# \`vcgencmd\` not available in balenalib/raspberrypi4-64-node:10-stretch-run ? **URL:** \ **Category:** Product support\ **Created:** [September 3, 2020, 12:24pm UTC](https://forums.balena.io/t/vcgencmd-not-available-in-balenalib-raspberrypi4-64-node-10-stretch-run/182461 "2020-09-03T12:24:35Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![esbenvb](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/esbenvb/32/4429_2.png) [@esbenvb](https://forums.balena.io/u/esbenvb)\ **Post date:** [September 3, 2020, 12:24pm UTC](https://forums.balena.io/t/vcgencmd-not-available-in-balenalib-raspberrypi4-64-node-10-stretch-run/182461/1 "2020-09-03T12:24:35Z")
I have a node.js app where I need to run the `vcgencmd`. In this forum I could see that others had luck with getting node.js using `balenalib/raspberrypi3-node:10-stretch-run image` in `Dockerfile` I’m actually using a `Dockerfile.template` like this: ```auto FROM balenalib/%%BALENA_MACHINE_NAME%%-node:10-stretch-run ``` This works great for me on my RPi3. However, when I create an app that has RPi4 as device type, and push to that app, it will pull the image `balenalib/raspberrypi4-64-node:10-stretch-run` and for some reason, running `vcgencmd` inside that container will give us a `command not found` error. How can it be that the same image behaves differently for RPi 3 and 4? Also, I discovered, that if I simply hardcode `FROM balenalib/raspberrypi3-node:10-stretch-run image` in my `Dockerfile` instead of using a template, it works! I can run `vcgencmd` on both the RPi 3 and 4, using the RPi3 image. How can that be? For now, I could just hardcode the RPi 3 image for both device types, and cross my finger that it will keep working, but I don’t want to rely on “hacks” in my production environment, unless I understand the issue and the reason for the hack makes sense. ---
**Author:** ![mbalamat](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/mbalamat/32/1245_2.png) [@mbalamat](https://forums.balena.io/u/mbalamat)\ **Post date:** [September 3, 2020, 1:41pm UTC](https://forums.balena.io/t/vcgencmd-not-available-in-balenalib-raspberrypi4-64-node-10-stretch-run/182461/4 "2020-09-03T13:41:24Z")
Hello, the images that you refer to above are not exactly the same, the raspberrypi4-64 one is a 64bit image and it doesn’t have the `vcgencmd` command. By hardcoding the image to `balenalib/raspberrypi3-node:10-stretch-run` you basically say that you want to run a 32bit container which has the `vcgencmd` which is a 32bit binary. For the support of such binaries as `vcgencmd` there is an issue in raspberrypi/firmware [https://github.com/raspberrypi/firmware/issues/1118](https://github.com/raspberrypi/firmware/issues/1118) that might provide you with more context. ---
**Author:** ![mbalamat](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/mbalamat/32/1245_2.png) [@mbalamat](https://forums.balena.io/u/mbalamat)\ **Post date:** [September 3, 2020, 1:46pm UTC](https://forums.balena.io/t/vcgencmd-not-available-in-balenalib-raspberrypi4-64-node-10-stretch-run/182461/5 "2020-09-03T13:46:48Z")
In general even in some of our projects that might use videocore and 32bit specific binaries we do the same trick, see here [https://github.com/balenalabs/balena-cam/tree/master/balena-cam](https://github.com/balenalabs/balena-cam/tree/master/balena-cam) the structure of the repo, we have a Dockerfile.template and a Dockerfile.aarch64 which is essentially the same as the template one but it uses a specific RPi3 image and is targeting Pi4s. ---
**Author:** ![esbenvb](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/esbenvb/32/4429_2.png) [@esbenvb](https://forums.balena.io/u/esbenvb)\ **Post date:** [September 3, 2020, 1:55pm UTC](https://forums.balena.io/t/vcgencmd-not-available-in-balenalib-raspberrypi4-64-node-10-stretch-run/182461/7 "2020-09-03T13:55:59Z")
OK thanks for your response. So it should be OK to use rpi3 images on an rpi4? I don’t care about 32/64 bits if it just works. However, I found out that this project does not work if I try to run the rpi3 version on rpi4 hardware > **[balenablocks/browser](https://github.com/balenablocks/browser)** > > A drop-in web browser block. Contribute to balenablocks/browser development by creating an account on GitHub. ---
**Author:** ![mbalamat](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/mbalamat/32/1245_2.png) [@mbalamat](https://forums.balena.io/u/mbalamat)\ **Post date:** [September 3, 2020, 2:11pm UTC](https://forums.balena.io/t/vcgencmd-not-available-in-balenalib-raspberrypi4-64-node-10-stretch-run/182461/8 "2020-09-03T14:11:10Z")
> So it should be OK to use rpi3 images on an rpi4? I don’t care about 32/64 bits if it just works. If your app requires a specific binary and the binary is there and it works, then yes no problem at all. About the browser project, from briefly checking it, I think it uses a 32bit container and it should work. If you think you’ve found an issue feel free to create a github issue on the project with your findings.