1TRUNCATE(1)                      User Commands                     TRUNCATE(1)
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NAME

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

9       truncate OPTION... FILE...
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DESCRIPTION

12       Shrink or extend the size of each FILE to the specified size
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14       A FILE argument that does not exist is created.
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16       If  a  FILE  is larger than the specified size, the extra data is lost.
17       If a FILE is shorter, it is extended and the extended part (hole) reads
18       as zero bytes.
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20       Mandatory  arguments  to  long  options are mandatory for short options
21       too.
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23       -c, --no-create
24              do not create any files
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26       -o, --io-blocks
27              treat SIZE as number of IO blocks instead of bytes
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29       -r, --reference=RFILE
30              base size on RFILE
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32       -s, --size=SIZE
33              set or adjust the file size by SIZE bytes
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35       --help display this help and exit
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37       --version
38              output version information and exit
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40       SIZE is an integer and optional unit (example:  10M  is  10*1024*1024).
41       Units  are K, M, G, T, P, E, Z, Y (powers of 1024) or KB, MB, ... (pow‐
42       ers of 1000).
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44       SIZE may also be prefixed by one of the following modifying characters:
45       '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round down
46       to multiple of, '%' round up to multiple of.
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48       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>
49       Report    truncate    translation   bugs   to   <http://translationpro‐
50       ject.org/team/>
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AUTHOR

53       Written by Padraig Brady.
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56       Copyright © 2013 Free Software Foundation, Inc.   License  GPLv3+:  GNU
57       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
58       This  is  free  software:  you  are free to change and redistribute it.
59       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

62       dd(1), truncate(2), ftruncate(2)
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64       The full documentation for truncate is maintained as a Texinfo  manual.
65       If  the info and truncate programs are properly installed at your site,
66       the command
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68              info coreutils 'truncate invocation'
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70       should give you access to the complete manual.
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74GNU coreutils 8.22               October 2018                      TRUNCATE(1)
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