gpg --full-generate-key
gpg --list-secret-keys
gpg --import yourfriends.key
gpg --export -a "Your Name" > your.key
gpg --export-secret-keys $KEY_ID > my-private-key.asc
gpg --import my-private-key.asc
# Encrypt
gpg -e text.txt
# Decrypt
gpg -d text.txt.gpg > text.txt
# Decrypt to terminal
gpg -d text.txt.gpg 2>/dev/null