Ahoana no ahafahako manampy npm (node.js manager manager) amin'ny PATH?

Nametraka node.js toy izao aho:

cd /usr/local/bin/
git clone --depth 1 http://github.com/joyent/node.git
cd node
git checkout origin/v0.4 # optional.  Note that master is unstable.
export JOBS=2 # optional, sets number of parallel commands.
mkdir ~/local
./configure --prefix=$HOME/local/node
make
make install
echo 'export PATH=$HOME/local/node/bin:$PATH' >> ~/.profile
source ~/.profile

Avy eo novonoiko ity curl http://npmjs.org/install.sh | sh hametraka npm. Taorian'ny nivoahako sy nidirako indray dia tsy fantatra ny baiko npm:

[/usr/local/bin/node]# npm install now
-bash: npm: command not found

Inona no tokony ampiako amin'ny PATH hiasa npm?