Install

At this time, the installation process expects you to have a rooted thermostat and familiarity with the Linux command line.

Get root

You'll need a rooted Nest with SSH access. Any of the following methods should work.

Download & Install

I'll assume retherm will be placed under /retherm/, but choose whatever directory you like.

Go to the Releases page on Github and copy the latest download link.

If you prefer to build ReTherm yourself, details are in the project README.

Make directory for ReTherm if it doesn't already exist
```
mkdir /retherm
```

Download latest build

# Replace download link with one copied from releases page.
# Make sure retherm is stopped before replacing (when updating, not installing first time).
curl -o /retherm/retherm https://github.com/jiggak/retherm/releases/download/v1.0.0/retherm
chmod +x /retherm/retherm

Create /etc/init.d/retherm with contents of init.sh

curl -o /etc/init.d/retherm https://raw.githubusercontent.com/jiggak/retherm/refs/heads/main/init.sh
chmod +x /etc/init.d/retherm

Stop Nest app /etc/init.d/nestlabs stop
Start ReTherm /etc/init.d/retherm start

ReTherm will run until the device reboots; the default Nest app will start the next time the device reboots.

Currently ReTherm doesn't have an interface for configuring Wifi. It's crutial the Nest app starts at boot so that you maintain some means to set network settings (i.e. SSH access).

Logging to syslogd

Optionally, ReTherm can output logs to syslogd. Log messages will be written to /var/log/messages.

# INFO can be one of: TRACE, DEBUG, INFO, ERROR
retherm --syslog INFO

This opens up the option to forwarding log messages to a log collector by appending -R 192.168.1.42:514 -L to /etc/syslogd.options where "192.168.1.42" is the address of your log server.

-O /var/log/messages -s 384 -b 15 -u -R 192.168.1.42:514 -L