TRUNCATE(1) User Commands TRUNCATE(1)
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.
do not create any files
treat SIZE as number of IO blocks instead of bytes
base size on RFILE
set or adjust the file size by SIZE bytes
--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 mul-
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report truncate trans-
lation bugs to <http://translationproject.org/team/>
Written by Padraig Brady.
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or
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.
GNU coreutils 8.22 June 2014 TRUNCATE(1)