TRUNCATE
Section: User Commands (1)
Updated: April 2010
NAME
truncate - shrink or extend the size of a file to the specified size
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=FILE
-
use this FILE's size
- -s, --size=SIZE
-
use this 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 following:
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.
Note that the -r and -s options are mutually exclusive.
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://translationproject.org/team/>
COPYRIGHT
Copyright © 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
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.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- AUTHOR
-
- REPORTING BUGS
-
- COPYRIGHT
-
- SEE ALSO
-
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Time: 07:35:58 GMT, March 26, 2013