truncate - Shrink or extend the size of each file to the specified size.
truncate
[-o|--io-blocks]
[-c|--no-create]
[-r|--reference]
[-s|--size]
[-h|--help]
[-V|--version]
<FILE>
Shrink or extend the size of each file to the specified size.
treat SIZE as the number of I/O blocks of the file rather than bytes (NOT IMPLEMENTED)
do not create files that do not exist
<RFILE>base the size of each file on the size of RFILE
<SIZE>set or adjust the size of each file according to SIZE, which is in bytes unless --io-blocks is specified
Print help
Print version
FILE>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
v(uutils coreutils) 0.10.0
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 files content:
truncate [-s|--size] 0 path/to/file
Empty the files 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.