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#!/usr/bin/execlineb -S1
# the -S1 tells execline to substitute 1 positional parameter
# which for this file is: the name of the service directory
# TODO:
# a sane example of handling the arguments would be nice
# populate some variables
define RUN_USER jdoe
define INSTANCE_NAME jane
backtick HOME { homeof ${RUN_USER} }
importas -n -u HOME HOME
# redirect STDERR to STDIN so it can be caught by a logging service
fdmove -c 2 1
# switch to a different user for running this
s6-setuidgid ${RUN_USER}
# handle SIGTERM
trap -x {
SIGTERM {
pipeline { echo "system_powerdown\n" }
s6-ipcclient ${HOME}/${INSTANCE_NAME}-monitor.socket
s6-ioconnect -67
}
}
# the command to start and supervise
imaginary_service -l 127.0.0.1 -p 31337 ${HOME}/run/listener_${INSTANCE_NAME}/${INSTANCE_NAME}.conf
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