truncate


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 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

       --help display this help and exit

       --version
              output version information and exit

       SIZE may be (or may be an integer optionally followed by) one  of  fol-
       lowing: KB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T,
       P, E, Z, Y.

       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
       Written by Padraig Brady.

REPORTING BUGS
       Report truncate bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report   truncate   translation   bugs    to    <http://translationpro-
       ject.org/team/>

COPYRIGHT
       Copyright  (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       should give you access to the complete manual.



GNU coreutils 8.12.197-032bb    September 2011                     TRUNCATE(1)
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