TRUNCATE(1)                     User Commands                    TRUNCATE(1)

NAME         top

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

SYNOPSIS         top

       truncate OPTION... FILE...

DESCRIPTION         top

       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 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).

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

AUTHOR         top

       Written by Padraig Brady.

REPORTING BUGS         top

       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
       Report truncate translation bugs to
       <https://translationproject.org/team/>

COPYRIGHT         top

       Copyright © 2017 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         top

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

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

COLOPHON         top

       This page is part of the coreutils (basic file, shell and text
       manipulation utilities) project.  Information about the project can
       be found at ⟨http://www.gnu.org/software/coreutils/⟩.  If you have a
       bug report for this manual page, see
       ⟨http://www.gnu.org/software/coreutils/⟩.  This page was obtained
       from the tarball coreutils-8.29.tar.xz fetched from
       ⟨http://www.gnutls.org/download.html⟩ on 2018-02-02.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

GNU coreutils 8.29              December 2017                    TRUNCATE(1)

Pages that refer to this page: fallocate(1),  truncate(2)

HTML rendering created 2018-02-02 by Michael Kerrisk, author of The Linux Programming Interface, maintainer of the Linux man-pages project. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH.