通過這個指令卸載會報錯，是不是沒有cd到他的安裝目錄，主要是不清楚hexo安裝在什么地方。

:~ vivid$ npm uninstall hexo-cli
npm WARN saveError ENOENT: no such file or directory, open '/Users/vivid/package.json'
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN enoent ENOENT: no such file or directory, open '/Users/vivid/package.json'
npm WARN vivid No description
npm WARN vivid No repository field.
npm WARN vivid No README data
npm WARN vivid No license field.

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