How to determine Uptime

For knowledge/testing and troubleshooting, is there a way to find the actual uptime (a la *nix ‘uptime’ command)?

Either through the GUI, or via CLI?

TIA

some have put their units in “heartbeat mode” and waited to see when the LED goes solid again.

Hello @MotobikeMan - thanks for the reply. Here is what I am thinking:

I am looking for a way to show the current length of time the unit has been “up” - whether to show stability, or during troubleshooting with precise times that show it has been running.

Here is an example from *OSX command line:
16:28:10 up 102 days, 19:10, load average: 1.03, 1.14, 1.16

Here is an example from DD-WRT (router)
Time: 03:30:01 up 60 days, 3:30, load average: 0.00, 0.00, 0.00

Here is an example from ASUSWRT (router)
102 days 19 hours 12 minute(s) 14 seconds

The above commands take away the end user needing to watch/monitor manually.

Use some software like PRTG that can monitor devices on your network via ping or http and then it will log it for you with a graph and everything. PRTG is free for 100 sensors.