NTFSTRUNCATE(8) | System Manager's Manual | NTFSTRUNCATE(8) |
NAME
ntfstruncate - truncate a file on an NTFS volume
SYNOPSIS
ntfstruncate [options] device file [attr-type [attr-name]] new-length
DESCRIPTION
ntfstruncate truncates (or extends) a specified attribute belonging to a file or directory, to a specified length.
OPTIONS
Below is a summary of all the options that ntfstruncate accepts. Nearly all options have two equivalent names. The short name is preceded by - and the long name is preceded by --. Any single letter options, that don't take an argument, can be combined into a single command, e.g. -fv is equivalent to -f -v. Long named options can be abbreviated to any unique prefix of their name.
- -f, --force
- This will override some sensible defaults, such as not using a mounted volume. Use this option with caution.
- -h, --help
- Show a list of options with a brief description of each one.
- -l
- Display licensing information.
- -n, --no-action
- Simulate the truncation without actually write to device.
- -q, --quiet
- Suppress some debug/warning/error messages.
- -v, --verbose
- Display more debug/warning/error messages.
- -V, --version
- Show the version number, copyright and license of ntfstruncate.
- attr-type
- Define a particular attribute type to be truncated (advanced use only). By
default, the unnamed $DATA attribute (the contents of a plain file) will
be truncated. The attribute has to be specified by a number in decimal or
hexadecimal :
Hex Decimal Name 0x10 16 "$STANDARD_INFORMATION" 0x20 32 "$ATTRIBUTE_LIST" 0x30 48 "$FILE_NAME" 0x40 64 "$OBJECT_ID" 0x50 80 "$SECURITY_DESCRIPTOR" 0x60 96 "$VOLUME_NAME" 0x70 112 "$VOLUME_INFORMATION" 0x80 128 "$DATA" 0x90 144 "$INDEX_ROOT" 0xA0 160 "$INDEX_ALLOCATION" 0xB0 176 "$BITMAP" 0xC0 192 "$REPARSE_POINT" 0xD0 208 "$EA_INFORMATION" 0xE0 224 "$EA" 0xF0 240 "$PROPERTY_SET" 0x100 256 "$LOGGED_UTILITY_STREAM" - attr-name
- Define the name of the particular attribute type to be truncated (advanced use only).
- new-length
- Specify the target size of the file. It will be rounded up to a multiple of the cluster size. A suffix of K, M, G, T, P or E may be appended to mean a multiplicative factor of a power of 1000. Similarly a suffix of Ki, Mi, Gi, Ti, Pi or Ei may be appended to mean a multiplicative factor of a power of 1024.
EXAMPLES
Resize to 100MB the file database.db located in the Data directory which is at the root of an NTFS file system.
ntfstruncate /dev/sda1 Data/database.db 100M
BUGS
There are no known problems with ntfstruncate. If you find
a bug, please send an email describing the problem to the development team:
ntfs-3g-devel@lists.sf.net
AUTHORS
ntfstruncate was written by Anton Altaparmakov.
AVAILABILITY
ntfstruncate is part of the ntfs-3g package and is
available from:
https://github.com/tuxera/ntfs-3g/wiki/
SEE ALSO
June 2014 | ntfs-3g 2022.10.3 |