Version 2.5
For Mac OS 10.3.9 and higher
Now: as Universal Binary
Split&Concat 2.5
Introduction
In Internet newsgroups large files often are split into smaller parts since messages can not be
of more than a certain size to be able to post them in newsgroups. For that reason you can
find often binary files that are split in parts like filename.mp3.001, filename.mp3.002,
filename.mp3.003, etc. While it is possible to put these parts together using commands in the
Terminal, not everybody is comfortable with the command line.
That's why I decided to write a small utility that makes it easy to split large files or merge
pre-split files -- all from a comfortable OS X interface. This simplifies the process of
uploading and downloading split files from the Internet, as well as making it possible to store
a large file across two or more CD-R's.
First, a word about Resource Forks.
Starting with version 1.5, Split&Concat now gives you a warning if a file to be processed
contains a resource fork. Splt&Concat uses Unix commands to perform its job, which means
that the resource fork of every file that you would attempt to split or concatenate will be lost.
For many file formats (.mpg, .mp3, .avi, .pdf, etc.) this is not a problem, but for certain
formats the result will be a file that you cannot use anymore. If this is the case, the best
solution is to first place the file on a disk image (using Disk Copy, or Toast etc.), then
compress the disk image (convert to compressed), and finally split the compressed disk image
file with Split&Concat. If you then concatenate the split parts of the disk image file, the
resulting merged file will be a disk image that contains an exact copy of the original file.
Splitting files
Just click "Split" and the program will ask you to choose a file. The resulting split files will
be placed in the same folder as the original file by default. You can select a different folder by
checking the check box next to "Select output folder" in the "Options" area. If you want to
use Drag and Drop to split a file, make sure "Select output folder" is checked before dragging
and dropping.
Split files (that is, the resulting batch of files from a split) cannot be larger than 1999 MB
each, due to a file system restriction in OS X. Additionally, Split&Concat limits the number
of files generated from a split to a 500.
Please note that the file to be split MUST have a FILE EXTENSION (for example, .mp3 or
.avi)! Otherwise, the program will warn you and quit. Just add a three-letter extension to the
file and try again.
If a file with that filename and an extension ".001" already exists in the directory, then the
program will ask you if you want to delete these older split files.
Concatenate (recombining) s…
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