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       The SIZE argument is an integer and  optional  unit  (example:  10K  is
41       10*1024).   Units  are  K,M,G,T,P,E,Z,Y  (powers  of 1024) or KB,MB,...
42       (powers of 1000).  Binary prefixes can be used, too: KiB=K, MiB=M,  and
43       so on.
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45       SIZE may also be prefixed by one of the following modifying characters:
46       '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round down
47       to multiple of, '%' round up to multiple of.
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AUTHOR

50       Written by Padraig Brady.
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REPORTING BUGS

53       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
54       Report any translation bugs to <https://translationproject.org/team/>
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57       Copyright  ©  2019  Free Software Foundation, Inc.  License GPLv3+: GNU
58       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
59       This is free software: you are free  to  change  and  redistribute  it.
60       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

63       dd(1), truncate(2), ftruncate(2)
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65       Full documentation <https://www.gnu.org/software/coreutils/truncate>
66       or available locally via: info '(coreutils) truncate invocation'
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70GNU coreutils 8.31               October 2019                      TRUNCATE(1)
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