Angular ng命令未找到求助：已尝试多方案仍无法解决

Hey Calvin, let's break down how to fix this ng command issue—you're right that path configuration and dependency gaps are the main culprits here. Let's go through step-by-step fixes:

1. 先修复Angular CLI的依赖缺失问题 #

Looking at your npm list -g output, there are missing dependencies (opn@~5.3.0 and yargs-parser@^10.0.0) required by @angular/cli@6.0.1. This can prevent the CLI from registering the ng command properly. Let's reinstall the CLI to fix this:

# 全局卸载Angular CLI
npm uninstall -g @angular/cli

# 清理npm缓存（避免残留损坏的文件）
npm cache clean --force

# 重新全局安装指定版本的CLI（或者替换成最新稳定版，比如@latest）
npm install -g @angular/cli@6.0.1

2. 确认Windows环境变量Path的正确配置 #

Your global npm packages are installed in C:\Program Files\Git\usr\local\node_modules, but the actual ng executable lives in the bin directory at the same level as node_modules (i.e., C:\Program Files\Git\usr\local\bin). Here's what to do:

• Open Windows System Properties → Advanced → Environment Variables.
• In the System Variables section, find the Path variable and click "Edit".
• Add the full path C:\Program Files\Git\usr\local\bin to the list (make sure it's the bin folder, not the node_modules folder).
• Restart all open terminals (VSCode integrated terminal, Git Bash, Command Prompt) — environment variable changes only take effect in new terminal sessions.

3. 解决Git Bash中的路径与别名问题 #

Git Bash handles Windows paths differently, so let's fix the alias and PATH here:

修复别名（如果需要用别名的话） #

Your earlier alias failed because of unescaped spaces. Use one of these correct formats:

# 转义空格
alias ng="/c/Program\ Files/Git/usr/local/node_modules/@angular/cli/bin/ng"

# 或者用引号包裹路径
alias ng="'C:/Program Files/Git/usr/local/node_modules/@angular/cli/bin/ng'"

确保全局bin路径在Git Bash的PATH中 #

Run echo $PATH in Git Bash to check if /c/Program Files/Git/usr/local/bin is included. If not, add it temporarily (for the current session) with:

export PATH="$PATH:/c/Program\ Files/Git/usr/local/bin"

To make this permanent, add the above line to your ~/.bashrc or ~/.bash_profile file in Git Bash.

4. 验证修复效果 #

After completing the steps above, test the ng command in each terminal:

• Command Prompt: Run ng --version — it should display the Angular CLI version details.
• Git Bash: Run ng --version or which ng (should return the correct path to the ng executable).
• VSCode Integrated Terminal: Make sure it's using the updated environment (restart VSCode if needed) and run ng --version.

额外建议：使用Windows默认的npm全局路径 #

For better compatibility with Windows, consider switching your npm global prefix to the default Windows location instead of Git's directory. Run npm config get prefix to check your current prefix. If it's set to the Git path, change it with:

npm config set prefix "C:\Users\Calvin Swinnen\AppData\Roaming\npm"

Then add C:\Users\Calvin Swinnen\AppData\Roaming\npm to your System Path (this path is often already included by default).

内容的提问来源于stack exchange，提问作者Kelvijn