# Prevent permission errors at installation

{% hint style="warning" %}
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{% endhint %}

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Please check your agent type and version and read on or switch to the right documentation.
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{% endhint %}
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{% endtabs %}

## Prevent permission errors at installation

Depending on how you've installed Node.js on your system, you could encounter a permissions error **EACCES** similar to the following output.

{% hint style="info" %}
In this case, I got the error on a EC2 instance running on Ubuntu 10.04 with Node v8.10.0 and NPM v.3.5.2. But you can have this similar problem on another system and node version.
{% endhint %}

```bash
npm ERR! Linux 4.15.0-1021-aws
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "-g" "lumber-cli" "--save"
npm ERR! node v8.10.0
npm ERR! npm  v3.5.2
npm ERR! path /usr/local/lib
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access

npm ERR! Error: EACCES: permission denied, access '/usr/local/lib'
npm ERR!  { Error: EACCES: permission denied, access '/usr/local/lib'
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/usr/local/lib' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/ubuntu/npm-debug.log
```

The problem is because NPM does not have the **write access** to the directory that will contain the package you want to install (here `lumber-cli`).

To solve this issue, we recommend to override the default directory where your global NPM packages will be stored.

```bash
mkdir ~/.npm-global
```

Then, configure NPM to use this directory instead of the default one:

```bash
npm config set prefix '~/.npm-global'
```

Then, make the node executables accessible from your *PATH.* To do so, export the environment variable PATH by opening or creating the file `~/.profile` and add this line at the end:

{% code title="\~/.profile" %}

```bash
export PATH=~/.npm-global/bin:$PATH
```

{% endcode %}

Finally, reload the `~/.profile` file:

```bash
source ~/.profile
```

That's it, now you should be able to install lumber without any error 🎉

```bash
npm install -g lumber-cli
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.forestadmin.com/documentation/extra-help/setup/prevent-permission-errors-at-installation.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.