[node.js] nodemon not working: -bash: nodemon: command not found

I'm on a Mac running El Capitan. I have node v5.6.0 and npm v3.6.0. When I try to run nodemon, I get:

-bash: nodemon: command not found

I thought this may mean that I didn't have nodemon installed, so when I tried to install it using...

sudo npm install -g nodemon

...I get this:

npm ERR! Darwin 15.2.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g"     "nodemon"
npm ERR! node v5.6.0
npm ERR! npm  v3.6.0
npm ERR! path /usr/local/bin/nodemon
npm ERR! code EEXIST

npm ERR! Refusing to delete /usr/local/bin/nodemon: ../lib/node_modules/nodemon/nodemon.js symlink target is not controlled by         npm /usr/local
npm ERR! File exists: /usr/local/bin/nodemon
npm ERR! Move it away, and try again.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/brianeoneill/npm-debug.log

If it makes a difference, I'm trying to run nodemon on a project that uses Express v4.13.1

Thanks for any help you can offer!

This question is related to node.js bash express npm nodemon

The answer is

I tried the following, and none worked:

npm uninstall nodemon

sudo npm uninstall -g nodemon

What did work was:

sudo npm install -g --force nodemon

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