for example, you can split a file originalfile.txt,
commnd: split -b 10 originalfile.txt newfile
this will result you files newfileaa newfileab newfileac each with 10 bytes.you can split using linecount also.
split -l 100 originalfile.txt new will result you files with linecount 100 each.
cat new* >> originalfile.txt will merge all files back.
I use Hjsplit to split my files because it’s FREE and only 130 KB with a simple interface.
Split your file into parts with SSH tool.
Connect to your host.
Go to the directory where you uploaded the file parts:
Now use the cat command to merge the split parts.
> cat file_name* > newfile_name
Now list the files again with dir command and you will see the new file.