Develop Reference

-bash express: command not found

I am getting a very odd error trying to install the express-generator with and without sudo.
I need to run: npm install express-generator -g and then express --ejs name_here but when executing the first command, I get the following error:
npm ERR! Darwin 15.2.0
npm ERR! argv "node" "/usr/local/bin/npm" "install" "express-generator" "-g"
npm ERR! node v0.12.7
npm ERR! npm v2.11.3
npm ERR! path /Users/[name]/.npm/lib/node_modules/express-generator/LICENSE
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! Error: EACCES, unlink '/Users/[name]/.npm/lib/node_modules/express-generator/LICENSE'
npm ERR! at Error (native)
npm ERR! { [Error: EACCES, unlink '/Users/[name]/.npm/lib/node_modules/express-generator/LICENSE']
npm ERR! errno: -13,
npm ERR! code: 'EACCES',
npm ERR! path: '/Users/[name]/.npm/lib/node_modules/express-generator/LICENSE' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! error rolling back Error: EACCES, unlink '/Users/[name]/.npm/lib/node_modules/express-generator/LICENSE'
npm ERR! error rolling back at Error (native)
npm ERR! error rolling back { [Error: EACCES, unlink '/Users/[name]/.npm/lib/node_modules/express-generator/LICENSE']
npm ERR! error rolling back errno: -13,
npm ERR! error rolling back code: 'EACCES',
npm ERR! error rolling back path: '/Users/[name]/.npm/lib/node_modules/express-generator/LICENSE' }
npm ERR! Please include the following file with any support request:
npm ERR! /Users/[name]/Documents/Projects/MEAN Stack Tutorial/npm-debug.log
After trying sudo npm install express-generator -g I get this:
/Users/[name]/.npm/bin/express -> /Users/[name]/.npm/lib/node_modules/express-generator/bin/express
express-generator#4.13.1 /Users/[name]/.npm/lib/node_modules/express-generator
├── sorted-object#1.0.0
├── commander#2.7.1 (graceful-readlink#1.0.1)
└── mkdirp#0.5.1 (minimist#0.0.8)
Then running express --ejs name_here returns -bash: express: command not found
Is there a way I can solve this issue? The other questions on SO seem to have fixed the issue by trying sudo but not for me.

Try to use an express command with a full path: /Users/[name]/.npm/bin/express or sudo /Users/[name]/.npm/bin/express.
Looks like PATH variable wasn't set after installation. (https://en.wikipedia.org/wiki/PATH_(variable))

Node.JS impossible to install ionic

I've recently installed Node.JS for ionic framework. But when i type on the terminal :
npm install -g cordova ionic
I've got this error :
npm ERR! Darwin 14.0.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "cordova" "ionic"
npm ERR! node v4.0.0
npm ERR! npm v2.14.2
npm ERR! path /usr/local/lib/node_modules/cordova
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall rmdir
npm ERR! Error: EACCES: permission denied, rmdir '/usr/local/lib/node_modules/cordova'
npm ERR! at Error (native)
npm ERR! { [Error: EACCES: permission denied, rmdir '/usr/local/lib/node_modules/cordova']
npm ERR! errno: -13,
npm ERR! code: 'EACCES',
npm ERR! syscall: 'rmdir',
npm ERR! path: '/usr/local/lib/node_modules/cordova' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! error rolling back Error: EACCES: permission denied, rmdir '/usr/local/lib/node_modules/cordova'
npm ERR! error rolling back at Error (native)
npm ERR! error rolling back { [Error: EACCES: permission denied, rmdir '/usr/local/lib/node_modules/cordova']
npm ERR! error rolling back errno: -13,
npm ERR! error rolling back code: 'EACCES',
npm ERR! error rolling back syscall: 'rmdir',
npm ERR! error rolling back path: '/usr/local/lib/node_modules/cordova' }
npm ERR! Please include the following file with any support request:
npm ERR! /Users/TARRADOUJL/npm-debug.log
During the installation of Node.JS I need to make sure that /usr/local/bin is in your $PATH.
And when i type
$PATH
The results is :
-bash: /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin: No such file or directory
I'm not a "Pro" with the line commands.. but i think i need to change my $PATH for install ionic right ? In this case ? How can i do please?

Try sudo npm install -g cordova. You may have to input your password.

