truncate (1) - Linux Man Pages
truncate: shrink or extend the size of a file to the specified size
NAMEtruncate - shrink or extend the size of a file to the specified size
SYNOPSIStruncate 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.
- -c, --no-create
- do not create any files
- -o, --io-blocks
- treat SIZE as number of IO blocks instead of bytes
- -r, --reference=RFILE
- base size on RFILE
- -s, --size=SIZE
- set or adjust the file size by SIZE bytes
- 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 multiple of.
AUTHORWritten by Padraig Brady.
COPYRIGHTCopyright © 2013 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 ALSOdd(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.
Linux man pages generated by: SysTutorials