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truncate

Langue: en

Version: October 2010 (fedora - 01/12/10)

Autres sections - même nom

Section: 1 (Commandes utilisateur)

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 © 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 aqtruncate invocationaq

should give you access to the complete manual.

L'amour a besoin des yeux, comme la pensée a besoin de la mémoire.
-+- Suzanne Curchod, dite Mme Necker (1737-1794) -+-