "$VOLUME_INFORMATION"
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0x90 144 "$INDEX_ROOT"
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0xA0 160 "$INDEX_ALLOCATION"
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0xC0 192 "$REPARSE_POINT"
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0xD0 208 "$EA_INFORMATION"
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0xF0 240 "$PROPERTY_SET"
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0x100 256 "$LOGGED_UTILITY_STREAM"
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Define the name of the particular attribute type to be truncated
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Specify the target size of the file.
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It will be rounded up to a multiple of the cluster size.
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A suffix of K, M, G, T, P or E may be appended to
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mean a multiplicative factor of a power of 1000. Similarly a suffix of
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Ki, Mi, Gi, Ti, Pi or Ei may be appended to mean a multiplicative factor
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Resize to 100MB the file database.db located in the Data directory
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which is at the root of an NTFS file system.
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.B ntfstruncate /dev/sda1 Data/database.db 100M
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There are no known problems with
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If you find a bug, please send an email
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describing the problem to the development team:
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ntfs\-3g\-devel@lists.sf.net
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was written by Anton Altaparmakov.
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package and is available from:
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http://www.tuxera.com/community/
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.BR ntfsfallocate (8),
added
removed
ntfsprogs/ntfstruncate.8.in
