Split and Join files Linux

First we need a compressed file,

tar -cvvzf file.tar.gz file.something

Now, we split the compressed file,

split -b 10M file.tar.gz "prefix_here"

(parts of 10 megas with the prefix "prefix_here")

To join the parts:

cat "prefix_here"* > file_joined.tar.gz 

And thats all! :)