TRUNCATE(1)                   User Commands                   TRUNCATE(1)

NAME
       truncate  -  shrink  or extend the size of a file to the specified
       size

SYNOPSIS
       truncate OPTION... FILE...

DESCRIPTION
       Shrink or extend the size of each FILE to the specified size

       A FILE argument 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 sparse
       extended part (hole) reads as zero bytes.

       Mandatory arguments  to  long  options  are  mandatory  for  short
       options too.

       -c, --no-create
              do not create any files

       -o, --io-blocks
              treat SIZE as number of IO blocks instead of bytes

       -r, --reference=RFILE
              base size on RFILE

       -s, --size=SIZE
              set or adjust the file size by SIZE bytes

       --help display this help and exit

       --version
              output version information and exit

       The SIZE argument is an integer and optional unit (example: 10K is
       10*1024).  Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,...
       (powers of 1000).  Binary prefixes can be used, too: KiB=K, MiB=M,
       and so on.

       SIZE may also be prefixed by one of the following modifying  char‐
       acters:  '+'  extend by, '-' reduce by, '<' at most, '>' at least,
       '/' round down to multiple of, '%' round up to multiple of.

AUTHOR
       Written by Padraig Brady.

REPORTING BUGS
       GNU  coreutils  online  help:  <https://www.gnu.org/software/core‐
       utils/>
       Report    any   translation   bugs   to   <https://translationpro‐
       ject.org/team/>

COPYRIGHT
       Copyright © 2020 Free Software Foundation, Inc.   License  GPLv3+:
       GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       dd(1), truncate(2), ftruncate(2)

       Full  documentation  <https://www.gnu.org/software/coreutils/trun‐
       cate>
       or available locally via: info '(coreutils) truncate invocation'

GNU coreutils 8.32              April 2020                    TRUNCATE(1)