Encrypt a directory into archive.gpg using a passphrase

Encrypt files and directories in an archive using GPG.
More information: <https://www.gnupg.org/documentation/manuals/gnupg/gpg_002dzip.html>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

gpg-zip --symmetric --output {{archive.gpg}} {{path/to/directory}}

click the source code to copy install gpg-zip on any operating system with command-not-found.com