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#!/bin/sh
uptime="$(uptime)"
uptime="${uptime#*up }"
d=0
case "$uptime" in
*day*)
d="${uptime%% *}"
uptime="${uptime#*, }"
;;
esac
h="${uptime%%:*}"
h="${h#0}"
uptime="${uptime#*:}"
m="${uptime%%,*}"
m="${m#0}"
printf '{"d":%d,"h":%d,"m":%d}\n' "$d" "$h" "$m"
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