truncate shrinks or extends the size of each file to the specified size. Synopsis:
truncate option... file...
Any file that does not exist is created.
If a file is larger than the specified size, the extra data is lost. If a file is shorter, it is extended and the extended part (or hole) reads as zero bytes.
The program accepts the following options. Also see Common options.
‘KB’ => 1000 (KiloBytes) ‘K’ => 1024 (KibiBytes) ‘MB’ => 1000*1000 (MegaBytes) ‘M’ => 1024*1024 (MebiBytes) ‘GB’ => 1000*1000*1000 (GigaBytes) ‘G’ => 1024*1024*1024 (GibiBytes)
and so on for ‘T’, ‘P’, ‘E’, ‘Z’, and ‘Y’.
size may also be prefixed by one of the following to adjust the size of each file based on their current size:
‘+’ => extend by ‘-’ => reduce by ‘<’ => at most ‘>’ => at least ‘/’ => round down to multiple of ‘%’ => round up to multiple of
An exit status of zero indicates success, and a nonzero value indicates failure.