Setting up a GPG Agent

.bash_profile

# Inser this snippet into your ~/.bash_profile

# Set up the GPG Agent
# http://fvue.nl/wiki/Debian_4.0:_Installing_gpg-agent
if [ -f ${HOME}/.gpg-agent-info ] && \
    kill -0 $(cut -d: -f 2 ${HOME}/.gpg-agent-info)
then
    # Yes, '.gpg-agent-info' points to valid gpg-agent process;
    # Indicate gpg-agent process
    GPG_AGENT_INFO=$(cat ${HOME}/.gpg-agent-info | cut -c 16-)
else
    # No, no valid gpg-agent process available;
    # Start gpg-agent
    eval $(gpg-agent --daemon --no-grab --write-env-file ${HOME}/.gpg-agent-info)
fi
export GPG_TTY=$(tty)
export GPG_AGENT_INFO