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          <h1>hjsplit and linux split</h1>
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    <abbr class="published" title="2009-06-23T00:58:00+05:30">
       on 23.06.2009
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    <p>The other day I had to fit in a 4.4 GB file (A Debian testing dvd iso
image, if you want to know) on a 4 GB thumb drive. This, of course, is
not possible. So I had to split the file into chunks, transfer them
twice, take them to my friend's windows machine and use hjsplit to join
the files. How did I split the file so hjsplit could read it, when I
didn't use the linux version of hjsplit?</p>
<p>It looks like hjsplit splits its files by just cutting them into pieces.
This is exactly what is done by the split command. Which is probably why
I could use the linux split to split the file into a format hjsplit
could join.</p>
<p>You could use a command similar to this one if you want to try it out :</p>
<p>$ split -b900M -d
/home/anirudh/downloads/debian/debian-testing-i386-DVD-1.iso
debian-testing-i386-DVD-1.iso.</p>
<p>the '-b' option is used to specify the size of each chunk - 900 MB in
this case. '-d' means the output should be numeric (000,001,002...). Now
we specify the large file and a prefix to attach to the generated
filenames (note the dot at the end). This command will generate files :</p>
<p>debian-testing-i386-DVD-1.iso.000</p>
<p>debian-testing-i386-DVD-1.iso.001</p>
<p>debian-testing-i386-DVD-1.iso.002</p>
<p>debian-testing-i386-DVD-1.iso.003</p>
<p>debian-testing-i386-DVD-1.iso.004</p>
<p>Now this should be relatively easy to join with hjsplit. Do some
renaming if required.</p>
<p>Edit :</p>
<p>meaculpa has noted that split starts renaming its files with 000 and not
001 as required by hjsplit. Please check <a class="reference external" href="#comment-51">his comment
below</a> for the solution.</p>
<p>As a follow up to this post, I had written another on <a class="reference external" href="http://gingerjoos.com/blog/linux/how-to-join-split-files">how to join the
split files in
linux</a>. You
can <a class="reference external" href="http://gingerjoos.com/blog/linux/how-to-join-split-files">check it out as
well</a>.</p>

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