# Exec node fails with error:127 ... any ideas why?
**URL:** https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675
**Category:** General
**Tags:** docker
**Created:** [19 February 2024 17:17 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675 "2024-02-19T17:17:05Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@questuk](https://discourse.nodered.org/u/questuk)
#### Post date: [19 February 2024 17:17 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/1 "2024-02-19T17:17:05Z")
Hi,
I am running Node-RED in Docker.
I am sending text to the Exec node to enable speech output.
Text is `"Speaker_in_PC_Room"` and the command is` espeak -s 130 -k3`
But I get the errors on the image below.
Is it that it doesn't know how to process **bash** or is it that it can't access Espeak software within Docker ?
I know it's a long shot on here but I am not certain which one is at fault.
Thanks
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [19 February 2024 17:22 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/2 "2024-02-19T17:22:32Z")
> [@questuk](#):
>
> Is it that it doesn't know how to process **bash** or is it that it can't access Espeak software within Docker
It looks like bash cannot find `espeak`.
are you 100% certain it is installed inside the container?
perhaps you need to supply the full path to espeak e.g. `/some/path/to/espeak -s 130 ...` (of course only you will know where that is by looking inside the container)
---
### Author:  [@questuk](https://discourse.nodered.org/u/questuk)
#### Post date: [19 February 2024 17:46 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/3 "2024-02-19T17:46:02Z")
Hi,
I don't think espeak is installed within Docker, I have tried to add it via a terminal but I get an error.
First i tried to update and got ... `apk update ERROR: Unable to lock database: Permission denied`
I have been unable to find out how to get permission as I have installed Node-RED from compose.yaml file.
I believe i am correct in accessing it via terminal as below ?
If I get past this I may be able to do `apk add espeak`
Thanks for your help.
---
### Author:  [@meeki007](https://discourse.nodered.org/u/meeki007)
#### Post date: [19 February 2024 17:59 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/4 "2024-02-19T17:59:39Z")
This will get you into the container as a root user
```auto
$ docker exec -it --user=root gb-node-red-1 /bin/sh
```
Then try to install it
```auto
$ apk add espeak
```
---
### Author:  [@questuk](https://discourse.nodered.org/u/questuk)
#### Post date: [19 February 2024 18:06 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/5 "2024-02-19T18:06:45Z")
I think I have installed it ... i used
```auto
docker exec -it --user root gb-node-red-1 sh
/usr/src/node-red # apk add espeak
```
Not sure if this is the correct place ?
Then i tried **espeak "hello, world"**
and then in the terminal i got line and lines and like this ...
```auto
ALSA lib confmisc.c:855:(parse_card) cannot find card '0'
ALSA lib conf.c:5181:(_snd_config_evaluate) function snd_func_card_inum returned error: No such file or directory
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5181:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating name
ALSA lib conf.c:5181:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5704:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2666:(snd_pcm_open_noupdate) Unknown PCM sysdefault
ALSA lib confmisc.c:855:(parse_card) cannot find card '0'
```
Perhaps Alpine linux does not have sound driver or does it need configuring ?
Thanks
---
### Author:  [@meeki007](https://discourse.nodered.org/u/meeki007)
#### Post date: [19 February 2024 18:17 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/6 "2024-02-19T18:17:44Z")
oh-boy ... I did not know what espeak was . I just know how to install things to a node-red docker image.
Ive added system devices to docker before. Look at this documentation:
[https://docs.docker.com/engine/reference/commandline/container\_run/#device](https://docs.docker.com/engine/reference/commandline/container_run/#device)
You need to add a sound device probably. Sound? so If it was me I would run my nodered docker container like this:
```auto
docker run -d \
...your options....
--device /dev/snd:/dev/snd \
gb-node-red-1
```
this is an example ... might work but you need to do more reading unless somone else has done espeak before...
also I dont use compose.yaml for my docker needs. I can read it. Then I make my own one liner for running command in terminal. You will need to add the **--device** option to your yaml file.
NOTE: this assumes your running docker on a unbuntu / debian based distro and not windows or mac.
---
### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [19 February 2024 18:21 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/7 "2024-02-19T18:21:34Z")
Do you need to use docker? Often life is much easier without it.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [19 May 2024 18:21 UTC](https://discourse.nodered.org/t/exec-node-fails-with-error-127-any-ideas-why/85675/8 "2024-05-19T18:21:35Z")
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