I was trying to upgrade my blogs ghost version to 0.9(which btw has some cool features) and I stumbled upon an issue when trying to upgrade the packages.
Every time I run
sudo npm install --production ``` on my server, I get the following error:
npm WARN cannot run in wd email@example.com node core/server/utils/npm/preinstall.js (wd=/var/www/ghost)
On digging a bit deep, I found that NPM tries to downgrade its privileges when it runs scripts. That downgrading the privileges causes this error. **TL;DR:** So the workarounds are: 1. Run `sudo npm run postinstall` manually. OR 2. Run `npm install --unsafe-perm` OR 3. Run `sudo chown -R my_name /usr/local` References: 1.[Fixing npm permissions](https://docs.npmjs.com/getting-started/fixing-npm-permissions) 2.[User](https://docs.npmjs.com/misc/scripts#user)
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