presents
File Split v1.2

This document contains following information.

1) Introduction

2) How to start the program?

3) How to split a file?

4) How to merge the partitions?

5) Further Help

6) Other products

7) About author

Introduction

You can use this program for splitting a large file into smaller parts according your choice, so as to conveniently transfer it across a network or using floppy disks or thro' email. You can specify the size of each partition to be created or the no. of partitions to be created.

You don't need this program to merge the partitions created by it. A DOS batch file as well as a UNIX shell script file are created while partitioning whose execution will automatically merge the partitions. So you can pass the partitions to your friends who don't have this program (and for that matter, not even Java) installed on their machine.

However, an option to merge the partitions using FileSplit itself is also provided. And its use is advised as it makes checks regarding size and checksums of the partition files being transferred. So if any partition is missing or is corrupted, then the method will notify you.

The program is in the form of executable jar file. You need to have Java Runtime Environment installed on your machine. If you don't have it, you can install it from java.sun.com.

The source code of the program is available. The source code is fully documented, with all major steps explained. It's worth taking a look at the source code.

How to start the program?

Unzip the downloaded file and do following. You need to have the CLASSPATH properly set to run FileSplit.

Method 1:
Double-click on FileSplit.jar

Method 2:
Double-click on FileSplit.bat

Method 3:
Double-click on FileSplit.exe

Method 4:
On the DOS window, type
    FileSplit
OR
    java -jar FileSplit.jar
 

How to split a file?

Step I :
Specify the name of the file to be split i.e. enter the entire path OR use the browse button to choose the file.

Step II :
Select one of the two options for splitting criteria - "Split by Size", where you would enter the size of the partitions, or "Partition by Number of Parts", where you would specify the number of partitions to be formed, size of each partition will be calculated automatically.

Step III :
Enter the size of partitions OR the number of partitions depending on your choice in step II

Step IV :
Press the GO! button.

The partitions along with the dos batch file, UNIX shell script file, and FileSplit project file for merging will be created in the same directory as that of the original file. Names of the partitions would be the original filename with extension, if any, followed by the partition number as extension. If some error in input occurs, you will be prompted by the program.

Now you will have to transfer all the files generated to the destination machine to obtain the original file back.

Merging the partitions into the original file

There are three ways to merge the partitions, one for DOS/Windows, one for unix and one for all the operating systems with FileSplit installed.

For DOS/Windows

Step I :
Put all the partitions & the DOS batch file formed during the partitioning in the same directory.

Step II :
Run the DOS Batch file. The original file will be created in the same directory.

Note that if some partitions are missing, no warning will be given. However corresponding portion in the file will be missing and hence the file may be corrupted.

For Unix/Linux

Step I :
Put all the partitions & the Unix script file formed during the partitioning in the same directory.

Step II :
Change the permissions of the script to make it executable. For example, run chmod 500 scriptname

Step III :
Run the script using the command ./scriptname

For any operating system with FileSplit installed.

Step I :
Put all the partitions & the FileSplit project file formed during the partitioning in the same directory.

Step II :
Run FileSplit and go to merge tab at the top

Step III :
Select the project file using the browse button

Step IV :
Press G0! The original file will be created in the same directory. If any of the file was corrupted or missing, FileSplit would inform you.

A word of caution while merging!!

If you do not place all the partitions in the same folder while merging, you may still get a file with original file name, but it will not be a complete file.

Still Facing Problems??

If you still have any sort of problem, you can seek my help by mailing me at vishalm@iitb.ac.in

Other Products

You can download a lots of java stuff from http://www.geocities.com/thejavaplanet which includes java applications like EncryptDecrypt, Calculator, java games like JSnake, Need More Speed?, visual effects like rain, lake, explosion, tunnel and java applets like navigation, search, newsticker & firetext.

You can also download wallpapers, screensavers, windows utilities, windows games, fun programs & books from http://www.geocities.com/vishalmamania

About Author

The author Vishal Mamania is a postgraduate student in Computer Science & Engineering department of Indian Institute of Technology.
You can contact me at vishalm@iitb.ac.in or
http://www.geocities.com/vishalmamania (my home page) or
http://www.geocities.com/thejavaplanet (java & only java).

Keep checking for newer versions at http://www.geocities.com/thejavaplanet/javaapps/filesplit/index.html and for more programs. You can obtain the fully documented source code from http://www.geocities.com/thejavaplanet/javaapps/filesplit/source.html. Please feel free to distribute this software to as many people you want. Bug reports and suggestions are very welcome.