express@4.0.*

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$ sudo npm install -g express the installation goes fine. But when I try to create a project with express as $ express myProject I get an error saying

    : The program ‘express‘ is currently not installed. You can install it by typing: sudo apt-get install node-express

The new version of Express (4.0) does not itself have a bin folder. You have to install express-generator to get the setup functionality.

You are not doing anything wrong. Express has just changed the way it works. Have a look at this answer.

With Express 4, the application generator was removed and is now available as ‘express-generator.‘ So you need to npm install -g express-generator instead.

express@4.0.*

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原文地址：http://www.cnblogs.com/yiliweichinasoft/p/4052861.html