I try to install express-generator, but I receive a curious error message

I've searched every SO question even closely related and everything I've tried hasn't worked. Any ideas? I can post the debug log, but it is quite long and I can't get it to format correctly. Let me know if this would be helpful.
~/desktop/node_tutorial $ npm install express-generator -g
npm ERR! Darwin 14.4.0
npm ERR! argv "node" "/usr/local/bin/npm" "install" "express-generator" "-g"
npm ERR! node v0.12.7
npm ERR! npm v2.11.3
npm ERR! path /usr/local/lib/node_modules/express-generator
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! Error: EACCES, rmdir '/usr/local/lib/node_modules/express-generator'
npm ERR! at Error (native)
npm ERR! { [Error: EACCES, rmdir '/usr/local/lib/node_modules/express-generator']
npm ERR! errno: -13,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/express-generator' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! error rolling back Error: EACCES, rmdir '/usr/local/lib/node_modules/express-generator'
npm ERR! error rolling back at Error (native)
npm ERR! error rolling back { [Error: EACCES, rmdir '/usr/local/lib/node_modules/express-generator']
npm ERR! error rolling back errno: -13,
npm ERR! error rolling back code: 'EACCES',
npm ERR! error rolling back path: '/usr/local/lib/node_modules/express-generator' }
npm ERR! Please include the following file with any support request:
npm ERR! /Users/*****/Desktop/node_tutorial/npm-debug.log

Looks like it wants you to be an administrator:
...
Please try running this command again as root/Administrator
...
Try sudo npm install -g express-generator

how do you globally install a file as the root/administrator?

when I try "npm install -g jshint", I get the following readout.
user-MacBook-Pro:~ davidgoldberg$ npm install -g jshint
npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/jshint'
npm ERR! { [Error: EACCES, mkdir '/usr/local/lib/node_modules/jshint']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/jshint',
npm ERR! fstream_type: 'Directory',
npm ERR! fstream_path: '/usr/local/lib/node_modules/jshint',
npm ERR! fstream_class: 'DirWriter',
npm ERR! fstream_stack:
npm ERR! [ '/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23',
npm ERR! '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53',
npm ERR! 'Object.oncomplete (fs.js:107:15)' ] }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 13.3.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "jshint"
npm ERR! cwd /Users/davidgoldberg
npm ERR! node -v v0.10.32
npm ERR! npm -v 1.4.28
npm ERR! path /usr/local/lib/node_modules/jshint
npm ERR! fstream_path /usr/local/lib/node_modules/jshint
npm ERR! fstream_type Directory
npm ERR! fstream_class DirWriter
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/usr/local/lib/node_modules/jshint'
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /Users/davidgoldberg/npm-debug.log
npm ERR! not ok code 0
I'd love to get error sorted out. "npm install jshint" works fine, by the way. ultimately, I need help downloading jshint for use in "sublimelint-jshint" on sublime tex 3.

You've got to be root to install globally with npm, so try:
sudo npm -g install jshint

