forgot to commit openos

data/openos/bin/uptime.lua

@@ -0,0 +1,13 @@
+local computer = require("computer")
+
+local seconds = math.floor(computer.uptime())
+local minutes, hours = 0, 0
+if seconds >= 60 then
+  minutes = math.floor(seconds / 60)
+  seconds = seconds % 60
+end
+if minutes >= 60 then
+  hours = math.floor(minutes / 60)
+  minutes = minutes % 60
+end
+io.write(string.format("%02d:%02d:%02d\n", hours, minutes, seconds))