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Top Forums UNIX for Advanced & Expert Users smart question Post 76800 by jerardfjay on Thursday 30th of June 2005 03:46:49 PM

06-30-2005

Registered User

assuming your input file is in_file. You could code something like this

Code:

#! /usr/bin/ksh

size=$(wc -c in_file | awk -F " " '{print $1}')
half_size=`expr $size / 2`
split -b $half_size in_file

The result of the final split command will be two or three files name xaa, xab and xac. you will get two files if the in_file is even number in size else three files with the last file xac being just 1 byte.
If you wanted the first half just read xaa, else read xab and xac if available for the latter.

jerardfjay

Last edited by jerardfjay; 06-30-2005 at 04:48 PM.. Reason: more explanation

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tiffsplit

tiffsplit(1)							   User Commands						      tiffsplit(1)

NAME

       tiffsplit - split a multi-image TIFF into single-image TIFF files

SYNOPSIS

       tiffsplit src.tif [prefix]

DESCRIPTION

       tiffsplit splits a multi-directory (page) TIFF file to create one or more single-directory (page) TIFF files. The output filenames are cre-
       ated by concatenating a prefix, a lexically ordered suffix in the range [aa-zz], and the suffix .tif. For example, xaa.tif,  xab.tif,  ...,
       xzz.tif. If a prefix is not specified on the command line, the default prefix x is used.

OPTIONS

       None

OPERANDS

       The following operands are supported:

       src.tif	       The name of the input file.

       prefix	       The prefix used to create the output filenames.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

	tiffinfo(1), tiffcp(1), libtiff(3)

NOTES

       Only a select set of "known tags" is copied when splitting.

       Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.10							    26 Mar 2004 						      tiffsplit(1)