aredn/files/etc/hotplug.d/button/00-button

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. /lib/functions.sh
do_button () {
local button
local action
local handler
local min
local max
config_get button $1 button
config_get action $1 action
config_get handler $1 handler
config_get min $1 min
config_get max $1 max
[ "$ACTION" = "$action" -a "$BUTTON" = "$button" -a -n "$handler" ] && {
[ -z "$min" -o -z "$max" ] && eval $handler
[ -n "$min" -a -n "$max" ] && {
[ $min -le $SEEN -a $max -ge $SEEN ] && eval $handler
}
}
}
config_load system
config_foreach do_button button