node.js - NPM install giving error installing express

Question

When I give command npm install express it throws following error. On ubuntu machine

gaurav@gaurav-Mini-Monster:~/TestScripts$ sudo npm install -g express
npm ERR! error installing express@3.3.3 Error: Unsupported
npm ERR! error installing express@3.3.3     at checkEngine (/usr/local/lib/node_modules/npm/lib/install.js:493:14)
npm ERR! error installing express@3.3.3     at Array.0 (/usr/local/lib/node_modules/npm/node_modules/slide/lib/bind-actor.js:15:8)
npm ERR! error installing express@3.3.3     at LOOP (/usr/local/lib/node_modules/npm/node_modules/slide/lib/chain.js:15:13)
npm ERR! error installing express@3.3.3     at chain (/usr/local/lib/node_modules/npm/node_modules/slide/lib/chain.js:20:4)
npm ERR! error installing express@3.3.3     at installOne_ (/usr/local/lib/node_modules/npm/lib/install.js:470:3)
npm ERR! error installing express@3.3.3     at installOne (/usr/local/lib/node_modules/npm/lib/install.js:411:3)
npm ERR! error installing express@3.3.3     at /usr/local/lib/node_modules/npm/lib/install.js:347:9
npm ERR! error installing express@3.3.3     at /usr/local/lib/node_modules/npm/node_modules/slide/lib/async-map.js:54:35
npm ERR! error installing express@3.3.3     at Array.forEach (native)
npm ERR! error installing express@3.3.3     at /usr/local/lib/node_modules/npm/node_modules/slide/lib/async-map.js:54:11
npm ERR! error rolling back express@3.3.3 Error: UNKNOWN, Unknown error '/usr/local/lib/node_modules/express'
npm ERR! Unsupported
npm ERR! Not compatible with your version of node/npm: connect@2.8.3
npm ERR! Required: {"node":">= 0.8.0"}
npm ERR! Actual:   {"npm":"1.0.106","node":"0.5.11-pre"}
npm ERR! 
npm ERR! System Linux 3.2.0-48-generic-pae
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "express"
npm ERR! cwd /home/gaurav/TestScripts
npm ERR! node -v v0.5.11-pre
npm ERR! npm -v 1.0.106
npm ERR! code ENOTSUP
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /home/gaurav/TestScripts/npm-debug.log
npm not ok

I also tried

sudo npm install express
npm install -g express
sudo npm install -g express

Nothing works.

Answer 1

Node is so easy to install manually. I like doing it this way too because it's really easy to switch versions.

This is also great because you don't need to add some external package repository to apt, and you don't have to wait for those repositories to update when node releases a new version. You can get updates as soon as they're released.

# make a `~/.nodes/ folder
mkdir -p ~/.nodes && cd ~/.nodes

# download the binaries from nodejs.org
# in this case, here's the linux version
curl -O http://nodejs.org/dist/v0.10.12/node-v0.10.12-linux-x64.tar.gz

# extract
tar -xzf node-v0.10.12-linux-x64.tar.gz

# rename folder to 0.10.12
mv node-v0.10.12-linux-x64 0.10.12

# create a `current` symlink
ln -s 0.10.12 current

# prepend ~/.nodes/bin to your path
# you'll want to save this in ~/.bashrc or ~/.zshrc or something
export PATH="~/.nodes/current/bin:$PATH"

# cleanup
rm ~/.nodes/node-v0.10.12-linux-x64.tar.gz

---

The best part about this is you can repeat the pattern for any other version of node, change the current symlink at any time to switch which version you're running, and you're good to go

% node --version
v0.10.12

% npm --version
1.2.32

# switch versions to (e.g.) 0.10.5
% cd ~/.nodes && rm current && ln -s 0.10.5 current

% node --version
v0.10.5

% npm --version
1.2.18

---

Additional pointers when writing executable scripts

Make an executable file

% touch ~/somefile && chmod +x ~/someifle && nano ~/somefile

File contents

#!/usr/bin/env node
console.log(process.version);

Run it

% ./somefile
v0.10.12