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medusa-store/www/apps/book/app/advanced-development/custom-cli-scripts/page.mdx
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export const metadata = {
title: `${pageNumber} Custom CLI Scripts`,
}
# {metadata.title}
In this chapter, you'll learn how create and execute custom scripts from Medusa's CLI tool.
## What is a Custom CLI Script?
A custom CLI script is a function to execute through Medusa's CLI tool. This is useful when creating custom Medusa tooling to run as a CLI tool.
---
## How to Create a Custom CLI Script?
To create a custom CLI script, create a TypeScript or JavaScript file under the `src/scripts` directory. The file must default export a function.
For example, create the file `src/scripts/my-script.ts` with the following content:
```ts title="src/scripts/my-script.ts"
import { ExecArgs, IProductModuleService } from "@medusajs/types"
import { ModuleRegistrationName } from "@medusajs/utils"
export default async function myScript({ container }: ExecArgs) {
const productModuleService: IProductModuleService = container.resolve(
ModuleRegistrationName.PRODUCT
)
const [, count] = await productModuleService.listAndCount()
console.log(`You have ${count} product(s)`)
}
```
The function receives as a parameter an object having a `container` property, which is an instance of the Medusa Container. Use it to resolve resources in your Medusa application.
---
## How to Run Custom CLI Script?
To run the custom CLI script, run the Medusa CLI's `exec` command:
```bash npm2yarn
npx medusa exec ./src/scripts/my-script.ts
```
---
## Custom CLI Script Arguments
Your script can accept arguments from the command line. Arguments are passed to the function's object parameter in the `args` property.
For example:
```ts
import { ExecArgs } from "@medusajs/types"
export default async function myScript({ args }: ExecArgs) {
console.log(`The arguments you passed: ${args}`)
}
```
Then, pass the arguments in the `exec` command after the file path:
```bash npm2yarn
npx medusa exec ./src/scripts/my-script.ts arg1 arg2
```