shrinkfile - shrink a file on a line boundary


   shrinkfile [ -n ] [ -m maxsize ] [ -s size ] [ -v ] file...


   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  /var/spool/news/in.coming/tmp
   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.


   -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  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 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.


   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


   Written  by  Landon  Curt  Noll   <>   and   Rich   $alz
   <> for InterNetNews.



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