ref: 447672be5c1e3e0b972c793d243383c429240b71
dir: /rc/bin/uptime/
#!/bin/rc clock=`{cat /dev/time} xx=`{{echo $clock(3) / $clock(4); echo '_/86400'}|hoc|sed 's/^\./0./g;s/\..*//g'} sec=$xx(1) days=$xx(2) cat /dev/sysname echo -n ' up '$days' days, ' timezone='MDT -21600' date $sec |awk '{print $4}'