feature: show temperature, power, fan sensors

[robjtede]

Not sure how difficult this would be.
Can't seem to find a built in way of doing it.

[rgcr]

Good idea, I think it should be easy

[pbnj]

@rgcr - I've done some research and I can't seem to find any evidence that this is possible natively.

The closest thing I found were a few third-party apps and one ruby app (iStats) that leverages this C project.

Either way, seems like you would need to rely on third-party dependencies to achieve this.

[rgcr]

Yea, I think it is more difficult than I had expected.
We can know the fan speed running sudo spindump 1 1 -nofile -stdout | grep -i 'fan speed'
I'll keep looking for information about how to do it natively, there must be something.

[paxperscientiam]

@rgcr If you'd like an average of three samples:

a=($(sudo powermetrics -s smc -n 3 -i 200 |grep -i 'fan' | grep -Eo '[0-9]+'))
echo $'('$(IFS='+';echo "${a[*]// /+}";IFS=$' \t\n')$')/3' | bc
# OR math like this without bc:
echo $(( ($(IFS='+';echo "${a[*]// /+}";IFS=$' \t\n')) / 3))

For a single measurement:

sudo powermetrics -s smc -n 1 -i 200 |grep -i 'fan' | grep -Eo '[0-9]+'

I can make a PR if you like this approach, but let me know which you prefer.

EDIT: One caveat, it seems that both powermetrics and sysctl are limited when running off of battery power.

EDIT2: Third way (single value)

sudo powermetrics -s smc -n 1 -i 200 -f plist | plutil -extract 'smc.fan' xml1 -o - - | plutil -p -

[bensleveritt]

Thanks to @paxperscientiam we have fan speed, waiting to be released.

As this issue has been around a long time, I'll close for now. If we find a way to do the other items, we'll open issues/PRs for them separately

[paxperscientiam]

@bensleveritt awesome!!