NAME¶

truncate - Shrink or extend the size of each file to the specified size.

SYNOPSIS¶

truncate [-o|--io-blocks] [-c|--no-create] [-r|--reference] [-s|--size] [-h|--help] [-V|--version] <FILE>

DESCRIPTION¶

Shrink or extend the size of each file to the specified size.

OPTIONS¶

-o, --io-blocks

treat SIZE as the number of I/O blocks of the file rather than bytes (NOT IMPLEMENTED)

-c, --no-create

do not create files that do not exist

-r, --reference <RFILE>

base the size of each file on the size of RFILE

-s, --size <SIZE>

set or adjust the size of each file according to SIZE, which is in bytes unless --io-blocks is specified

-h, --help

Print help

-V, --version

Print version

<FILE>

EXTRA¶

SIZE is an integer with an optional prefix and optional unit. The available units (K, M, G, T, P, E, Z, and Y) use the following format:
'KB' => 1000 (kilobytes)
'K' => 1024 (kibibytes)
'MB' => 1000*1000 (megabytes)
'M' => 1024*1024 (mebibytes)
'GB' => 1000*1000*1000 (gigabytes)
'G' => 1024*1024*1024 (gibibytes) SIZE may also be prefixed by one of the following to adjust the size of each file based on its current size:
'+' => extend by
'-' => reduce by
'<' => at most
'>' => at least
'/' => round down to multiple of
'%' => round up to multiple of

VERSION¶

v(uutils coreutils) 0.8.0

EXAMPLES¶

Set a size of 10 GB to an existing file, or create a new file with the specified size:

truncate [-s|--size] 10G path/to/file

Extend the file size by 50 MiB, fill with holes (which reads as zero bytes):

truncate [-s|--size] +50M path/to/file

Shrink the file by 2 GiB, by removing data from the end of file:

truncate [-s|--size] -2G path/to/file

Empty the file's content:

truncate [-s|--size] 0 path/to/file

Empty the file's content, but do not create the file if it does not exist:

truncate [-s|--size] 0 [-c|--no-create] path/to/file

The examples are provided by the tldr-pages project <https://tldr.sh> under the CC BY 4.0 License. Please note that, as uutils is a work in progress, some examples might fail.