خطای npm ERR! code ENOTFOUND هنگام نصب angular

[آرش گودرزی]

سلام.
هنگام نصب angular/cli از این دستور استفاده کردم:

کد: [انتخاب]

sudo npm install -g @angular/cli

این خطا رو میده:

کد: [انتخاب]

npm ERR! code ENOTFOUND
npm ERR! errno ENOTFOUND
npm ERR! network request to https://registry.npmjs.org/opn failed, reason: getaddrinfo ENOTFOUND registry.npmjs.org registry.npmjs.org:443
npm ERR! network This is a problem related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly.  See: 'npm help config'

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/arash/.npm/_logs/2018-05-15T10_09_07_319Z-debug.log


[Silvio Dante]

احتمالات مختلفی هست.
شاید این لینک بتونه کمک‌تون کنه.