Linux "truncate" Command Line Options and Examples

truncate a file to a specified length

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.

Usage:

truncate OPTION... FILE...

Related Commands

Command Line Options:

-c

do not create any files


                            truncate -c ...

-o

treat SIZE as number of IO blocks instead of bytes


                            truncate -o ...

-r

base size on RFILE


                            truncate -r ...

-s

set or adjust the file size by SIZE bytes


                            truncate -s ...

--help

display this help and exit


                            truncate --help ...

--version

output version information and exitThe SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (pow‐ers of 1024) or KB,MB,... (powers of 1000).SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' atmost, '>' at least, '/' round down to multiple of, '%' round up to multiple of.AUTHORWritten by Padraig Brady.REPORTING BUGSGNU coreutils online help: <http://www.gnu.org/software/coreutils/>Report truncate translation bugs to <http://translationproject.org/team/>COPYRIGHTCopyright © 2017 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 per‐mitted by law.


                            truncate --version ...