Computer Tips - How can I simply use GPG (GnuPG) to encrypt a file?

Date: 2011jan4 Q. How can I simply use GPG (GnuPG) to encrypt a file? A. You don't have to use all the public/private key stuff you can just do:
gpg -c <file>
You will be prompted for a password (twice) and the encrypted file will be
<file>.gpg
Don't forget the password! use:
gpg -d <file>.gpg
do decrypt with the same password. That's why this is called symmetric encryption.