get system boot time in ruby

You can get the system boot time in Ruby by running the following command:

main.rb
uptime = `uptime`.strip
boot_time = Time.now - uptime.match(/up\s+(.*)\d\s*,\s*(\d+\s+:\s+\d+)\s/)[1].to_i * 60
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In the above code, we are first running the uptime command which returns the system's uptime. We then extract the boot time from the output of the uptime command using a regular expression. Finally, we subtract the uptime from the current time to get the system's boot time.

Note that this code will work on Unix-like systems (Linux, macOS, etc.) but may not work on Windows operating systems.