Migrating your local piwigo application 
On Gertie in any temp dir:
  cd /Work/www/piwigo
  tar -cvjf /MyStuff/Piwigo/piwigo.tar.bz2 ./*
  cd /MyStuff/Piwigo
  ls -la piwigo.tar.bz2
  split -b 450M piwigo.tar.bz2 "piwigo.tar.bz2.part"
  
Ftp individual parts to a work dir on your domain server..Filezilla works well.

On domain server file manager (HostGator C-Panel) open a terminal, locate tar parts,
and recombine with:
  cat piwigo.tar.bz2.parta* >piwigo.bz2
  
Back in a file manager, extract piwigo.bz2 to public_html.


[[https://www.tecmint.com/split-large-tar-into-multiple-files-of-certain-size/| How to Split Large ‘tar’ Archive into Multiple Files of Certain Size]]