SHRINKFILE(1)						      General Commands Manual						     SHRINKFILE(1)

NAME

       shrinkfile - shrink a file on a line boundary

SYNOPSIS

       shrinkfile [ -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.  Trun-
       cation is performed on line boundaries, where a line is a series of bytes ending with a newline, ``
''.  There is no line length  restric-
       tion 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  addi-
       tion.

OPTIONS

       -s     By  default, size is assumed 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  trun-
	      cates only on line boundaries, the final size may be smaller then the specified truncation size.	The size and maxsize parameter may
	      end with a ``k'', ``m'', or ``g'', indicating kilobyte (1024), megabyte (1048576) or gigabyte (1073741824) lengths.  Uppercase  let-
	      ters 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 ALSO

       inn.conf(5)

																     SHRINKFILE(1)