Compress files and encrypt them

Compress and “zip” (or “tar”) multiple files and encrypt the compressed output.

tar \
  --gzip \
  --absolute-names \
  --create \
    "${HOME}/.some/directory" \
    "${HOME}/other/directory" \
  | gpg \
    --batch --yes \
    --symmetric \
    --output ./data.tar.gz

The file can be decrypted like so.

gpg \
  --output ./decrypted.tar.gz \
  --decrypt ./data.tar.gz