1. Executable programs or shell commands
TRUNCATESection: User Commands (1)
Updated: February 2022
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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 sparse 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
The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (powers of 1000). Binary prefixes can be used, too: KiB=K, MiB=M, and so on.
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.
REPORTING BUGSGNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHTCopyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://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)
Full documentation <https://www.gnu.org/software/coreutils/truncate>
or available locally via: info '(coreutils) truncate invocation'
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