Upstart script for Redshift (http://jonls.dk/redshift/)

redshift.conf

# Redshift upstart script
#
# IMPORTANT: you have to specify your lat/lng manually, or redshift won't start. Either put
#            it in your config file or pass it explicitly
#

description "Redshift"

start on runlevel [2345]
stop on runlevel [!2345]

env DISPLAY=":0"
export DISPLAY

# Option 1
setuid YOUR_USER
setgid YOUR_USER
exec /usr/local/bin/redshift

# Option 2
# exec /usr/local/bin/redshift -c /path/to/redshift.conf

# Option 3
# exec /usr/local/bin/redshift -l LAT:LNG