ptx2 / gymnasticon

Make obsolete and/or proprietary exercise bikes work with popular cycling training apps like Zwift, TrainerRoad, Rouvy and more.

Home Page:https://ptx2.net/posts/unbricking-a-bike-with-a-raspberry-pi

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CLI issues on iatest image (command not found)

barrettec777 opened this issue · comments

Hello!

I've deployed the image to my raspberry pi zero WH - and though gymnasticon is running, it seems like the CLI and or path settings may not be properly configured. Should it be working "out of the box"? When I type gymnasticon, I get

pi@gymnasticon:~ $ gymnasticon
-bash: gymnasticon: command not found

I've been able to change settings (e.g. --bike "peloton") by modifying the gymnasticon.service file, but I'm wondering if there's something else that I should change to get the CLI to properly work?

The executable for Gymnasticon lives within the folder /opt/gymnasticon/node/bin/, which is not part of the path, where the default shell searches for executables. The same applies also to node and npm, which are both installed in the same folder.

Therefore you have to manually add this folder to the path via:
export PATH=/opt/gymnasticon/node/bin/:$PATH

This will only be of effect during the lifetime of the Shell / SSH session. If you want to make this change permanent, add it to the end of the .profile file within the user's home directory.

E.g. via echo "export PATH=/opt/gymnasticon/node/bin/:\$PATH" >> /home/pi/.profile

Don't forget to restart the Shell / SSH session after making this permanent change, for it to take effect.

Great. Added that to my profile and can access the CLI now. I did have to run

# this gives cap_net_raw+eip to all node programs not just gymnasticon
sudo setcap cap_net_raw+eip $(eval readlink -f $(which node))

In order to run as an unprivileged user (pi).

commented

Nice catch @barrettec777. This will be the default in the next release thanks to @chriselsen.