Provided by: coreutils_8.21-1ubuntu5_amd64 bug


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


       truncate OPTION... FILE...


       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

              output version information and exit

       SIZE is an integer and optional unit (example: 10M is 10*1024*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.


       Written by Padraig Brady.


       Report truncate bugs to
       GNU coreutils home page: <>
       General help using GNU software: <>
       Report truncate translation bugs to <>


       Copyright  ©  2013  Free  Software  Foundation, Inc.  License GPLv3+: GNU GPL version 3 or
       later <>.
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.


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

       The  full  documentation  for truncate is maintained as a Texinfo manual.  If the info and
       truncate programs are properly installed at your site, the command

              info coreutils 'truncate invocation'

       should give you access to the complete manual.