Failing to instlal arduino_cli on raspberry

high-tech-potato · 2021-12-17T15:34:26.876Z

Hey guys, the title says it all, I tried to install arduino_cli on my raspberry, but several things are going wrong.
First of all, when I do:

curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh

I get this:

Downloading https://downloads.arduino.cc/arduino-cli/arduino-cli_0.20.2_Linux_ARMv7.tar.gz                                                                                                                                                             Mv7.tar.gz
An existing arduino-cli was found at . Please prepend "/home/pi/bin" to your $PATH or remove the existing one.                                                                                                                                                             TH or remove the existing one.
arduino-cli  Version: 0.20.2 Commit: 13783819 Date: 2021-12-09T13:32:05Z installed successfully in /home/pi/bin

That line in the middle there is weird, becouse this is an entirely clean and new install of ubuntu for raspberry, and also its found at... nothing? but in the end it says it installed succesfully, so I thought what the h. but when I tried to simply do

arduino_cli --version

it said:

-bash: arduino-cli: command not found

so I decided to do what it suggested by adding to the path like so:

PATH=$PATH:~/home/pi/bin

But the problem persists.
I also tried installing it via snap following their website: Install Arduino CLI on Raspberry Pi using the Snap Store | Snapcraft

But no luck there either.

Anyone here have a clue whats going on, or should I try my luck in a more raspberry focussed forum?
Thanks in advance

ptillisch · 2021-12-17T16:43:42.256Z

high-tech-potato:

An existing arduino-cli was found at .

Thanks for your report @high-tech-potato!

I spotted the problem here:
https://github.com/arduino/arduino-cli/blob/d458040fea6f8d6148acad1bc0e3a0e2e8d8b27d/install.sh#L190

  EXECUTABLE_PATH="$(command -v $PROJECT_NAME)"
  if [ "$?" = "1" ]; then

The exit status of command when the command was not found turns out to be shell dependent. On Bash it is 1, but in POSIX sh, it is instead 127. So this conditional is not evaluating as true in the case where the arduino-cli command was not found.

I'll get this bug fixed ASAP.
For now, please just ignore this message. It is only a convenience feature. If you got to this point in the installation then it was successful and you now have Arduino CLI on your machine.

high-tech-potato:

when I tried to simply do
arduino_cli --version
it said:
-bash: arduino-cli: command not found

That is because it is not in your path. If you specify the path to the executable:

/home/pi/bin/arduino-cli --version

then you will not get that "command not found" error.

high-tech-potato:

I decided to do what it suggested by adding to the path like so:
PATH=$PATH:~/home/pi/bin

You messed up the path by adding that ~ prefix.

Arduino CLI was installed at /home/pi/bin. ~ is an alias for /home/pi when you are logged in as the pi user, so the path you specified was /home/pi/home/pi/bin, which does not contain arduino-cli (and likely doesn't even exist).

high-tech-potato:

I also tried installing it via snap following their website: Install Arduino CLI on Raspberry Pi using the Snap Store | Snapcraft

But no luck there either.

The Snap package is not officially maintained by Arduino, but you are welcome to share details about that failure if you want assistance with it.

high-tech-potato:

should I try my luck in a more raspberry focussed forum?

I think you are in good hands here.

ptillisch · 2021-12-17T20:04:17.994Z

high-tech-potato:

An existing arduino-cli was found at .

I have submitted a proposed fix for this bug:

github.com/arduino/tooling-project-assets

Fix install script's check for previous installation

arduino:main ← per1234:fix-install-script-path-suggestion

opened 08:00PM - 17 Dec 21 UTC

per1234

+81 -6

The "template" installation script stored in this repository checks for an exist…ing installation in the `PATH` in order to provide appropriate advice to the user about adding the installation to their their `PATH` environment variable. This check is done using `command -v`. It turns out that the exit status is shell dependent in the event the command is not found, so that it might be either `1` or `127` depending on the user's system. The script previously assumed that the exit status would be `1` when the command was not found in `PATH`, which resulted in spurious advice under these conditions: https://github.com/arduino/tooling-project-assets/runs/4556007479?check_suite_focus=true#step:4:13 ``` An existing arduino-lint was found at . Please prepend "/home/runner/work/tooling-project-assets/tooling-project-assets/bin" to your $PATH or remove the existing one. ``` It seems safest to fix this by inverting the logic so that the advice about an existing installation in `PATH` is only printed when one was found. --- Originally reported at https://forum.arduino.cc/t/failing-to-instlal-arduino-cli-on-raspberry/936871

Will need to wait until next week for approval and deployment because it is already the weekend in Italy.

high-tech-potato · 2021-12-20T08:26:04.304Z

Thanks for the reply, you where correct, it was the ~ that was the mistake, always the small mistakes that trip us up.
But glad I was able to bring attention to an actual bug to.

ptillisch · 2021-12-20T15:51:13.137Z

The bug is now fixed in the Arduino CLI installation script:

github.com/arduino/arduino-cli

Fix install script's check for previous installation

arduino:master ← per1234:fix-install-script

opened 02:59PM - 20 Dec 21 UTC

per1234

+6 -6

**Please check if the PR fulfills these requirements** - [x] The PR has no du…plicates (please search among the [Pull Requests](https://github.com/arduino/arduino-cli/pulls) before creating one) - [x] The PR follows [our contributing guidelines](https://arduino.github.io/arduino-cli/latest/CONTRIBUTING/#pull-requests) - [ ] Tests for the changes have been added (for bug fixes / features) - [ ] Docs have been added / updated (for bug fixes / features) - [ ] `UPGRADING.md` has been updated with a migration guide (for breaking changes) * **What kind of change does this PR introduce?** Infrastructure fix. - **What is the current behavior?** The installation script checks for an existing installation in the PATH in order to provide appropriate advice to the user about adding the installation to their their PATH environment variable. This check is done using `command -v`. It turns out that the exit status is shell dependent in the event the command is not found, so that it might be either 1 or 127 depending on the user's system. The script previously assumed that the exit status would be 1 when the command was not found in PATH, which resulted in spurious advice under these conditions: ``` An existing arduino-cli was found at . Please prepend "/home/foo/arduino-cli/bin" to your $PATH or remove the existing one. ``` [example](https://github.com/arduino/tooling-project-assets/runs/4556007479?check_suite_focus=true#step:4:13) * **What is the new behavior?** Previous installation check's logic is inverted so that the advice about an existing installation in PATH is only printed when one was found, making it only dependent on exit status 0. - **Does this PR introduce a breaking change, and is [titled accordingly](https://arduino.github.io/arduino-cli/latest/CONTRIBUTING/#breaking)?**  No breaking change. * **Other information**: --- See upstream commits for more atomic breakdown of changes: https://github.com/arduino/tooling-project-assets/pull/189 Checks for proper behavior of this aspect have been added for the parent: https://github.com/arduino/tooling-project-assets/actions/runs/1601562939 --- Originally reported at https://forum.arduino.cc/t/failing-to-instlal-arduino-cli-on-raspberry/936871

system · 2022-06-18T15:51:58.117Z

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