I\'ve installed grunt using sudo npm install grunt and now I can\'t remove it.
I\'ve tried:
$ sudo npm uninstall grunt
Running the accepted solution's commands didn't work for me. Running which grunt would result in /usr/local/bin/grunt, but normal (or sudo) npm uninstall -g grunt-cli had no effect.
This is the command that finally worked for me:
sudo npm uninstall grunt-cli -g --prefix=/usr/local
Thanks to gengxuelei on github for the solution!