permission denied while trying to install vue/cli
It seem's that you do not have the required privileges to install globally. You could either try installing with sudo or (recommended) move NPM's default directory to one which you have read/write permissions on:
Create directory in your home directory, say
~/.npm-global.run
npm config set prefix '~/.npm-global'Update your
PATH:export PATH=~/.npm-global/bin:$PATH
https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally
Notice that while you could probably just use sudo, this is highly discouraged. It even says so in the error output you posted:
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator (though this is not recommended).
You need to have permission by writing sudo at the first of your command
sudo npm i @vue/cli -gUpdated
Or as Philip said it would be better than my answer
Create a directory in your home directory, say
~/.npm-global.run npm config set prefix
~/.npm-globalUpdate your PATH:
export PATH=~/.npm-global/bin:$PATH