Encrypting Directories

To produce a single encrypted file containing all files in the directory, with symmetric encryption:

tar cvf -name_of_directory | gpg -c > files.tar.gpg

or key-based encryption:-

tar cvf -name_of_directory | gpg -e > files.tar.gpg

To encrypt each file separately:-

find name_of_directory -type f -exec gpg -e '{}' \;