如何在Angular CLI中配置默认启用dry run模式？

Absolutely! Most tools, scripts, and platforms that support a dry-run (or "simulate") mode let you configure it as the default behavior—this is a fantastic setup for exactly the reasons you mentioned.

How to set default dry-run mode #

The exact method depends on the tool/script you're working with, but here are the most common approaches:

• Configuration file: Add a dedicated setting (e.g., dry_run: true in a YAML/JSON config, or DEFAULT_DRY_RUN = True in a Python config module). Your tool will check this value on startup and default to dry-run mode unless explicitly overridden.
• Shell aliases: For CLI tools, create an alias that automatically includes the dry-run flag. For example:

  alias mydeploy='mydeploy --dry-run'
  

  This way, every time you run mydeploy, it uses dry-run mode—you can still run mydeploy --no-dry-run when you're ready for real execution.
• Environment variables: Set a persistent env var like export MYTOOL_DRY_RUN=true in your shell profile (e.g., .bashrc or .zshrc). Many tools will pick up this variable and default to dry-run mode.

Why this is such a great setup #

Your reasoning hits the nail on the head:

• Lower learning curve: New users (or even experienced ones testing new commands) can experiment freely without worrying about accidentally creating messy, hard-to-clean changes.
• Enforce safe practice: It forces everyone using the tool to validate the intended changes first with a dry run, reducing the risk of costly mistakes in production or live environments.
• Easy override: When you're confident the command is correct, you can simply pass a flag like --no-dry-run or temporarily unset the config/env var to run the real operation.

内容的提问来源于stack exchange，提问作者Urasquirrel