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How can I rejoin two files into one?

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Not only is it possible to rejoin two files into one, you already have the tool on your machine to do so.

by , © 2005

I split a file a while ago. I don't have a copy of the program used and I can't remember what it was. All I know is that it split the 2 files into segments ending in ".1" and ".2". Is there a program out there that will universally rejoin files? Or do I have to keep hunting 'til I find the program that I used?

•

The term for what you're attempting to do is called "concatenation" - basically splicing two files together to create a single file.

And the tool's already on your machine.

•

The copy command in Windows will do it.

In a command shell:

copy file1 /b + file2 /b file3

Will join file1 and file2 to create file 3. The "/b" indicates that Copy should treat the file as binary rather than text.

Article C2295 - March 1, 2005

Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

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Recent Comments
4 Comments

Greatings.
I would like to suggest an easier way to do the same process.

Do just like this at the directory where pieces are:
copy/b 01.ca1+02.ca2+03.ca3+04.ca4 wimamp.exe
Where: first piece+2nd_3rd+4th and else,equals the final file name splited, which name you are supposed to previously know.

For example I splited Winamp.
System will act then:

D:\Util\Win-util\Splitters\Fsplit>copy/b 01.ca1+02.ca2+03.ca3+04.ca4 wimamp.exe
01.CA1
02.CA2
03.CA3
04.CA4
1 files) copyed(s).

Posted by: Nule at March 2, 2005 11:32 PM

Can u please tell me how can I split the files when I joined files with copy /b

Hemant

Posted by: Hemant at March 22, 2005 8:03 AM

i use file splitter & joiner 3.1 for problems like yours.. its just a small apps.

Posted by: Keivn at October 27, 2008 3:47 AM

follow below steps to split files...

1. change extension to .rar of merged file
eg. final.jpg to final.rar

2. now open that .rar file and u can copy
your inner files from there by extracting
them...

Best Luck

Posted by: jaimy at July 24, 2010 3:37 PM
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