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[SOLVED] installing Node.js: npm not found: Mac OS X Installer (.pkg) Universal

i wanted to test out Node.js, so i downloaded the Mac OS X Installer (.pkg) Universal (specifically, node-v0.12.7), n the installation completed fine, n it said that node n npm were installed here:


and PATH contains that path:
echo $PATH


but when i try updating npm:
sudo npm update -g npm

i get:
sudo: npm: command not found

and "ls" confirms that it isn't installed:
sudo ls -la /usr/local/bin

lrwxr-xr-x   1 nick  admin        32 May  2  2014 mvnyjp -> ../Cellar/maven/3.2.1/bin/mvnyjp
-rwxr-xr-x   1 root  admin  36046288 Jul 10 00:51 node
lrwxr-xr-x   1 root  admin        45 May 12 15:40 protractor -> ../lib/node_modules/protractor/bin/protractor
-rwxr--r--   1 nick  staff      2757 Mar  2 12:11 pstorm

Chris Barber reports that /usr/local/bin/npm should be a symlink to /usr/local/lib/node_modules/npm/bin/npm-cli.js

i can run npm through node:
node /usr/local/lib/node_modules/npm/bin/npm-cli.js -v


"ls"-ing "lib":
ls -la /usr/local/lib

shows a curious ownership/permission setting for "node_modules" directory:
drwxr-xr-x   6 24561  wheel     204 May 18 09:57 node_modules

to fix this, the solution seems to be as simple as creating that symlink:
sudo ln -s /usr/local/lib/node_modules/npm/bin/npm-cli.js /usr/local/bin/npm

i tried updating npm again:
sudo npm update -g npm

this time it outputs:
/usr/local/bin/npm -> /usr/local/lib/node_modules/npm/bin/npm-cli.js
npm@2.13.0 /usr/local/lib/node_modules/npm