poor man's uptime on macOS by parsing JSON output of system_profiler

uptime2.sh

system_profiler SPSoftwareDataType -json |
jq --raw-output --argjson labels '[ "day", "hour", "minute", "second" ]' '
.SPSoftwareDataType[0].uptime[3:] // empty | split(":") as $uptime |

def pprint:
  ($uptime[.] | tonumber) as $val |
  if $val == 0 then empty else
    "\($val) \($labels[.])" + (if $val == 1 then "" else "s" end)
  end;

[range($uptime|length)] | map(pprint) | join(", ")'

Related SO post: https://stackoverflow.com/a/78425192/617864