signing git commits with GPG keys.

git-gpg-sign.txt

# generate a key if you don't have one already
gpg --full-gen-key

# list the keys in long format and copy the key id after sec rsa4096/<KEY>
gpg --list-secret-keys --keyid-format LONG
 
# export the public key and post into your git profile (ui)
gpg --armor --export 127CAA89CEA6BE66
 
# update the global git configs, 
git config --global user.signingkey 127CAA89CEA6BE66
git config --global commit.gpgsign true

# update your GPG_TTY
echo 'export GPG_TTY=$(tty)' >> ~/.bash_profile

#do a git commit and it should prompt you for your gpg password.