Agent Skills: Execute Shell Commands in Magento Environment

Execute Shell Commands in Magento Environment

This utility skill detects the Magento development environment and provides the appropriate command wrapper for executing shell commands.

Usage

Other skills should reference this skill when they need to execute commands in the Magento environment. The detected wrapper ensures commands run in the correct context (container or local).

Step 1: Detect Environment

Important: Execute this script from the Magento project root directory, or provide the path as an argument.

Run this detection once at the start of any skill that needs to execute shell commands:

<skill_path>/scripts/detect_env.sh [magento_root_path]

Where <skill_path> is the directory containing this SKILL.md file (e.g., .claude/skills/hyva-exec-shell-cmd).

The optional magento_root_path argument specifies the Magento installation directory. If omitted, the script uses the current working directory.

Output: warden, docker-magento, ddev, or local

Step 2: Apply Command Wrapper

Based on detected environment, wrap commands as follows:

| Environment | Command Wrapper | Description | |-------------|-----------------|-------------| | Warden | warden env exec -T php-fpm bash -c "<command>" | Docker environment managed by Warden | | docker-magento | bin/clinotty bash -c "<command>" | Mark Shust's docker-magento setup | | DDEV | ddev exec <command> | DDEV containerized environment | | Local | Run <command> directly | Native environment without containers |

Examples

Single command

# Warden
warden env exec -T php-fpm bash -c "bin/magento cache:clean"

# docker-magento
bin/clinotty bash -c "bin/magento cache:clean"

# DDEV
ddev exec bin/magento cache:clean

# Local
bin/magento cache:clean

Command with directory change

# Warden
warden env exec -T php-fpm bash -c "cd vendor/hyva-themes/magento2-default-theme/web/tailwind && npm run build"

# docker-magento
bin/clinotty bash -c "cd vendor/hyva-themes/magento2-default-theme/web/tailwind && npm run build"

# DDEV
ddev exec bash -c "vendor/hyva-themes/magento2-default-theme/web/tailwind && npm run build"

# Local
cd vendor/hyva-themes/magento2-default-theme/web/tailwind && npm run build

Commands That Do NOT Require Wrapping

Some commands run on the host system and should NOT be wrapped:

• composer commands (runs on host, not in container)
• git commands
• File operations on the host filesystem (ls, find, cp for files accessible from host)
• warden CLI commands
• ddev CLI commands

Integration Pattern

Skills that need to execute commands should:

1. Reference this skill: "Use the hyva-exec-shell-cmd skill to determine the command wrapper"
2. Detect environment once using Step 1
3. Store the wrapper pattern for use throughout the skill
4. Apply the wrapper to all container commands per Step 2

Running a Bundled Skill Script Inside the Environment

Some skills ship a helper script (e.g. a PHP script under scripts/) that must run through a PHP/Node interpreter. On a hardened host there is no local interpreter, and a skill installed at user level (~/.../skills/...) is not inside the project, so the container can't see it. Do not copy the script into the project tree: how files reach the container differs across environments (bind mounts, Mutagen, named volumes) and some paths are not synced at all (e.g. Warden serves var/, generated/, pub/static, pub/media from separate volumes, so a host-written file there never appears in the container).

Instead, stream the script into the interpreter over stdin — this is independent of the mount/sync strategy, needs no temp file, and needs no cleanup:

1. Detect the environment (Step 1) and resolve the wrapper (Step 2).

2. Containerized env — pipe the script to php /dev/stdin through the wrapper (use the non-TTY -T exec so stdin is forwarded). <skill_path> is the directory containing the calling skill's SKILL.md:

   # Warden
   cat "<skill_path>/scripts/<script>.php" | warden env exec -T php-fpm bash -c "php /dev/stdin [args]"
   
   # docker-magento
   cat "<skill_path>/scripts/<script>.php" | bin/clinotty bash -c "php /dev/stdin [args]"
   
   # DDEV
   cat "<skill_path>/scripts/<script>.php" | ddev exec bash -c "php /dev/stdin [args]"
   

   The script runs with the container's working directory at the project root, so a script that locates the project via getcwd() works unchanged. Capture stdout for the result.

   Script constraints for this method: the script must not also read from stdin (stdin carries the script itself), and must not rely on __FILE__/__DIR__ (it is /dev/stdin) — locate project files via getcwd() instead.

3. local env: the host has no interpreter (removed during hardening). Do not attempt to run the script directly — report that a containerized dev environment (or a local interpreter) is required for this step.