set_lightshowpi_env.sh

#!/bin/bash
# Setup environment variables
PATH=$PATH
export PATH
INSTALL_DIR="$( cd "$(dirname "$0")" ; pwd -P )"
ENV_VARIABLE="SYNCHRONIZED_LIGHTS_HOME=${INSTALL_DIR}"
exists=`grep -r "$ENV_VARIABLE" /etc/profile*`

if [ -z "$exists" ]; then
    echo "# Lightshow Pi Home" > /etc/profile.d/lightshowpi.sh
    echo "$ENV_VARIABLE" >> /etc/profile.d/lightshowpi.sh
    echo "export SYNCHRONIZED_LIGHTS_HOME" >> /etc/profile.d/lightshowpi.sh
    echo "" >> /etc/profile.d/lightshowpi.sh
    echo "# Add Lightshow Pi bin directory to path" >> /etc/profile.d/lightshowpi.sh
    echo "PATH=\$PATH:${INSTALL_DIR}/bin" >> /etc/profile.d/lightshowpi.sh
    echo "export PATH" >> /etc/profile.d/lightshowpi.sh

    # Force set this environment variable in this shell (as above doesn't take until reboot)
    export $ENV_VARIABLE
fi

KEEP_EN="Defaults   env_keep="SYNCHRONIZED_LIGHTS_HOME""
exists=`grep "$KEEP_EN" /etc/sudoers`

if [ -z "$exists" ]; then
    echo "$KEEP_EN" >> /etc/sudoers
fi