SHRINKFILE(1)SHRINKFILE(1)NAMEshrinkfile - shrink a file on a line boundary
SYNOPSISshrinkfile [ -n ] [ -m maxsize ] [ -s size ] [ -v ]
file...
DESCRIPTION
The shrinkfile program shrinks files to a given size if
the size is larger than maxsize,
preserving the data at the end of the file. Truncation
is performed on line boundaries, where a line is a series
of bytes ending with a newline, \n. There is no line
length restriction and files may contain any binary data.
Temporary files are created in the <pathtmp in inn.conf>
directory. The ``TMPDIR'' environment variable may be
used to specify a different directory.
A newline will be added to any non-empty file that does
not end with a newline. The maximum file size will not be
exceeded by this addition.
OPTIONS-s By default, size is assume to be zero and files are
truncated to zero bytes. By default, maxsize is
the same as size. If maxsize is less than size,
maxsize is reset to size. The ``-s'' flag may be
used to change the truncation size. Because the
program truncates only on line boundaries, the
final size may be smaller then the specified trun
cation size. The size and maxsize parameter may
end with a ``k'', ``m'', or ``g'', indicating kilo
byte (1024), megabyte (1048576) or gigabyte
(1073741824) lengths. Uppercase letters are also
allowed. The maximum file size is 2147483647
bytes.
-v If the ``-v'' flag is used, then shrinkfile will
print a status line if a file was shrunk.
-n If the ``-n'' flag is used, then shrinkfile will
exit 0 if any file is larger than maxsize and exit
1 otherwise. No files will be altered.
EXAMPLES
Example usage:
shrinkfile-s 4m curds
shrinkfile-s 1g -v whey
shrinkfile-s 500k -m 4m -v curds whey
if shrinkfile-n -s 100m whey; then echo whey is way too big; fi
HISTORY
Written by Landon Curt Noll <chongo@toad.com> and Rich
$alz <rsalz@uunet.uu.net> for InterNetNews.
SEE ALSOinn.conf(5)SHRINKFILE(1)