NPM no longer working

so I wasn't paying attention and ran this command-
npm install npm install jasmine-node -g
which caused this -
npm http GET https://registry.npmjs.org/install
npm http GET https://registry.npmjs.org/jasmine-node
npm http GET https://registry.npmjs.org/npm
npm http 200 https://registry.npmjs.org/install
npm http GET https://registry.npmjs.org/install/-/install-0.1.7.tgz
npm http 200 https://registry.npmjs.org/install/-/install-0.1.7.tgz
npm http 200 https://registry.npmjs.org/jasmine-node
npm http GET https://registry.npmjs.org/jasmine-node/-/jasmine-node-1.4.0.tgz
npm http 200 https://registry.npmjs.org/jasmine-node/-/jasmine-node-1.4.0.tgz
npm http 200 https://registry.npmjs.org/npm
npm http GET https://registry.npmjs.org/npm/-/npm-1.2.15.tgz
npm http 200 https://registry.npmjs.org/npm/-/npm-1.2.15.tgz
npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/install'
npm ERR! { [Error: EACCES, mkdir '/usr/local/lib/node_modules/install']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/install',
npm ERR! fstream_type: 'Directory',
npm ERR! fstream_path: '/usr/local/lib/node_modules/install',
npm ERR! fstream_class: 'DirWriter',
npm ERR! fstream_stack:
npm ERR! [ 'DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)',
npm ERR! '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53',
npm ERR! 'Object.oncomplete (fs.js:297:15)' ] }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 12.0.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "npm" "install" "jasmine-node" "-g"
npm ERR! cwd /Users/psanker/Google Drive/Coding/Javascript/WhatsGoingOn
npm ERR! node -v v0.8.17
npm ERR! npm -v 1.2.0
npm ERR! path /usr/local/lib/node_modules/install
npm ERR! fstream_path /usr/local/lib/node_modules/install
npm ERR! fstream_type Directory
npm ERR! fstream_class DirWriter
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/usr/local/lib/node_modules/install'
npm ERR! fstream_stack DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53
npm ERR! fstream_stack Object.oncomplete (fs.js:297:15)
npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/jasmine-node'
npm ERR! { [Error: EACCES, mkdir '/usr/local/lib/node_modules/jasmine-node']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/jasmine-node',
npm ERR! fstream_type: 'Directory',
npm ERR! fstream_path: '/usr/local/lib/node_modules/jasmine-node',
npm ERR! fstream_class: 'DirWriter',
npm ERR! fstream_stack:
npm ERR! [ 'DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)',
npm ERR! '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53',
npm ERR! 'Object.oncomplete (fs.js:297:15)' ] }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 12.0.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "npm" "install" "jasmine-node" "-g"
npm ERR! cwd /Users/psanker/Google Drive/Coding/Javascript/WhatsGoingOn
npm ERR! node -v v0.8.17
npm ERR! npm -v 1.2.0
npm ERR! path /usr/local/lib/node_modules/jasmine-node
npm ERR! fstream_path /usr/local/lib/node_modules/jasmine-node
npm ERR! fstream_type Directory
npm ERR! fstream_class DirWriter
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/usr/local/lib/node_modules/jasmine-node'
npm ERR! fstream_stack DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53
npm ERR! fstream_stack Object.oncomplete (fs.js:297:15)
npm ERR! error rolling back Error: EACCES, unlink '/usr/local/lib/node_modules/npm'
npm ERR! error rolling back npm#1.2.15 { [Error: EACCES, unlink '/usr/local/lib/node_modules/npm']
npm ERR! error rolling back errno: 3,
npm ERR! error rolling back code: 'EACCES',
npm ERR! error rolling back path: '/usr/local/lib/node_modules/npm' }
npm ERR! Error: EACCES, unlink '/usr/local/lib/node_modules/npm'
npm ERR! { [Error: EACCES, unlink '/usr/local/lib/node_modules/npm']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/npm' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 12.0.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "npm" "install" "jasmine-node" "-g"
npm ERR! cwd /Users/psanker/Google Drive/Coding/Javascript/WhatsGoingOn
npm ERR! node -v v0.8.17
npm ERR! npm -v 1.2.0
npm ERR! path /usr/local/lib/node_modules/npm
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, unlink '/usr/local/lib/node_modules/npm'
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /Users/psanker/Google Drive/Coding/Javascript/WhatsGoingOn/npm-debug.log
npm ERR! not ok code 0
Now when I try and run
npm install jasmine-node -g
I get
-bash: /usr/local/bin/npm: No such file or directory
What's going on?

When you run npm install -g somepackage, you may get an EACCES error asking you to run the command again as root/Administrator. It's a permissions issue.
It's easy to fix, open your terminal (Applications > Utilities > Terminal)
sudo chown -R $USER /usr/local
** I strongly recommend you to not use the package management with sudo (sudo npm -g install something), because you can get some issues later **
Reference: http://foohack.com/2010/08/intro-to-npm/
** Update **
The reason is because this can cause permissions problems with lots of other apps, so I'd suggest not doing this.
A better solution when you are installing globally:
sudo chown -R `whoami` ~/.npm

Tried it myself.
You will need to install npm again. If you use git, this is the easiest way:
git clone http://github.com/isaacs/npm.git
cd npm
sudo make install
Otherwise, there is an install script too:
curl http://npmjs.org/install.sh | sh
(possibly you will need to use sudo sh instead of sh).
Then install your module again:
sudo npm install jasmine-node -g
EDIT 23/01/2014:
Now npm comes with NodeJs itself, so just reinstall NodeJs.

Look at the error
Please try running this command again as root/Administrator.
You need to run this with sudo
$ sudo npm install jasmine-node -g

This worked for me (OSX). I had to run it in my user directory.
cd ~
curl -L http://npmjs.org/install.sh | sudo sh

I was able to get around the permissions issues by setting my packages to install locally with a one-line "$HOME/.npmrc" file:
prefix=${HOME}/.npm_packages