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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.
−c, −−no−createdo not create any files
−o, −−io−blockstreat SIZE as number of IO blocks instead of bytes
−r, −−reference=RFILEbase size on RFILE
−s, −−size=SIZEset or adjust the file size by SIZE
−−helpdisplay this help and exit
−−versionoutput 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.
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/>
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.
| COPYRIGHT |
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Copyright © 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. |