Manual Reference Pages - SHRINKFILE (1)
shrinkfile - shrink a file on a line boundary
-m maxsize ]
-s size ]
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
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.
size is assumed to be zero and files are truncated to zero bytes.
maxsize is the same as
maxsize is less than
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 truncation size.
maxsize parameter may end with a k, m, or g, indicating
kilobyte (1024), megabyte (1048576) or gigabyte (1073741824) lengths.
Uppercase letters are also allowed.
The maximum file size is 2147483647 bytes.
If the -v flag is used, then
shrinkfile will print a status line if a file was shrunk.
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.
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
Written by Landon Curt Noll <firstname.lastname@example.org> and Rich $alz
<email@example.com> for InterNetNews.
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