I often use
tar to backup my stuff in 4 gigabyte chunks to a directory on a FAT32-formatted disk, as documented here.
To get that done, I use the following command:
tar -cvpj /path/to/directory/ | split -d -b 4000m - "backup.tar.bz2.".
I want to encrypt these
tar.bz2.* files with
openssl aes-256-cbc, if possible right after making a 4 GB chunk instead of after the whole backup job. I'd like to know the proper command to do that, and how to reconstitute the archive after creation.