---
name: write-script-bash
description: MUST use when writing Bash scripts.
---

## CLI Commands

Place scripts in a folder. After writing, tell the user they can run:
- `wmill script generate-metadata` - Generate .script.yaml and .lock files
- `wmill sync push` - Deploy to Windmill

Do NOT run these commands yourself. Instead, inform the user that they should run them.

Use `wmill resource-type list --schema` to discover available resource types.

# Bash

## Structure

Do not include `#!/bin/bash`. Arguments are obtained as positional parameters:

```bash
# Get arguments
var1="$1"
var2="$2"

echo "Processing $var1 and $var2"

# Return JSON by echoing to stdout
echo "{\"result\": \"$var1\", \"count\": $var2}"
```

**Important:**
- Do not include shebang (`#!/bin/bash`)
- Arguments are always strings
- Access with `$1`, `$2`, etc.

## Output

The script output is captured as the result. For structured data, output valid JSON:

```bash
name="$1"
count="$2"

# Output JSON result
cat << EOF
{
  "name": "$name",
  "count": $count,
  "timestamp": "$(date -Iseconds)"
}
EOF
```

## Environment Variables

Environment variables set in Windmill are available:

```bash
# Access environment variable
echo "Workspace: $WM_WORKSPACE"
echo "Job ID: $WM_JOB_ID"
```