Shell Skill

Write shell scripts as small, explicit helper scripts. Prefer boring command wrappers that are easy to read in one pass.

Core Rules

• Use #!/usr/bin/env bash.
• Use set -Eeuo pipefail.
• Keep scripts simple and direct.
• Do not add clever shell machinery unless it is clearly needed.
• Do not add defaults for required env vars.
• Do not duplicate variable definitions across env files.
• Do not introduce script arguments when the value already exists in env.
• Do not hide behavior behind generic helper layers.
• Do not print secrets.
• Run bash -n and shellcheck after edits.

Env Variables