3.11.41. uptime - Tell how long barebox has been running

3.11.41.1. Usage

uptime [-n]

3.11.41.2. Synopsis

This command formats the number of elapsed nanoseconds
as measured with the current clocksource
Note: Timekeeping is co-operative. If long running code does
not use delay/is_timeout/get_time_ns/getchar functions
timer may overrun resulting in incorrect results

3.11.41.3. Options

-n

output elapsed time in nanoseconds